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Rosa AH, Stubbings WA, Akinrinade OE, Jeunon Gontijo ES, Harrad S. Neural network for evaluation of the impact of the UK COVID-19 national lockdown on atmospheric concentrations of PAHs and PBDEs. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122794. [PMID: 37926413 DOI: 10.1016/j.envpol.2023.122794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 10/19/2023] [Accepted: 10/22/2023] [Indexed: 11/07/2023]
Abstract
The impact of measures to restrict population mobility during the COVID-19 pandemic on atmospheric concentrations of polycyclic aromatic hydrocarbons (PAH) and brominated flame retardants (BFRs) is poorly understood. This study analyses the effects of meteorological parameters and mobility restrictions during the COVID-19 pandemic on concentrations of PAH and BFRs at the University of Birmingham in the UK utilising a neural network (self-organising maps, SOM). Air sampling was performed using Polyurethane Foam (PUF) disk passive samplers between October 2019 and January 2021. Data on concentrations of PAH and BFRs were analysed using SOM and Spearman's rank correlation. Data on meteorological parameters (air temperature, wind, and relative humidity) and mobility restrictions during the pandemic were included in the analysis. Decabromodiphenyl ether (BDE-209) was the most abundant polybrominated diphenyl ether (PBDE) (23-91% Σ7PBDEs) but was detected at lower absolute concentrations (4.2-35.0 pg m-3) than in previous investigations in Birmingham. Air samples were clustered in five groups based on SOM analysis and the effects of meteorology and pandemic-related restrictions on population mobility could be visualised. Concentrations of most PAH decreased during the early stages of the pandemic when mobility was most restricted. SOM analysis also helped to identify the important influence of wind speed on contaminant concentrations, contributing to reduce the concentration of all analysed pollutants. In contrast, concentrations of most PBDEs remained similar or increased during the first COVID-19 lockdown which was attributed to their primarily indoor sources that were either unaffected or increased during lockdown.
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Affiliation(s)
- André Henrique Rosa
- Institute of Science and Technology, São Paulo State University (UNESP), Av. Três de Março, 511, Alto da Boa Vista, 18087-180, Sorocaba, SP, Brazil; School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
| | - William A Stubbings
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
| | - Olumide Emmanuel Akinrinade
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK; Department of Chemistry, University of Lagos, Lagos, Nigeria
| | - Erik Sartori Jeunon Gontijo
- Institute of Science and Technology, São Paulo State University (UNESP), Av. Três de Março, 511, Alto da Boa Vista, 18087-180, Sorocaba, SP, Brazil; KISTERS AG, Business Unit HydroMet, Schoemperlenstr.12a, 76185, Karlsruhe, Germany
| | - Stuart Harrad
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK
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Peixoto C, Pereira MDC, Morais S, Slezakova K. Assessment of indoor air quality in health clubs: insights into (ultra)fine and coarse particles and gaseous pollutants. Front Public Health 2023; 11:1310215. [PMID: 38089025 PMCID: PMC10715262 DOI: 10.3389/fpubh.2023.1310215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/10/2023] [Indexed: 12/18/2023] Open
Abstract
Introduction Exercising on regular basis provides countless health benefits. To ensure the health, well-being and performance of athletes, optimal indoor air quality, regular maintenance and ventilation in sport facilities are essential. Methods This study assessed the levels of particulate, down to the ultrafine range (PM10, PM2.5, and particle number concentration in size range of 20-1,000 nm, i.e., - PNC20-1000 nm), gaseous pollutants (total volatile organic compounds - TVOCs, CO2, and O3) and comfort parameters (temperature - T, relative humidity - RH) in different functional spaces of health clubs (n = 8), under specific occupancy and ventilation restrictions. Results and Discussion In all HCs human occupancy resulted in elevated particles (up to 2-3 times than those previously reported), considering mass concentrations (PM10: 1.9-988.5 μg/m3 PM2.5: 1.6-479.3 μg/m3) and number (PNC 1.23 × 103 - 9.14 × 104 #/cm3). Coarse and fine PM indicated a common origin (rs = 0.888-0.909), while PNC showed low-moderate associations with particle mass (rs = 0.264-0.629). In addition, up to twice-higher PM and PNC were detected in cardiofitness & bodybuilding (C&B) areas as these spaces were the most frequented, reinforcing the impacts of occupational activities. In all HCs, TVOCs (0.01-39.67 mg/m3) highly exceeded the existent protection thresholds (1.6-8.9 times) due to the frequent use of cleaning products and disinfectants (2-28 times higher than in previous works). On contrary to PM and PNC, TVOCs were higher (1.1-4.2 times) in studios than in C&B areas, due to the limited ventilations combined with the smaller room areas/volumes. The occupancy restrictions also led to reduced CO2 (122-6,914 mg/m3) than previously observed, with the lowest values in HCs with natural airing. Finally, the specific recommendations for RH and T in sport facilities were largely unmet thus emphasizing the need of proper ventilation procedures in these spaces.
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Affiliation(s)
- Cátia Peixoto
- REQUIMTE–LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, Porto, Portugal
- LEPABE-ALiCE, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto, Portugal
| | - Maria do Carmo Pereira
- LEPABE-ALiCE, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto, Portugal
| | - Simone Morais
- REQUIMTE–LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida, Porto, Portugal
| | - Klara Slezakova
- LEPABE-ALiCE, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, Porto, Portugal
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Faggiano A, Pironti C, Motta O, Miele Y, Fiorentino A, Marchettini N, Ricciardi M, Proto A. Insight on the deterioration of cultural objects: a multi-analytical approach to characterize degradation products of lead weights from a Steinway & sons piano. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:104633-104639. [PMID: 37707725 PMCID: PMC10567956 DOI: 10.1007/s11356-023-29790-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 09/05/2023] [Indexed: 09/15/2023]
Abstract
The identification of the degradation products in objects of cultural significance, including musical instruments (e.g., a piano), is a key issue for the preservation and valorisation processes of cultural heritage. The aim of this study is to characterize the degradation products of lead weights from an important Steinway & sons piano using a multi-analytical approach that includes ionic chromatography (IC), X-ray diffraction (XRD) and Fourier transform-infrared (FTIR) spectroscopy analyses. These techniques allowed us to identify hydrocerussite as the main degradation product on the superficial layer of lead weights, followed by lead acetate and formate. Moreover, accelerated corrosion experiments in closed environments were performed under acetic and formic acid atmospheres to evaluate the development of lead acetate and formate over time. Exposure of lead weights to formic and acetic acid vapours leads to the prevalent formation of basic lead formate, which promotes the formation of hydrocerussite. These results can help to limit the degradation of these piano components and consequently preserve the sound of the piano itself.
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Affiliation(s)
- Antonio Faggiano
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, (SA), Salerno, Italy
- Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), 50121, Firenze, Italy
| | - Concetta Pironti
- Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), 50121, Firenze, Italy
- Department of Medicine Surgery and Dentistry, University of Salerno, via S. Allende, 84081, Baronissi, (SA), Salerno, Italy
| | - Oriana Motta
- Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), 50121, Firenze, Italy
- Department of Medicine Surgery and Dentistry, University of Salerno, via S. Allende, 84081, Baronissi, (SA), Salerno, Italy
| | - Ylenia Miele
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, (SA), Salerno, Italy
| | - Antonino Fiorentino
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, (SA), Salerno, Italy
- Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), 50121, Firenze, Italy
| | - Nadia Marchettini
- Department of Earth, Environmental and Physical Sciences, University of Siena, Pian dei Mantellini 44, 53100, Siena, Italy
| | - Maria Ricciardi
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, (SA), Salerno, Italy.
- Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), 50121, Firenze, Italy.
| | - Antonio Proto
- Department of Chemistry and Biology, University of Salerno, via Giovanni Paolo II 132, 84084, Fisciano, (SA), Salerno, Italy
- Consorzio Interuniversitario per la Scienza e la Tecnologia dei Materiali (INSTM), 50121, Firenze, Italy
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Impact of Environmental Exposure on the Service Life of Façade Claddings—A Statistical Analysis. BUILDINGS 2021. [DOI: 10.3390/buildings11120615] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Façade claddings, as the outer protection layer of the building’s envelope, are directly exposed to environmental degradation agents. The façades’ orientation and their distance from the sea, among other location and protection-related factors, influence their vulnerability to climate loads, in particular wind and air humidity. These loads, as well as exposure to air pollution, affect the degradation process of claddings and the durability of façades. Therefore, studying the impact of the environmental exposure conditions on the service life of different external claddings provides useful information on their performance over time, which can support (i) decision-makers in the selection of the best façade cladding solutions and (ii) further research on the impact of climate change on building components. This study covers six types of cladding: rendered façades (R), natural stone cladding (NSC), ceramic tiling system (CTS), painted surfaces (PS), external thermal insulation composite systems (ETICS), and architectural concrete façades (ACF). Three hundred façades located in Portugal are analysed according to three main groups of variables, which characterize (i) the façades, (ii) their degradation condition, and (iii) the environmental deterioration loads and context. The statistical analysis results reveal that the environmental variables affect the cladding degradation process. South-oriented façades present lower degradation conditions than façades facing north. The distance from the sea and high exposure to pollutants add to the degradation conditions, reducing the expected service life of façades. The results reveal that claddings can be organized according to two main groups: the most durable (CTS, NSC, and ACF) and the least durable (R, PS, and ETICS) systems. This study enables a comprehensive analysis of the data, useful to draw conclusions about the influence of environmental exposure conditions on the degradation and service life of façade claddings.
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Ambade B, Kumar A, Kumar A, Sahu LK. Temporal variability of atmospheric particulate-bound polycyclic aromatic hydrocarbons (PAHs) over central east India: sources and carcinogenic risk assessment. AIR QUALITY, ATMOSPHERE, & HEALTH 2021; 15:115-130. [PMID: 34539931 PMCID: PMC8437740 DOI: 10.1007/s11869-021-01089-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 09/02/2021] [Indexed: 05/26/2023]
Abstract
Atmospheric polycyclic aromatic hydrocarbons (PAHs) are of significant interest owing to their high potential health effects, including mutagenicity and carcinogenicity. We report 16 PAHs measured in ambient PM2.5 from June 2018 to May 2019 over three different sites located in central east India. The annual average PM2.5 mass concentrations of 97.3 ± 18.1 µg m-3, 101.9 ± 19.4 µg m-3, and 93.9 ± 20.3 µg m-3 were measured at RCI (Ranchi), GHY (Gamharia), and BKR (Bokaro), respectively. The mass concentrations at all sampling sites are relatively higher than the annual average concentration of the National Ambient Air Quality Standard. Total annual PAH concentrations (ng m-3) are found to be comparable at BKR (797.9 ± 39.1 ng m-3) and RCI (887.7 ± 38.8 ng m-3); however, a relatively higher average is observed over GHY (1015.1 ± 42.7 ng m-3). Using PAH diagnostic ratios and principal component analysis (PCA), their major sources were attributed to coal and wood combustion as well as vehicular emission of diesel and gasoline at all sampling sites. Significant seasonal variability is observed for PAH composition and mainly attributed to change in emission sources. Summer and winter compositions were found to be impacted by the transport from Indo-Gangetic Plains (IGP). However, ambient level PAHs during the post-monsoon season were impacted by mixed sources from Indo-Gangetic Plain and eastern India. These observations are supported by the analysis of back-trajectory and fire count data. The excess life time cancer risk (ELCR) values estimated for the study sites are within acceptable limits suggesting acceptable risk levels at BKR, GHY, and RCI. This study highlights the significance of ambient aerosol concentration for health risks in the pre-COVID-19 scenario.
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Affiliation(s)
- Balram Ambade
- Department of Chemistry, National Institute of Technology Jamshedpur, Jharkhand, 831014 India
| | - Amit Kumar
- Department of Chemistry, National Institute of Technology Jamshedpur, Jharkhand, 831014 India
| | - Ashwini Kumar
- Geological Oceanography Division, CSIR-National Institute of Oceanography, Dona Paula, Goa, 403 004 India
| | - Lokesh K. Sahu
- Physical Research Laboratory, Space and Atmospheric Sciences Division, Ahmedabad, 380009 India
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Wilhelm K, Longman J, Orr SA, Viles H. Stone-built heritage as a proxy archive for long-term historical air quality: A study of weathering crusts on three generations of stone sculptures on Broad Street, Oxford. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143916. [PMID: 33338691 DOI: 10.1016/j.scitotenv.2020.143916] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/19/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Black crusts on historic buildings are mainly known for their aesthetic and deteriorative impacts, yet they also can advance air pollution research. Past air pollutants accumulate in distinct layers of weathering crusts. Recent studies have used these crusts to reconstruct pollution to improve our understanding of its effects on stone-built heritage. However, the majority of the studies provide only coarse resolution reconstruction of pollution, able to distinguish between 'inner = old' and 'outer = modern' crust layers. In contrast, very few studies have linked distinct periods of exposure to pollution variations in the composition of these crusts. Here we address this research gap by developing a finer-scale resolution pollution record. Our study explored the unique configuration of limestone sculptures in central Oxford, which have been exposed over the last 350 years to three different periods of atmospheric pollution; the early Industrial Revolution, the Victorian period and the 20th century. When the first two generations of sculptures were moved to less polluted areas, their 'pollution clocks' were stopped. Here we discuss the potential of investigating the 'pollution clock' recorded in the geochemical makeup of each sculpture generation's weathering crust layers. We found the analysed crusts record clear changes related to the evolution of modes of transport and industrial and technological development in Oxford. Higher levels of Arsenic (As), Selenium (Se) are linked to pollution from coal burning during Victorian times and Lead (Pb) indicated leaded petrol use in modern times. Our work shows that stone-built heritage with a known history of air pollution exposure allows improving the pollution reconstruction resolution of these weathering crusts. The results provide the basis for calibrating long-term geochemical archives. This approach may be used to reconstruct past air quality and has the potential to inform stone weathering research and conservation, in addition to improving the reconstruction of historical pollution.
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Affiliation(s)
- Katrin Wilhelm
- Oxford Resilient Buildings and Landscapes Laboratory (OxRBL), School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK.
| | - Jack Longman
- Marine Isotope Geochemistry, Institute for Chemistry and Biology of the Marine Environment (ICBM), University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg, Germany.
| | - Scott Allan Orr
- Bartlett School Environment, Energy and Resources, Faculty of the Built Environment, University College London, UK.
| | - Heather Viles
- Oxford Resilient Buildings and Landscapes Laboratory (OxRBL), School of Geography and the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK.
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7
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Vari HK, Roslund MI, Oikarinen S, Nurminen N, Puhakka R, Parajuli A, Grönroos M, Siter N, Laitinen OH, Hyöty H, Rajaniemi J, Rantalainen AL, Sinkkonen A. Associations between land cover categories, gaseous PAH levels in ambient air and endocrine signaling predicted from gut bacterial metagenome of the elderly. CHEMOSPHERE 2021; 265:128965. [PMID: 33248729 DOI: 10.1016/j.chemosphere.2020.128965] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 11/05/2020] [Accepted: 11/10/2020] [Indexed: 06/12/2023]
Abstract
There is evidence that polycyclic aromatic hydrocarbons (PAHs) and human gut microbiota are associated with the modulation of endocrine signaling pathways. Independently, studies have found associations between air pollution, land cover and commensal microbiota. We are the first to estimate the interaction between land cover categories associated with air pollution or purification, PAH levels and endocrine signaling predicted from gut metagenome among urban and rural populations. The study participants were elderly people (65-79 years); 30 lived in rural and 32 in urban areas. Semi-Permeable Membrane devices were utilized to measure air PAH concentrations as they simulate the process of bioconcentration in the fatty tissues. Land cover categories were estimated using CORINE database and geographic information system. Functional orthologues for peroxisome proliferator-activated receptor (PPAR) pathway in endocrine system were analyzed from gut bacterial metagenome with Kyoto Encyclopaedia of Genes and Genomes. High coverage of broad-leaved and mixed forests around the homes were associated with decreased PAH levels in ambient air, while gut functional orthologues for PPAR pathway increased along with these forest types. The difference between urban and rural PAH concentrations was not notable. However, some rural measurements were higher than the urban average, which was due to the use of heavy equipment on active farms. The provision of air purification by forests might be an important determining factor in the context of endocrine disruption potential of PAHs. Particularly broad-leaved forests around homes may reduce PAH levels in ambient air and balance pollution-induced disturbances within commensal gut microbiota.
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Affiliation(s)
- Heli K Vari
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti, Finland
| | - Marja I Roslund
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti, Finland
| | - Sami Oikarinen
- Tampere University, Faculty of Medicine and Health Technology, Arvo Ylpönkatu 34, Tampere, Finland
| | - Noora Nurminen
- Tampere University, Faculty of Medicine and Health Technology, Arvo Ylpönkatu 34, Tampere, Finland
| | - Riikka Puhakka
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti, Finland
| | - Anirudra Parajuli
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti, Finland
| | - Mira Grönroos
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti, Finland
| | - Nathan Siter
- Tampere University, Faculty of Built Environment, Korkeakoulunkatu 5, Tampere, Finland
| | - Olli H Laitinen
- Tampere University, Faculty of Medicine and Health Technology, Arvo Ylpönkatu 34, Tampere, Finland
| | - Heikki Hyöty
- Tampere University, Faculty of Medicine and Health Technology, Arvo Ylpönkatu 34, Tampere, Finland
| | - Juho Rajaniemi
- Tampere University, Faculty of Built Environment, Korkeakoulunkatu 5, Tampere, Finland
| | - Anna-Lea Rantalainen
- Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Niemenkatu 73, Lahti, Finland
| | - Aki Sinkkonen
- Natural Resources Institute Finland, Horticulture Technologies, Itäinen Pitkäkatu 4, Turku, Finland.
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Iakovides M, Iakovides G, Stephanou EG. Atmospheric particle-bound polycyclic aromatic hydrocarbons, n-alkanes, hopanes, steranes and trace metals: PM 2.5 source identification, individual and cumulative multi-pathway lifetime cancer risk assessment in the urban environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 752:141834. [PMID: 33207492 DOI: 10.1016/j.scitotenv.2020.141834] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/18/2020] [Accepted: 08/19/2020] [Indexed: 06/11/2023]
Abstract
The occurrence of atmospheric fine particles (PM2.5)-associated polycyclic aromatic hydrocarbons (PAHs), trace metals and organic molecular markers was investigated by conducting an intensive sampling campaign at the Eastern Mediterranean urban area of Nicosia (Cyprus). Sixty-two 24-hr PM2.5 samples were collected and analyzed for fifty parent and alkylated PAHs, twenty-five long chain n-alkanes, seventeen hopanes and twelve steranes used for source apportionment. The same number and kind of samples were analyzed to determine twenty-eight trace metals. Emphasis was given to investigate the air levels of the scarcely monitored although highly carcinogenic PAHs such as dibenzopyrenes, dibenzoanthracenes, 7H-benzo[c]fluorene and 5-methyl-chrysene, not included in the USEPA's sixteen PAH priority list (USEPA-16). UNMIX receptor model was applied to apportion the sources of atmospheric emissions of the determined organic compounds and trace metals and evaluate their daily contributions to the corresponding PM2.5 associated concentrations. For comparison purposes, principal component analysis with multiple linear regression (PCA/MLR) was also applied and its results are reported. The UNMIX receptor model, compared to PCA/MLR, offered a more precise source profile and more reliable daily mass source distributions by eliminating negative contributions. The individual and cumulative multi-pathway lifetime cancer risk (posed via inhalation, ingestion and dermal contact) by exposure to PM2.5-associated USEPA-16 listed and non-listed PAHs and selected airborne trace metals (As, Cd, Co, Ni, and Pb) were assessed. To estimate the contribution of each emission source to the total cancer risk, multiple linear regression analysis was performed, using as independent variables the daily source mass contributions and as dependent variables the respective cancer risk units. The estimated total cumulative cancer risk comprising all toxic PAHs, besides those included in the priority list, and metals was higher than the USEPA's threshold by a factor of eight, denoting a potential risk for long-term exposure of a population in the urban environment.
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Affiliation(s)
- Minas Iakovides
- The Cyprus Institute, Konstantinou Kavafi 20, 2121 Aglantzia, Nicosia, Cyprus
| | - Giannis Iakovides
- Department of Mathematics and Applied Mathematics, University of Crete, Voutes Campus, 70013 Heraklion, Greece
| | - Euripides G Stephanou
- The Cyprus Institute, Konstantinou Kavafi 20, 2121 Aglantzia, Nicosia, Cyprus; Department of Chemistry, University of Crete, Voutes Campus, 70013 Heraklion, Greece.
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9
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Freire SM, Relvas H, Lopes M. Impact of traffic emissions on air quality in Cabo Verde. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:726. [PMID: 33098502 DOI: 10.1007/s10661-020-08690-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 10/15/2020] [Indexed: 06/11/2023]
Abstract
Air quality degradation due to road traffic emissions is one of the topics of major interest for the scientific community and urban planners worldwide. Cabo Verde does not have regulations for traffic emission control or air quality guidelines, although the number of road vehicles has grown steadily over the past decade. Moreover, studies focusing on the impact of road transport on air quality in this archipelago are sparse. In this study, we present a first detailed air pollutant inventory of road traffic emissions through a bottom-up methodology, along with snapshots of the state of air quality on the islands of Santiago, São Vicente, and Sal. For the year 2017, emission estimates for the main island (Santiago) are 654 tons of CO, 35 tons of PM10, 562 tons of NOx, and 84 tons of NMVOCs. The air quality assessment was carried out using the TAPM model for a period of 6 months from January to July 2017. The results showed that the mean concentration values for Sao Vicente, Sal, and Santiago Islands ranged between 2.0 and 18 μg m-3 for NO2 and 3.8 and 5.6 μg m-3 for PM10. NO2 concentrations show an increasing trend from January to July in Santiago and Sal, and no clear trend in São Vicente Island. The simulated PM10 concentrations showed values in the same range over the year, even though they appeared slightly higher in July than in January. It was observed that both NO2 and PM10 average concentrations have been consistently above healthful levels, according to air quality guidelines fixed by the WHO.
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Affiliation(s)
- Sandra M Freire
- Faculty of Science and Technology, University of Cabo Verde, Praia, 279, Cabo Verde
| | - Helder Relvas
- CESAM & Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Myriam Lopes
- CESAM & Department of Environment and Planning, University of Aveiro, 3810-193, Aveiro, Portugal
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Madureira J, Slezakova K, Costa C, Pereira MC, Teixeira JP. Assessment of indoor air exposure among newborns and their mothers: Levels and sources of PM 10, PM 2.5 and ultrafine particles at 65 home environments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 264:114746. [PMID: 32417580 DOI: 10.1016/j.envpol.2020.114746] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/11/2020] [Accepted: 05/05/2020] [Indexed: 06/11/2023]
Abstract
Significant efforts have been directed towards addressing the adverse health effects of atmospheric particles, emphasizing the relevance of indoor exposure. Homes represent an indoor environment where human spend the majority of their time. Thus, the objective of this work was to concurrently assess different matrix of indoor particles considering both mass (PM10, PM2.5) and number (N20-1000) concentrations in indoor and outdoor air of homes (n = 65). Real-time measurements (PM10, PM2.5, UFP) were conducted simultaneously during 48 h in dwellings situated in Oporto, Portugal. In 75% of homes, indoor PM2.5 (mean = 53 μg m-3) exceeded limit of 25 μg m-3, for PM10 (mean = 57 μg m-3) 41% of homes demonstrated average levels higher than 50 μg m-3, thus indicating potential risks. Indoor PM10 was mostly (82-99%) composed of PM2.5, both PM were highly correlated (|rs|>0.9655), thus suggesting the similar origin. Indoor PM originated from infiltrations of outdoor emissions; ∼70% of homes exhibited indoor to outdoor (I/O) ratio < 1. On the contrary, UFP indoors (mean = 13.3 × 103 # cm-3) were higher than outdoors (mean = 10.0 × 103 # cm-3). Indoor UFP spatially varied as follows: kitchens > living rooms > bedrooms. UFP indoors were poorly correlated (|rs| = 0.456) with outdoor concentrations, I/O ratios showed that indoor UFP predominantly originated from indoor emission sources (combustions). Therefore, in order to reduce exposure to UFP and protect public health, the primary concerns should be focused on controlling emissions from indoor sources.
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Affiliation(s)
- Joana Madureira
- Environmental Health Department, National Institute of Health, Rua Alexandre Herculano 321, 4000-055, Porto, Portugal; EPIUnit-Instituto de Saúde Pública, Universidade Do Porto, Rua Das Taipas 135, 4050-600, Porto, Portugal
| | - Klara Slezakova
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade Do Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal.
| | - Carla Costa
- Environmental Health Department, National Institute of Health, Rua Alexandre Herculano 321, 4000-055, Porto, Portugal; EPIUnit-Instituto de Saúde Pública, Universidade Do Porto, Rua Das Taipas 135, 4050-600, Porto, Portugal
| | - Maria Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade Do Porto, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal
| | - João Paulo Teixeira
- Environmental Health Department, National Institute of Health, Rua Alexandre Herculano 321, 4000-055, Porto, Portugal; EPIUnit-Instituto de Saúde Pública, Universidade Do Porto, Rua Das Taipas 135, 4050-600, Porto, Portugal
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Slezakova K, Pereira MC, Morais S. Ultrafine particles: Levels in ambient air during outdoor sport activities. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113648. [PMID: 31806467 DOI: 10.1016/j.envpol.2019.113648] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 10/28/2019] [Accepted: 11/18/2019] [Indexed: 05/06/2023]
Abstract
Conducting aerobic activity on regular basis is recognised as one of the steps to maintain healthier lifestyle. The positive outcomes though can be outweighed if conducted in polluted atmosphere. Furthermore, the specific inhalation during exercising, which results in bypass of nasal filtration systems and deeper penetration into the respiratory system, might result in higher risks especially to pollutants such as ultrafine particles (UFP), which aerodynamic particle diameter are <100 nm. Thus, this work aims to evaluate UFP levels at sites used for conducting physical sport activities outdoors and to estimate the respective inhalation doses considering various scenarios and different physical activities. Monitoring of UFP was conducted during three weeks (May-June 2015) at four different sites (S1-S4) regularly used to conduct physical exercising. The results showed that UFP highly varied (medians 5.1-20.0 × 103 # cm-3) across the four sites, with the highest UFP obtained when exercising next to trafficked streets whereas S3 and S4 (a garden and city park) exhibited 2-4 times lower UFP. In view of the obtained UFP concentrations, the estimated inhalation doses ranged 1.73 × 108-3.81 × 108 # kg-1 when conducting moderately intense sport activities and 1.93 × 108-5.95 × 108 # kg-1 for highly intense ones. Highly intense activities (i.e. running) led to twice higher UFP exposure; children and youths (5-17 yrs old) experienced 203-267% higher doses. Considering the age- and gender- differences, estimated UFP doses of males were 1.1-2.8 times higher than of females. Finally, UFP inhalation doses estimated for walking (commuting to work and/or schools) were 1.6-7.5 times lower than when conducting sport activities. Thus to protect public health and to promote healthy and physically active lifestyle, strategies to minimize the negative impacts of air pollution should be developed and implemented.
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Affiliation(s)
- Klara Slezakova
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Maria Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Simone Morais
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
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12
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Lamhasni T, El-Marjaoui H, El Bakkali A, Lyazidi SA, Haddad M, Ben-Ncer A, Benyaich F, Bonazza A, Tahri M. Air pollution impact on architectural heritage of Morocco: Combination of synchronous fluorescence and ATR-FTIR spectroscopies for the analyses of black crusts deposits. CHEMOSPHERE 2019; 225:517-523. [PMID: 30897475 DOI: 10.1016/j.chemosphere.2019.03.109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/14/2019] [Accepted: 03/15/2019] [Indexed: 06/09/2023]
Abstract
The work is focusing on air pollution impacts on historical limestone buildings located in urban areas in Morocco. Black crusts sampled on the façades of two ancient limestone monuments, dating back to the 12th and 20th centuries edified in the cities of Salé and Casablanca, have been analyzed by means of ATR-FTIR and synchronous fluorescence spectroscopies. Infrared analyses revealed degradation products, mainly gypsum due to calcite sulphation under wetness and SO2 rich oil fired soot, and oxalates due to ancient biological weathering. Synchronous fluorescence permitted the identification of the most hazardous PAHs along with other non-identified fluorescent organics; this technique appeared efficient and suitable for the analysis of fluorescent pollutants entrapped in black crusts. Such results keeping track of air pollution causing disfigurement of architectural heritage must alarm both cultural heritage and environmental decision makers.
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Affiliation(s)
- Taibi Lamhasni
- Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco
| | - Houssam El-Marjaoui
- Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco
| | - Abdelmajid El Bakkali
- Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco
| | - Saadia Ait Lyazidi
- Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco.
| | - Mustapha Haddad
- Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco
| | - Abdelouahed Ben-Ncer
- Institut National des Sciences de l'Archéologie et du Patrimoine (INSAP), BP 6828, Madinat al Irfane, avenue Allal El Fassi, Angle rues 5 et 7, Rabat-Instituts, Morocco
| | - Fouad Benyaich
- Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco
| | - Alessandra Bonazza
- Institute of Atmospheric Sciences and Climate, ISAC-CNR, via Gobetti 101, 40129 Bologna, Italy
| | - Mounia Tahri
- Laboratoire d'Analyse par Activation Neutronique, Centre National de l'Energie, des Sciences et des Techniques Nucléaires (CNESTEN), Rabat, Morocco
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El-Sharkawy MF, Dahlawi SM. Study the effectiveness of different actions and policies in improving urban air quality: Dammam City as a case study. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2019. [DOI: 10.1080/16583655.2019.1599176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mahmoud Fathy El-Sharkawy
- Department of Environmental Health, College of Public Health, Imam Abdul Rahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia
| | - Saad Mohamed Dahlawi
- Department of Environmental Health, College of Public Health, Imam Abdul Rahman Bin Faisal University, Dammam, Kingdom of Saudi Arabia
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Slezakova K, de Oliveira Fernandes E, Pereira MDC. Assessment of ultrafine particles in primary schools: Emphasis on different indoor microenvironments. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 246:885-895. [PMID: 31159138 DOI: 10.1016/j.envpol.2018.12.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/21/2018] [Accepted: 12/22/2018] [Indexed: 05/07/2023]
Abstract
Due to the negative health impacts, significant efforts have been directed towards investigating ultrafine particle (UFP) exposure in various indoor environments. As children spend approximately one third of their time in schools, educatory environments deserve particular attention; however, majority of past research has focused on UFP assessment in classrooms. Thus, this work aims to expand the characterization of UFP in primary schools by considering different indoor and outdoor school microenvironments and estimating inhalation doses for the respective students (6-11yrs old). Real-time UFP measurements were daily conducted (9:00-17:30) in 20 primary schools in Oporto (January-April 2014; October-February 2015) in classrooms, canteens, gyms, libraries, and concurrently outdoors. Overall, UFP concentrations showed large temporal and spatial variations. For classrooms (n = 73), median UFP (1.56 × 103-16.8 × 103 # cm-3) were lower than the corresponding levels in ambient air of schools (1.79 × 103-24.1 × 103 # cm-3). Outdoor emissions contributed to indoor UFP (indoor-to-outdoor ratios I/O of 0.0.30-0.85), but ventilation, room characteristics and its occupancy were identified as important parameters contributing to overall indoor UFP levels. Considering specific indoor school microenvironments, canteens were the microenvironment with the highest UFP levels (5.47 × 103-36.4 × 103 # cm-3), cooking conducted directly on school grounds resulted in significantly elevated UFP in the respective classrooms (p < 0.05); the lowest UFP were found in libraries (4.45 × 103-8.50 × 103 # cm-3) mostly due to the limited occupancies. Although students spend majority of their school time in classrooms (66-71%), classroom exposure was not consistently the predominant contributor to school total UFP inhalation dose (29-75%). Outdoor exposure contributed 23-70% of school dose (depending on UFP levels in ambient levels and/or conducted activities) whereas short periods of lunch break accounted for 8-40%. Therefore, when evaluating UFP exposure in educatory settings other microenvironments beyond classrooms should be an integral part of the study.
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Affiliation(s)
- Klara Slezakova
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465, Porto, Portugal
| | | | - Maria do Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465, Porto, Portugal.
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Zhang Y, Zheng H, Zhang L, Zhang Z, Xing X, Qi S. Fine particle-bound polycyclic aromatic hydrocarbons (PAHs) at an urban site of Wuhan, central China: Characteristics, potential sources and cancer risks apportionment. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 246:319-327. [PMID: 30557806 DOI: 10.1016/j.envpol.2018.11.111] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 11/15/2018] [Accepted: 11/30/2018] [Indexed: 05/17/2023]
Abstract
Levels, compositions, sources, and cancer risks of fine particle (PM2.5)-bound PAHs were investigated at an urban site of Wuhan, Central China. Totally 115 PM2.5 samples collected during four seasons from 2014 to 2015 were analyzed for 16 USEPA priority PAHs. The annual average of PM2.5 and total PAHs were 106 ± 41.7 μg m-3 and 25.1 ± 19.4 ng m-3, respectively. The seasonal levels of PM2.5 and PAHs varied in a similar trend, with the highest concentrations in winter and the lowest in summer. PM2.5-bound PAHs under different pollution level was discussed and the highest average PAH levels were found at a moderate (115-150 μg m-3) air quality level. Three sources including coal combustion and biomass burning, petrogenic source, and vehicle emissions were extracted and quantified by the positive matrix factorization (PMF) model, accounting for 22.7 ± 21.3%, 34.4 ± 29.0% and 42.9 ± 31.3% of the total PAHs, respectively. The potential source contribution function (PSCF) and the concentration-weighted trajectory (CWT) were combined to explore the geographic origins of PAHs. The spatial distributions of coal combustion and biomass burning, petrogenic source, and vehicle emissions were well correlated with medium molecular weight (MMW), low molecular weight (LMW) and high molecular weight (HMW) PAHs, respectively. Results of PSCF and CWT indicated that the long-distance transport form north of Wuhan as far as northern and eastern of China was higher than that from the southern China while the contribution of local areas was higher than those from the long-range transport. The overall lifetime lung cancer risk (LLCR) via inhalation exposure to PM2.5-bound PAHs was estimated as 3.03 × 10-4, with vehicle emissions contributed 57.1% (1.6 × 10-4) to the total risk on average, followed by coal combustion and biomass burning (31.0%, 9.6 × 10-5), and petrogenic source (11.9%, 3.6 × 10-5).
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Affiliation(s)
- Yuan Zhang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China
| | - Huang Zheng
- Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China; Department of Environmental Science and Engineering, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
| | - Li Zhang
- Zhanjiang Environmental Protection Monitoring Station, Zhanjiang, 524002, China
| | - Zezhou Zhang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China
| | - Xinli Xing
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; Department of Environmental Science and Engineering, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China.
| | - Shihua Qi
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan, 430074, China; Department of Environmental Science and Engineering, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, China
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Gas-phase reaction of benzo[a]anthracene with hydroxyl radical in the atmosphere: products, oxidation mechanism, and kinetics. J Mol Model 2018; 24:320. [DOI: 10.1007/s00894-018-3862-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 10/05/2018] [Indexed: 10/28/2022]
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Slezakova K, Peixoto C, Pereira MDC, Morais S. Indoor air quality in health clubs: Impact of occupancy and type of performed activities on exposure levels. JOURNAL OF HAZARDOUS MATERIALS 2018; 359:56-66. [PMID: 30014915 DOI: 10.1016/j.jhazmat.2018.07.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 07/02/2018] [Accepted: 07/03/2018] [Indexed: 06/08/2023]
Abstract
Associations between indoor air quality (IAQ) and health in sport practise environments are not well understood due to limited knowledge of magnitude of inhaled pollutants. Thus, this study assessed IAQ in four health clubs (HC1-HC4) and estimated inhaled doses during different types of activities. Gaseous (TVOCs, CO, O3, CO2) and particulate pollutants (PM1, PM4) were continuously collected during 40 days. IAQ was influenced both by human occupancy and the intensity of the performed exercises. Levels of all pollutants were higher when clubs were occupied (p < 0.05) than for vacant periods, with higher medians in main workout areas rather than in spaces/studios for group activities. In all spaces, TVOCs highly exceeded legislative limit (600 μg/m3), even when unoccupied, indicating possible risks for the respective occupants. CO2 levels were well correlated with relative humidity (rs 0.534-0.625) and occupancy due to human exhalation and perspiration during exercising. Clubs with natural ventilations exhibited twice higher PM, with PM1 accounting for 93-96% of PM4; both PM were highly correlated (rs 0.936-0.995) and originated from the same sources. Finally, cardio classes resulted in higher inhalation doses than other types of exercising (1.7-2.6).
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Affiliation(s)
- Klara Slezakova
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal; LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Cátia Peixoto
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
| | - Maria do Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
| | - Simone Morais
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
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Liu R, Zhang Z, Shen J, Wang Z. Analysis of metal content and vertical stratification of epiphytic mosses along a Karst Mountain highway. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:29605-29613. [PMID: 30141167 DOI: 10.1007/s11356-018-2883-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 07/31/2018] [Indexed: 06/08/2023]
Abstract
Road-based transport emissions are a major source of atmospheric metal pollution. However, there have been few studies on emissions from road traffic in mountainous areas. In this study, epiphytic mosses from trees at different elevations of a highway, a typical road with extraordinary elevation change in a mountainous area of karst in Guizhou, China, were analyzed for metal content as well as the spatial distribution pattern of metals. Mosses were sampled from three sections of highway at different elevations, from 1292-1357, 1394-1441, to 1481-1548 m. Principal component analysis and heat-map clustering were used to identify the principal factors affecting metal deposition. The results show that the metals of mosses from different elevations were divided into four factors. Group 1 which included Ni, Fe, Mg, Ba, and Al was attributed to a dominantly geogenic source. Group 2 included Zn, Cu, Mn, and Cr, from vehicle-related materials including tires and brakes. Group 3, Cd, can be attributed to high Cd background levels from local origins and traffic emissions, particularly tire wear. Group 4, Pb, is associated with brake wear and historical deposition. The epiphytic moss widely distributed in the study area, Ectropothecium aneitense Broth. & Watts, was used to analyze the spatial distribution pattern of the metals. Metal content gradually decreased with increase in elevation. Levels of Ni, Fe, Mn, Ba, and Cd were all significantly correlated with elevation (p < 0.05), simultaneously affected by terrain and vertically stratified. We highlighted the vertical distribution characteristics of metal in epiphytic mosses in this study, which could improve moss application for ecological monitoring due to road-based transport emissions with elevation changes.
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Affiliation(s)
- Run Liu
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550000, China
- State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang, 550000, China
| | - Zhaohui Zhang
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550000, China.
- State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang, 550000, China.
| | - Jiachen Shen
- Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang, 550000, China
- State Key Laboratory Incubation Base for Karst Mountain Ecology Environment of Guizhou Province, Guiyang, 550000, China
| | - Zhihui Wang
- School of Life Sciences, Guizhou Normal University, Guiyang, 550000, China
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Oliveira M, Slezakova K, Fernandes A, Teixeira JP, Delerue-Matos C, Pereira MDC, Morais S. Occupational exposure of firefighters to polycyclic aromatic hydrocarbons in non-fire work environments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 592:277-287. [PMID: 28319714 DOI: 10.1016/j.scitotenv.2017.03.081] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 06/06/2023]
Abstract
This work aims to characterize personal exposure of firefighters to polycyclic aromatic hydrocarbons (PAHs) in non-fire work environments (fire stations), and assesses the respective risks. Eighteen PAHs (16 considered by USEPA as priority pollutants, dibenzo[a,l]pyrene and benzo[j]fluoranthene) were monitored in breathing zones of workers at five Portuguese fire stations during a normal shift. The obtained levels of PAHs fulfilled all existent occupational exposure limits as well as air quality guidelines with total concentrations (ΣPAHs) in range of 46.8-155ngm-3. Light compounds (2-3 rings) were the most predominant congeners (74-96% of ΣPAHs) whereas PAHs with 5-6 rings accounted 3-9% of ΣPAHs. Fuel and biomass combustions, vehicular traffic emissions, and use of lubricant oils were identified as the main sources of PAHs exposure at the studied fire corporations. Incremental lifetime cancer risks were below the recommend USEPA guideline of 10-6 and thus negligible for all the studied subjects, but WHO health-based guideline level of 10-5 was exceeded (9-44 times) at all fire corporations. These results thus show that even during non-fire situations firefighters are exposed to PAHs at levels that may promote some adverse health outcomes; therefore the respective occupational exposures to these compounds should be carefully controlled.
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Affiliation(s)
- Marta Oliveira
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal; LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Klara Slezakova
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal; LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Adília Fernandes
- Escola Superior de Saúde, Instituto Politécnico de Bragança, Avenida D. Afonso V, 5300-121, Bragança, Portugal
| | - João Paulo Teixeira
- Instituto Nacional de Saúde Pública, Departamento de Saúde Ambiental, Rua Alexandre Herculano 321, 4000-055 Porto, Portugal; Universidade do Porto, Instituto de Saúde Pública, Rua das Taipas 135, 4050-600 Porto, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
| | - Maria do Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Simone Morais
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
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Slezakova K, Oliveira M, Madureira J, Fernandes EDO, Delerue-Matos C, Morais S, Pereira MDC. Polycyclic aromatic hydrocarbons (PAH) in Portuguese educational settings: a comparison between preschools and elementary schools. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:630-640. [PMID: 28679081 DOI: 10.1080/15287394.2017.1286931] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this study was to determine levels and risks due to inhalation exposure to polycyclic aromatic hydrocarbons (PAH) in different educational settings, namely for 3- to 5- year-old and 6- to 10-year-old children. Eighteen PAH (16 priority designated by US Environmental Protection Agency (USEPA) and dibenzo[a,l]pyrene and benzo[j]fluoranthene) were simultaneously collected in indoor and outdoor air at two Portuguese preschools (PS1-PS2) and five elementary schools (ES1-ES5) from March to May 2014. Indoor concentrations at PS and ES were significantly different, with total levels (∑PAHs) 0.721-15.9 ng/m3 at PS1-PS2 and 5.03-23.6 ng/m3 at ES1-ES5. The corresponding outdoor concentrations were, respectively, 1.22-32.7 ng/m3 and 2.6-31.5 ng/m3. Polycyclic aromatic hydrocarbons with 2-3 aromatic rings were predominantly emitted by indoor sources, while compounds with 4-6 aromatic rings were mainly generated by infiltration of ambient PAH pollution to indoors. Excess lifetime risks of lung cancer exceeded the World Health Organization (WHO) designated guideline of 10-5 in both types of schools (15-42-fold at PS; 15-52-fold at ES). However, total (sum of indoor and outdoor exposure) incremental lifetime cancer risks (ILCR) were below the USEPA level of 10-6 at all studied institutions and thus considered negligible. Finally, ILCR due to indoor exposure represented 60-75% and 70-85% of the total ILCR at PS and ES, respectively, thus indicating the need for development and implementation of indoor air quality guidelines in educations settings.
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Affiliation(s)
- Klara Slezakova
- a LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
- b REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Marta Oliveira
- a LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
- b REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Joana Madureira
- c Institute of Science and Innovation on Mechanical Engineering and Industrial Management , Porto , Portugal
| | | | - Cristina Delerue-Matos
- b REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Simone Morais
- b REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Maria do Carmo Pereira
- a LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
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Oliveira M, Slezakova K, Delerue-Matos C, Pereira MDC, Morais S. Indoor air quality in preschools (3- to 5-year-old children) in the Northeast of Portugal during spring-summer season: pollutants and comfort parameters. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2017; 80:740-755. [PMID: 28569620 DOI: 10.1080/15287394.2017.1286932] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Indoor air quality at schools (elementary, primary) has been the subject of many studies; however, there are still relative few data regarding preschool (3- to 5-year-old children) environments. This investigation determined the concentrations of particulate matter (PM)2.5, total volatile organic compounds (TVOC), formaldehyde, carbon monoxide (CO), and ozone (O3) as well as the levels of carbon dioxide (CO2), temperature, and relative humidity (RH) in the indoor and outdoor air of two preschools situated in different geographical regions of Portugal. The indoor concentrations of TVOC, CO, O3, and CO2 were predominantly higher at the end of school day compared to early morning periods. The TVOC and CO2 concentrations were higher indoors than outdoors suggesting predominantly an indoor origin. Outdoor air infiltrations were the major contributing source of CO and O3 to indoor air in both preschools. The concentrations of all pollutants were within the limits defined by national regulations and international organizations, except for TVOC that exceeded 8-12-fold higher than the recommendation of 0.2 mg/m3 proposed by European Commission. The levels of CO2 were below the protective guideline of 2250 mg/m3 (Portuguese legislation); however, the observed ranges exceeded the Portuguese margin of tolerance (2925 mg/m3) at the end of school days, indicating the impact of occupancy rates particularly at one of the preschools. Regarding comfort parameters, temperature exerted a significant influence on O3 concentrations, while RH values were significantly correlated with TVOC levels in indoor air of preschools, particularly during the late afternoon periods.
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Affiliation(s)
- Marta Oliveira
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Klara Slezakova
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
- b LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
| | - Cristina Delerue-Matos
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
| | - Maria do Carmo Pereira
- b LEPABE, Departamento de Engenharia Química , Faculdade de Engenharia, Universidade do Porto , Porto , Portugal
| | - Simone Morais
- a REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto , Porto , Portugal
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22
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Agudelo-Castañeda DM, Teixeira EC, Schneider IL, Lara SR, Silva LFO. Exposure to polycyclic aromatic hydrocarbons in atmospheric PM 1.0 of urban environments: Carcinogenic and mutagenic respiratory health risk by age groups. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 224:158-170. [PMID: 28268029 DOI: 10.1016/j.envpol.2017.01.075] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/20/2017] [Accepted: 01/28/2017] [Indexed: 06/06/2023]
Abstract
We investigated the carcinogenic and mutagenic respiratory health risks related to the exposure to atmospheric PAHs in an urban area. Our study focused in the association of these pollutants and their possible effect in human health, principally respiratory and circulatory diseases. Also, we determined a relationship between the inhalation risk of PAHs and meteorological conditions. We validated the hypothesis that in winter PAHs with high molecular weight associated to submicron particles (PM1) may increase exposure risk, especially for respiratory diseases, bronchitis and pneumonia diseases. Moreover, in our study we verified the relationship between diseases and several carcinogenic PAHs (Ind, BbkF, DahA, BaP, and BghiP). These individual PAHs contributed the most to the potential risk of exposure for inhalation of PM1.0. Even at lower ambient concentrations of BaP and DahA in comparison with individual concentrations of other PAHs associated to PM1.0. Mainly, research suggests to include carcinogenic and mutagenic PAHs in future studies of environmental health risk due to their capacity to associate to PM10. Such carcinogenic and mutagenic PAHs are likely to provide the majority of the human exposure, since they originate from dense traffic urban areas were humans congregate.
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Affiliation(s)
- Dayana M Agudelo-Castañeda
- Research Group in Environmental Management and Sustainability, Faculty of Environmental Sciences, Universidad De La Costa, Calle 58 #55-66, Barranquilla, Atlántico, 080002, Colombia
| | - Elba C Teixeira
- Research Department, Fundação Estadual de Proteção Ambiental Henrique Luís Roessler, Av. Borges de Medeiros, 261, Porto Alegre, RS, 90020-021, Brazil; Postgraduate Program in Remote Sensing and Meteorology, Geosciences Institute, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, RS, 91501-970, Brazil.
| | - Ismael L Schneider
- Research Group in Environmental Management and Sustainability, Faculty of Environmental Sciences, Universidad De La Costa, Calle 58 #55-66, Barranquilla, Atlántico, 080002, Colombia
| | - Sheila Rincón Lara
- Clinical Research Unit, Jewish General Hospital, 3755 Côte-Ste-Catherine Road, Montreal, Quebec, H3T 1E2, Canada
| | - Luis F O Silva
- Research Group in Environmental Management and Sustainability, Faculty of Environmental Sciences, Universidad De La Costa, Calle 58 #55-66, Barranquilla, Atlántico, 080002, Colombia
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23
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Volatile Profiles of Emissions from Different Activities Analyzed Using Canister Samplers and Gas Chromatography-Mass Spectrometry (GC/MS) Analysis: A Case Study. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14020195. [PMID: 28212294 PMCID: PMC5334749 DOI: 10.3390/ijerph14020195] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 02/07/2017] [Indexed: 11/17/2022]
Abstract
The objective of present study was to identify volatile organic compounds (VOCs) emitted from several sources (fuels, traffic, landfills, coffee roasting, a street-food laboratory, building work, indoor use of incense and candles, a dental laboratory, etc.) located in Palermo (Italy) by using canister autosamplers and gas chromatography-mass spectrometry (GC-MS) technique. In this study, 181 VOCs were monitored. In the atmosphere of Palermo city, propane, butane, isopentane, methyl pentane, hexane, benzene, toluene, meta- and para-xylene, 1,2,4 trimethyl benzene, 1,3,5 trimethyl benzene, ethylbenzene, 4 ethyl toluene and heptane were identified and quantified in all sampling sites.
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Almendra R, Santana P, Vasconcelos J, Silva G, Gonçalves F, Ambrizzi T. The influence of the winter North Atlantic Oscillation index on hospital admissions through diseases of the circulatory system in Lisbon, Portugal. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2017; 61:325-333. [PMID: 27459867 PMCID: PMC5263193 DOI: 10.1007/s00484-016-1214-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/11/2016] [Accepted: 07/12/2016] [Indexed: 05/20/2023]
Abstract
The aim of this paper is to analyze the relationship between North Atlantic Oscillation (NAO), meteorological variables, air pollutants, and hospital admissions due to diseases of circulatory systems in Lisbon (Portugal) during winter months (2003-2012). This paper is one of the few studies analyzing the impact of NAO on health through its influence on thermal stress and air pollution and is the first to be conducted in Lisbon. This study uses meteorological data (synthetized into a thermal comfort index), air pollutant metrics, and the NAO index (all clustered in 10-day cycles to overcome daily variability of the NAO index). The relationship between morbidity, thermal comfort index, NAO index, and air pollutants was explored through several linear models adjusted to seasonality through a periodic function. The possible indirect effect between the NAO index and hospital admissions was tested, assuming that NAO (independent variable) is affecting hospital admissions (outcome variable) through thermal discomfort and/or pollution levels (tested as individual mediators). This test was conducted through causal mediation analysis and adjusted for seasonal variation. The results from this study suggest a possible indirect relationship between NAO index and hospital admissions. Although NAO is not significantly associated with hospital admissions, it is significantly associated with CO, PM2.5, NO, and SO2 levels, which in turn increase the probability of hospitalization. The discomfort index (built with temperature and relative humidity) is significantly associated with hospital admissions, but its variability is not explained by the NAO index. This study highlights the impacts of the atmospheric circulation patterns on health. Furthermore, understanding the influence of the atmospheric circulation patterns can support the improvement of the existing contingency plans.
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Affiliation(s)
- Ricardo Almendra
- Centre of Studies on Geography and Spatial Planning, University of Coimbra, Coimbra, Portugal.
| | - Paula Santana
- Centre of Studies on Geography and Spatial Planning, University of Coimbra, Coimbra, Portugal
| | - João Vasconcelos
- School of Tourism and Maritime Technology, Polytechnic Institute of Leiria, Leiria, Portugal
| | - Giovani Silva
- CEAUL and Department of Mathematics-IST, Universidade de Lisboa, Lisboa, Portugal
| | - Fábio Gonçalves
- Atmospheric Sciences, University of Sao Paulo, Sao Paulo, Brasil
| | - Tércio Ambrizzi
- Atmospheric Sciences, University of Sao Paulo, Sao Paulo, Brasil
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25
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Oliveira M, Slezakova K, Madureira J, de Oliveira Fernandes E, Delerue-Matos C, Morais S, do Carmo Pereira M. Polycyclic aromatic hydrocarbons in primary school environments: Levels and potential risks. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 575:1156-1167. [PMID: 27693148 DOI: 10.1016/j.scitotenv.2016.09.195] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 09/22/2016] [Accepted: 09/23/2016] [Indexed: 06/06/2023]
Abstract
Although polycyclic aromatic hydrocarbons (PAHs) are priority air pollutants that strongly affect human health, information concerning the indoor exposures is still limited. This study characterized PAH levels in primary schools and evaluated risk for the respective students (aged 8-10years) in comparison with school personnel. During January-April 2014, eighteen particulate-bound (PM2.5) PAHs (16 USEPA priority compounds, dibenzo[a,l]pyrene, benzo[j]fluoranthene) were collected (indoors and outdoors) at ten primary urban schools in Portugal. Total mean concentrations (ΣPAHs) ranged 2.8-54ngm-3 in indoor air, whereas corresponding outdoor levels were 7.1-48ngm-3. Indoor/outdoor ratios of lighter congeners (2-3 aromatic rings) demonstrated a contribution from indoor origin while heavier PAHs (4-6 aromatic rings) originated mostly from infiltration of ambient air indoors; traffic (both from diesel and gasoline fuelled vehicles) was the predominant source of indoor PAHs. Total cancer risk of 8-10years old children exceeded (up to 22 times) USEPA recommended guideline of 10-6, and 7-87 times WHO health-based threshold of 10-5. Risk due to indoor exposure in schools was 2-10 times higher than outdoors, mainly because of the higher amount of time that students spent indoors.
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Affiliation(s)
- Marta Oliveira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal; REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
| | - Klara Slezakova
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal; REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
| | - Joana Madureira
- Institute of Science and Innovation on Mechanical Engineering and Industrial Management, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Eduardo de Oliveira Fernandes
- Institute of Science and Innovation on Mechanical Engineering and Industrial Management, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal
| | - Simone Morais
- REQUIMTE-LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal.
| | - Maria do Carmo Pereira
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
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26
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Particle Bound Metals at Major Intersections in an Urban Location and Source Identification Through Use of Metal Markers. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2016. [DOI: 10.1007/s40010-016-0268-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Albuquerque M, Coutinho M, Borrego C. Long-term monitoring and seasonal analysis of polycyclic aromatic hydrocarbons (PAHs) measured over a decade in the ambient air of Porto, Portugal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 543:439-448. [PMID: 26599144 DOI: 10.1016/j.scitotenv.2015.11.064] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/12/2015] [Accepted: 11/13/2015] [Indexed: 06/05/2023]
Abstract
The present paper reports the analytical results of PAHs concentrations in ambient air obtained in the PM10 and gas-phase, from 2004 to 2014, in Porto, Portugal. As part of a monitoring programme conducted by IDAD - Institute of Environment and Development and supported by the regional municipal solid waste (MSW) management authorities, an extensive database of PAH concentrations in ambient air was collected in Porto's metropolitan area. During this period a total of 201 samples were collected in two sites classified as suburban. Analytical results showed a clear decreasing trend of total PAHs (∑PAH) and benzo[a]pyrene (BaP) levels during the period of study, especially in the first years of monitoring. The average annual concentrations of BaP were, throughout the monitoring period, lower than the target value for the annual average (1 ng m(-3)) defined in the European legislation. PAHs levels showed a strong seasonality, with higher concentrations values during the colder months. The winter/summer ratio of ∑PAH for the eleven years of study was 5, revealing the seasonal variation of PAHs in the studied area. The estimated toxic equivalency factors (TEFs) used to assess the contribution of the carcinogenic potential, confirmed a significant presence of the moderately active carcinogenic BaP and dibenz[ah]anthracene (DahA) in the samples collected in Porto. The ratio values of individual PAHs concentrations were used as diagnostic tool to identify the possible origin of PAH in the ambient air of Porto. Based on diagnostic ratios, it may be concluded that automobile traffic emissions, mainly related to diesel vehicles, were the major contribution of PAH levels in the ambient air, although some others contributions, such as coal and wood combustion, were identified.
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Affiliation(s)
- M Albuquerque
- IDAD - Instituto do Ambiente e Desenvolvimento, Campus Universitário, 3810-193 Aveiro, Portugal.
| | - M Coutinho
- IDAD - Instituto do Ambiente e Desenvolvimento, Campus Universitário, 3810-193 Aveiro, Portugal
| | - C Borrego
- IDAD - Instituto do Ambiente e Desenvolvimento, Campus Universitário, 3810-193 Aveiro, Portugal; CESAM & Department of Environment and Planning, University of Aveiro, 3810-193 Aveiro, Portugal
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28
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Dang J, He M. Mechanisms and kinetic parameters for the gas-phase reactions of anthracene and pyrene with Cl atoms in the presence of NOx. RSC Adv 2016. [DOI: 10.1039/c5ra25959b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanisms of the Cl radical-initiated atmospheric oxidation of anthracene (Ant) and pyrene (Pyr) were investigated by using quantum chemistry calculations.
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Affiliation(s)
- Juan Dang
- Environment Research Institute
- Shandong University
- Jinan 250100
- P. R. China
| | - Maoxia He
- Environment Research Institute
- Shandong University
- Jinan 250100
- P. R. China
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29
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Wu F, Liu X, Wang W, Man YB, Chan CY, Liu W, Tao S, Wong MH. Characterization of particulate-bound PAHs in rural households using different types of domestic energy in Henan Province, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 536:840-846. [PMID: 26258556 DOI: 10.1016/j.scitotenv.2015.07.101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 07/15/2015] [Accepted: 07/22/2015] [Indexed: 05/09/2023]
Abstract
The concentrations and composition of sixteen PAHs adsorbed to respirable particulate matter (PM10≤10 μm) and inhalable particulate matter (PM2.5≤2.5 μm) were determined during autumn and winter in rural households of Henan Province, China, which used four types of domestic energy [crop residues, coal, liquid petroleum gas (LPG) and electricity] for cooking and heating. The present results show that there were significantly (p<0.05) seasonal variations of particulate-bound PAHs in the rural households. The daily mean concentrations of particulate-bound PAHs in the kitchens, sitting rooms and outdoors were apparently higher in winter than those in autumn, except those in the kitchens using coal. The present study also shows that there were obvious variations of particulate-bound PAHs among the four types of domestic energy used in the rural households. The households using LPG for cooking can, at least in some circumstances, have higher concentrations of PAHs in the kitchens than using crop residues or electricity. In addition, using coal in the sitting rooms seemed to result in apparently higher concentrations of particulate-bound PAHs than using the other three types of domestic energy during winter. The most severe contamination occurred in the kitchens using LPG in winter, where the daily mean concentrations of PM2.5-bound PAHs were up to 762.5±931.2 ng m(-3), indicating that there was serious health risk of inhalation exposure to PAHs in the rural households of Henan Province. Rural residents' exposure to PM2.5-bound PAHs in kitchens would be roughly reduced by 69.8% and 85.5% via replacing coal or crop residues with electricity in autumn. The pilot research would provide important supplementary information to the indoor air pollution studies in rural area.
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Affiliation(s)
- Fuyong Wu
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, and College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100 Shaanxi, PR China; Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong SAR, PR China; School of Municipal and Environment Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR China.
| | - Xueping Liu
- School of Municipal and Environment Engineering, Henan University of Urban Construction, Pingdingshan 467036, PR China
| | - Wei Wang
- Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong SAR, PR China
| | - Yu Bon Man
- Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong SAR, PR China
| | - Chuen Yu Chan
- Faculty of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, PR China
| | - Wenxin Liu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing 100871, PR China
| | - Shu Tao
- Laboratory for Earth Surface Processes, College of Urban and Environmental Science, Peking University, Beijing 100871, PR China
| | - Ming Hung Wong
- Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong SAR, PR China.
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30
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Oliveira M, Slezakova K, Delerue-Matos C, Pereira MDC, Morais S. Exposure to polycyclic aromatic hydrocarbons and assessment of potential risks in preschool children. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:13892-13902. [PMID: 25943510 DOI: 10.1007/s11356-015-4588-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 04/22/2015] [Indexed: 06/04/2023]
Abstract
As children represent one of the most vulnerable groups in society, more information concerning their exposure to health hazardous air pollutants in school environments is necessary. Polycyclic aromatic hydrocarbons (PAHs) have been identified as priority air pollutants due to their mutagenic and carcinogenic properties that strongly affect human health. Thus, this work aims to characterize levels of 18 selected PAHs in preschool environment, and to estimate exposure and assess the respective risks for 3-5-year-old children (in comparison with adults). Gaseous PAHs (mean of 44.5 ± 12.3 ng m(-3)) accounted for 87% of the total concentration (ΣPAHs) with 3-ringed compounds being the most abundant (66% of gaseous ΣPAHs). PAHs with 5 rings were the most abundant ones in the particulate phase (PM; mean of 6.89 ± 2.85 ng m(-3)) being predominantly found in PM1 (78% particulate ΣPAHs). Overall child exposures to PAHs were not significantly different between older children (4-5 years old) and younger ones (3 years old). Total carcinogenic risks due to particulate-bound PAHs indoors were higher than outdoor ones. The estimated cancer risks of both preschool children and the staff were lower than the United States Environmental Protection Agency (USEPA) threshold of 10(-6) but slightly higher than WHO-based guideline.
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Affiliation(s)
- Marta Oliveira
- REQUIMTE, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, R. Dr. António Bernardino de Almeida 431, 4200-072, Porto, Portugal
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Dang J, Shi X, Zhang Q, Hu J, Wang W. Mechanism and thermal rate constant for the gas-phase ozonolysis of acenaphthylene in the atmosphere. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 514:344-350. [PMID: 25679814 DOI: 10.1016/j.scitotenv.2014.12.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2014] [Revised: 12/01/2014] [Accepted: 12/03/2014] [Indexed: 06/04/2023]
Abstract
Due to its prevalent presence, it is critical to clarify the atmospheric fate of acenaphthylene (Ary). In this paper, the reaction mechanism of the gas-phase ozonolysis of Ary was investigated by using quantum chemistry methods. Possible reaction pathways were discussed, and the theoretical results were compared with the available experimental data. The rate constants of the crucial elementary reactions were determined by the Rice-Ramsperger-Kassel-Marcus (RRKM) theory. The main products include secondary ozonide, naphthalene-1,8-dicarbaldehyde, 1,8-naphthalic anhydride, oxaacenaphthylene-2-one, 1-naphthaldehyde, 2-hydroxy-1-naphthaldehyde, and α-hydroxyhydroperoxide. The reaction of the unsaturated cyclo-pentafused ring with O₃ is the dominant pathway. The overall rate constant of the O₃ addition reaction is 5.31×10(-16)cm(3)molecule(-1)s(-1) at 298 K and 1 atm. The atmospheric lifetime of Ary determined by O₃ is about 0.75 h. This work provides a comprehensive investigation of the ozonolysis of Ary and should help to understand its atmospheric fate.
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Affiliation(s)
- Juan Dang
- Environment Research Institute, Shandong University, Jinan 250100, PR China
| | - Xiangli Shi
- Environment Research Institute, Shandong University, Jinan 250100, PR China
| | - Qingzhu Zhang
- Environment Research Institute, Shandong University, Jinan 250100, PR China.
| | - Jingtian Hu
- Environment Research Institute, Shandong University, Jinan 250100, PR China
| | - Wenxing Wang
- Environment Research Institute, Shandong University, Jinan 250100, PR China
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32
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Characterization and quantification of PAH atmospheric pollution from a large petrochemical complex in Guangzhou: GC–MS/MS analysis. Microchem J 2015. [DOI: 10.1016/j.microc.2014.12.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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33
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Pongpiachan S, Tipmanee D, Khumsup C, Kittikoon I, Hirunyatrakul P. Assessing risks to adults and preschool children posed by PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) during a biomass burning episode in Northern Thailand. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 508:435-44. [PMID: 25506906 DOI: 10.1016/j.scitotenv.2014.12.019] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 12/03/2014] [Accepted: 12/07/2014] [Indexed: 05/14/2023]
Abstract
To investigate the potential cancer risk resulting from biomass burning, polycyclic aromatic hydrocarbons (PAHs) bound to fine particles (PM2.5) were assessed in nine administrative northern provinces (NNP) of Thailand, before (N-I) and after (N-II) a haze episode. The average values of Σ 3,4-ring PAHs and B[a] P Equivalent concentrations in world urban cities were significantly (p<0.05) much higher than those in samples collected from northern provinces during both sampling periods. Application of diagnostic binary ratios of PAHs underlined the predominant contribution of vehicular exhaust to PM2.5-bound PAH levels in NNP areas, even in the middle of the agricultural waste burning period. The proximity of N-I and N-II values in three-dimensional (3D) principal component analysis (PCA) plots also supports this conclusion. Although the excess cancer risk in NNP areas is much lower than those of other urban area and industrialized cities, there are nevertheless some concerns relating to adverse health impacts on preschool children due to non-dietary exposure to PAHs in home environments.
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Affiliation(s)
- Siwatt Pongpiachan
- NIDA Center for Research & Development of Disaster Prevention & Management, School of Social and Environmental Development, National Institute of Development Administration (NIDA), 118 Moo 3, Sereethai Road, Klong-Chan, Bangkapi, Bangkok 10240, Thailand.
| | - Danai Tipmanee
- International Postgraduate Program in Environmental Management, Graduate School, Chulalongkorn University, Bangkok, Thailand; Center of Excellence for Environmental and Hazardous Waste Management (EHWM), Chulalongkorn University, Bangkok, Thailand
| | - Chukkapong Khumsup
- Bara Scientific Co., Ltd., 968 Rama 4 Silom Bangrak, Bangkok 10500, Thailand
| | - Itthipon Kittikoon
- Bara Scientific Co., Ltd., 968 Rama 4 Silom Bangrak, Bangkok 10500, Thailand
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34
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Slezakova K, Texeira C, Morais S, Pereira MDC. Children's Indoor Exposures to (Ultra)Fine Particles in an Urban Area: Comparison Between School and Home Environments. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2015; 78:886-896. [PMID: 26167754 DOI: 10.1080/15287394.2015.1051203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Due to their detrimental effects on human health, scientific interest in ultrafine particles (UFP), has been increasing but available information is far from comprehensive. Children, who represent one of the most susceptible subpopulation, spend the majority of time in schools and homes. Thus, the aim of this study is to (1) assess indoor levels of particle number concentrations (PNC) in ultrafine and fine (20-1000 nm) range at school and home environments and (2) compare indoor respective dose rates for 3- to 5-yr-old children. Indoor particle number concentrations in range of 20-1000 nm were consecutively measured during 56 d at two preschools (S1 and S2) and three homes (H1-H3) situated in Porto, Portugal. At both preschools different indoor microenvironments, such as classrooms and canteens, were evaluated. The results showed that total mean indoor PNC as determined for all indoor microenvironments were significantly higher at S1 than S2. At homes, indoor levels of PNC with means ranging between 1.09 × 10(4) and 1.24 × 10(4) particles/cm(3) were 10-70% lower than total indoor means of preschools (1.32 × 10(4) to 1.84 × 10(4) particles/cm(3)). Nevertheless, estimated dose rates of particles were 1.3- to 2.1-fold higher at homes than preschools, mainly due to longer period of time spent at home. Daily activity patterns of 3- to 5-yr-old children significantly influenced overall dose rates of particles. Therefore, future studies focusing on health effects of airborne pollutants always need to account for children's exposures in different microenvironments such as homes, schools, and transportation modes in order to obtain an accurate representation of children overall exposure.
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Affiliation(s)
- Klara Slezakova
- a LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia , Universidade do Porto , Porto , Portugal
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Oliveira RL, Loyola J, Minho AS, Quiterio SL, de Almeida Azevedo D, Arbilla G. PM₂.₅-bound polycyclic aromatic hydrocarbons in an area of Rio de Janeiro, Brazil impacted by emissions of light-duty vehicles fueled by ethanol-blended gasoline. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2014; 93:781-786. [PMID: 25344749 DOI: 10.1007/s00128-014-1409-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Accepted: 10/17/2014] [Indexed: 06/04/2023]
Abstract
The aim of this study was to characterize the PM2.5-bound polycyclic aromatic hydrocarbon (PAH) concentrations and their diagnostic ratios in an area impacted by light-duty vehicles fueled by neat ethanol and ethanol-blended gasoline. Samples were collected using a high-volume sampler, extracted, and analyzed for all 16 EPA-priority PAHs using gas chromatography/mass spectrometry (GC/MS) following the EPA 3550B Method. The most abundant PAHs were benzo[g,h,i]perylene, benzo[b]fluoranthene, benzo[a]pyrene and indeno[1,2,3-c,d]pyrene. The total mean concentration was 3.80 ± 2.88 ng m(-3), and the contribution of carcinogenic species was 58 ± 16 % of the total PAHs. The cumulative health hazard from the PAH mixture was determined, and the carcinogenic equivalents and mutagenic equivalents were 0.80 ± 0.82 and 1.17 ± 1.04 ng m(-3), respectively. Diagnostic ratios and normalized ratios were calculated for the individual samples.
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Affiliation(s)
- Rafael Lopes Oliveira
- Instituto de Química, Centro de Tecnologia, Universidade Federal do Rio de Janeiro, Bloco A, Sala 408, Cidade Universitária, Ilha do Fundão, Rio de Janeiro, RJ, 21949-900, Brazil
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Fonseca J, Slezakova K, Morais S, Pereira MC. Assessment of ultrafine particles in Portuguese preschools: levels and exposure doses. INDOOR AIR 2014; 24:618-628. [PMID: 24689947 DOI: 10.1111/ina.12114] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 03/26/2014] [Indexed: 06/03/2023]
Abstract
UNLABELLED The aim of this work was to assess ultrafine particles (UFP) number concentrations in different microenvironments of Portuguese preschools and to estimate the respective exposure doses of UFP for 3-5-year-old children (in comparison with adults). UFP were sampled both indoors and outdoors in two urban (US1, US2) and one rural (RS1) preschool located in north of Portugal for 31 days. Total levels of indoor UFP were significantly higher at the urban preschools (mean of 1.82 × 10(4) and 1.32 × 10(4) particles/cm(3) at US1 an US2, respectively) than at the rural one (1.15 × 10(4) particles/cm(3) ). Canteens were the indoor microenvironment with the highest UFP (mean of 5.17 × 10(4) , 3.28 × 10(4) , and 4.09 × 10(4) particles/cm(3) at US1, US2, and RS1), whereas the lowest concentrations were observed in classrooms (9.31 × 10(3) , 11.3 × 10(3) , and 7.14 × 10(3) particles/cm(3) at US1, US2, and RS1). Mean indoor/outdoor ratios (I/O) of UFP at three preschools were lower than 1 (0.54-0.93), indicating that outdoor emissions significantly contributed to UFP indoors. Significant correlations were obtained between temperature, wind speed, relative humidity, solar radiation, and ambient UFP number concentrations. The estimated exposure doses were higher in children attending urban preschools; 3-5-year-old children were exposed to 4-6 times higher UFP doses than adults with similar daily schedules. PRACTICAL IMPLICATIONS This study reports information on ultrafine particles (UFPs) in various indoor and outdoor microenvironments (canteens, classrooms, gymnasiums, and outdoor) of urban and rural preschools. It identifies the potential sources and origins, characterizes the influence of meteorological parameters on UFP levels, and performs a comparison with other existing international studies. To this date, relatively few studies have investigated UFP in preschools (none in Portugal) and none assessed exposure dose for different age-groups. The obtained findings showed that levels of UFP in various microenvironments of schools differed significantly. Therefore, to obtain an accurate representation of child’s overall preschool exposure profiles, the exposures occurring in these different microenvironments should be always accounted for.
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Affiliation(s)
- J Fonseca
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
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Application of binary diagnostic ratios of polycyclic aromatic hydrocarbons for identification of Tsunami 2004 backwash sediments in Khao Lak, Thailand. ScientificWorldJournal 2014; 2014:485068. [PMID: 25170522 PMCID: PMC4130332 DOI: 10.1155/2014/485068] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 06/16/2014] [Accepted: 06/18/2014] [Indexed: 11/20/2022] Open
Abstract
Identification of Tsunami deposits has long been a controversial issue among geologists. Although there are many identification criteria based on the sedimentary characteristics of unequivocal Tsunami deposits, the concept still remains ambiguous. Apart from relying on some conventional geological, sedimentological, and geoscientific records, geologists need some alternative “proxies” to identify the existence of Tsunami backwash in core sediments. Polycyclic aromatic hydrocarbons (PAHs) are a class of very stable organic molecules, which can usually be presented as complex mixtures of several hundred congeners; one can assume that the “Tsunami backwash deposits” possess different fingerprints of PAHs apart from those of “typical marine sediments.” In this study, three-dimensional plots of PAH binary ratios successfully identify the Tsunami backwash deposits in comparison with those of global marine sediments. The applications of binary ratios of PAHs coupled with HCA are the basis for developing site-specific Tsunami deposit identification criteria that can be applied in paleotsunami deposits investigations.
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Slezakova K, Castro D, Delerue-Matos C, Morais S, Pereira MDC. Levels and risks of particulate-bound PAHs in indoor air influenced by tobacco smoke: a field measurement. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:4492-4501. [PMID: 24337991 DOI: 10.1007/s11356-013-2391-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2013] [Accepted: 11/20/2013] [Indexed: 06/03/2023]
Abstract
Considering tobacco smoke as one of the most health-relevant indoor sources, the aim of this work was to further understand its negative impacts on human health. The specific objectives of this work were to evaluate the levels of particulate-bound PAHs in smoking and non-smoking homes and to assess the risks associated with inhalation exposure to these compounds. The developed work concerned the application of the toxicity equivalency factors approach (including the estimation of the lifetime lung cancer risks, WHO) and the methodology established by USEPA (considering three different age categories) to 18 PAHs detected in inhalable (PM10) and fine (PM2.5) particles at two homes. The total concentrations of 18 PAHs (ΣPAHs) was 17.1 and 16.6 ng m(-3) in PM10 and PM2.5 at smoking home and 7.60 and 7.16 ng m(-3) in PM10 and PM2.5 at non-smoking one. Compounds with five and six rings composed the majority of the particulate PAHs content (i.e., 73 and 78 % of ΣPAHs at the smoking and non-smoking home, respectively). Target carcinogenic risks exceeded USEPA health-based guideline at smoking home for 2 different age categories. Estimated values of lifetime lung cancer risks largely exceeded (68-200 times) the health-based guideline levels at both homes thus demonstrating that long-term exposure to PAHs at the respective levels would eventually cause risk of developing cancer. The high determined values of cancer risks in the absence of smoking were probably caused by contribution of PAHs from outdoor sources.
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Affiliation(s)
- Klara Slezakova
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, Porto, 4200-465, Portugal
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Slezakova K, Morais S, Pereira MDC. Trace metals in size-fractionated particulate matter in a Portuguese hospital: exposure risks assessment and comparisons with other countries. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:3604-3620. [PMID: 24271728 DOI: 10.1007/s11356-013-2316-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 10/31/2013] [Indexed: 06/02/2023]
Abstract
Hospitals are considered as a special and important type of indoor public place where air quality has significant impacts on potential health outcomes. Information on indoor air quality of these environments, concerning exposures to particulate matter (PM) and related toxicity, is limited though. This work aims to evaluate risks associated with inhalation exposure to ten toxic metals and chlorine (As, Ni, Cr, Cd, Pb, Mn, Se, Ba, Al, Si, and Cl) in coarse (PM2.5-10) and fine (PM2.5) particles in a Portuguese hospital in comparison with studies representative of other countries. Samples were collected during 1 month in one urban hospital; elemental PM characterization was determined by proton-induced X-ray emission. Noncarcinogenic and carcinogenic risks were assessed according to the methodology provided by the United States Environmental Protection Agency (USEPA; Region III Risk-Based Concentration Table) for three different age categories of hospital personnel (adults, >20, and <65 years) and patients (considering nine different age groups, i.e., children of 1-3 years to seniors of >65 years). The estimated noncarcinogenic risks due to occupational inhalation exposure to PM2.5-bound metals ranged from 5.88 × 10(-6) for Se (adults, 55-64 years) to 9.35 × 10(-1) for As (adults, 20-24 years) with total noncarcinogenic risks (sum of all metals) above the safe level for all three age categories. As and Cl (the latter due to its high abundances) were the most important contributors (approximately 90 %) to noncarcinogenic risks. For PM2.5-10, noncarcinogenic risks of all metals were acceptable to all age groups. Concerning carcinogenic risks, for Ni and Pb, they were negligible (<1 × 10(-6)) in both PM fractions for all age groups of hospital personnel; potential risks were observed for As and Cr with values in PM2.5 exceeding (up to 62 and 5 times, respectively) USEPA guideline across all age groups; for PM2.5-10, increased excess risks of As and Cr were observed particularly for long-term exposures (adults, 55-64 years). Total carcinogenic risks highly (up to 67 times) exceeded the recommended level for all age groups, thus clearly showing that occupational exposure to metals in fine particles pose significant risks. If the extensive working hours of hospital medical staff were considered, the respective noncarcinogenic and carcinogenic risks were increased, the latter for PM2.5 exceeding the USEPA cumulative guideline of 10(-4). For adult patients, the estimated noncarcinogenic and carcinogenic risks were approximately three times higher than for personnel, with particular concerns observed for children and adolescents.
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Affiliation(s)
- Klara Slezakova
- LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, R. Dr. Roberto Frias, Porto, 4200-465, Portugal
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Slezakova K, Fonseca J, Morais S, do Carmo Pereira M. Ultrafine particles in ambient air of an urban area: dose implications for elderly. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2014; 77:827-836. [PMID: 25072715 DOI: 10.1080/15287394.2014.909303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Due to their detrimental effects on human health, the scientific interest in ultrafine particles (UFP) has been increasing, but available information is far from comprehensive. Compared to the remaining population, the elderly are potentially highly susceptible to the effects of outdoor air pollution. Thus, this study aimed to (1) determine the levels of outdoor pollutants in an urban area with emphasis on UFP concentrations and (2) estimate the respective dose rates of exposure for elderly populations. UFP were continuously measured over 3 weeks at 3 sites in north Portugal: 2 urban (U1 and U2) and 1 rural used as reference (R1). Meteorological parameters and outdoor pollutants including particulate matter (PM10), ozone (O3), nitric oxide (NO), and nitrogen dioxide (NO2) were also measured. The dose rates of inhalation exposure to UFP were estimated for three different elderly age categories: 64-70, 71-80, and >81 years. Over the sampling period levels of PM10, O3 and NO2 were in compliance with European legislation. Mean UFP were 1.7 × 10(4) and 1.2 × 10(4) particles/cm(3) at U1 and U2, respectively, whereas at rural site levels were 20-70% lower (mean of 1 ×10(4) particles/cm(3)). Vehicular traffic and local emissions were the predominant identified sources of UFP at urban sites. In addition, results of correlation analysis showed that UFP were meteorologically dependent. Exposure dose rates were 1.2- to 1.4-fold higher at urban than reference sites with the highest levels noted for adults at 71-80 yr, attributed mainly to higher inhalation rates.
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Affiliation(s)
- Klara Slezakova
- a LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia , Universidade do Porto , Porto , Portugal
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Galindo N, Gil-Moltó J, Varea M, Chofre C, Yubero E. Seasonal and interannual trends in PM levels and associated inorganic ions in southeastern Spain. Microchem J 2013. [DOI: 10.1016/j.microc.2013.02.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Rogula-Kozłowska W, Kozielska B, Klejnowski K. Concentration, origin and health hazard from fine particle-bound PAH at three characteristic sites in Southern Poland. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2013; 91:349-55. [PMID: 23877624 PMCID: PMC3745616 DOI: 10.1007/s00128-013-1060-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Accepted: 07/11/2013] [Indexed: 05/04/2023]
Abstract
Suspended particles with the aerodynamic diameters not greater than 2.5 μm (PM2.5) and 1 μm (PM1, sub-fraction of PM2.5) were sampled at three sites: an urban background site, rural background site, and urban traffic site in southern Poland. In total, there were 240 samples taken within 02.08.2009-27.12.2010. Fifteen polycyclic aromatic hydrocarbons (PAH) were determined in each dust fraction. The averages of the concentration of total PAH (ΣPAH) and of particular PAH, as well as the share of carcinogenic PAH in total PAH (ΣPAHcarc/ΣPAH), carcinogenic equivalent, mutagenic equivalent, and TCDD-toxic equivalent appeared high compared to other areas in the world. Their high values express the significance of health hazard from PM and PM-bound PAH in southern Poland. The diagnostic ratios suggest that PM-bound PAH originate from municipal (PM1-2.5) and vehicular (PM1) combustion.
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Affiliation(s)
- Wioletta Rogula-Kozłowska
- Institute of Environmental Engineering, Polish Academy of Sciences, 34 M. Skłodowska-Curie St., 41-819, Zabrze, Poland.
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Martins GV, Martins S, Martins AO, Basto MCP, Silva GV. Determination of gaseous polycyclic aromatic hydrocarbons by a simple direct method using thermal desorption-gas chromatography-mass spectrometry. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:6447-6457. [PMID: 23307050 DOI: 10.1007/s10661-012-3036-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2012] [Accepted: 12/04/2012] [Indexed: 06/01/2023]
Abstract
In the last decade, the development of novel analytical methodologies enabled the identification of several environmental pollutants responsible for health problems associated with indoor exposure. Polycyclic aromatic hydrocarbons (PAHs) are among the potential hazardous chemicals present in ambient air. Due to their bioaccumulation potential and carcinogenic/mutagenic effects, 16 PAHs are currently listed as priority air pollutants. The main goal of this work was to implement a new and simple method for sampling and determination of PAHs in air by using a thermal desorption (TD) technique followed by gas chromatography coupled with mass spectrometry analysis. A detailed study was carried out to optimise the experimental method in each of its phases, including (active) sampling, TD and chromatographic analysis. The results demonstrate that this approach allowed the detection and quantification of the six more volatile PAHs, namely, naphthalene, acenaphthylene, acenaphthene, fluorene, phenanthrene, and anthracene. Acceptable precision and good linearity over the explored range were obtained. No carry-over was observed during experimental tests and the method provided a reproducible answer. The applicability of the novel methodology was tested in real environment, namely, on the roof of a building in an urban area, in a domestic kitchen and in a collective car garage. The method enabled the identification of two PAHs in the field samples, specifically, naphthalene (two rings) and phenanthrene (three rings). With regard to PAHs sample composition, the most abundant PAH found, in the three different locations, was naphthalene, accounting for about 84-100 % of the total PAH mass detected.
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Affiliation(s)
- Gabriela V Martins
- IDMEC, Instituto de Engenharia Mecânica-Pólo FEUP, Rua Dr. Roberto Frias, 4200-465, Porto, Portugal.
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Kuo CY, Chien PS, Kuo WC, Wei CT, Rau JY. Comparison of polycyclic aromatic hydrocarbon emissions on gasoline- and diesel-dominated routes. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:5749-61. [PMID: 23124829 DOI: 10.1007/s10661-012-2981-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Accepted: 10/22/2012] [Indexed: 05/26/2023]
Abstract
Three diesel-dominated routes (DDRs) and three gasoline-dominated routes (GDRs) were chosen as the study sites. The total number of vehicles on GDRs (47,200) was much higher than that on DDRs (14,500). The concentration of polycyclic aromatic hydrocarbons (PAHs), elemental carbon, organic carbon, and metals from GDR roadsides was higher than that for DDRs. The diagnostic ratios (ANTHR/PHE + ANTHR, FLT/FLT + PYR, BaA/BaA + CHR, and IND/IND + BghiP + ANTHN) all indicated that the major PAH source on DDR and GDR was emissions from vehicle engine combustion. The marked diesel ratios of low molecular weight PAH2.5/T-PAH2.5, methyl-PAH2.5/T-PAH2.5, methyl-PHE/PHE, and Mo/PM2.5 on DDRs were higher than those on GDRs. Significant correlations were found between the number of vehicles and the concentration of T-PAH2.5, Car-PAHs2.5, and BaPeq2.5 on DDRs and GDRs. The increase in the levels of T-PAH2.5, Car-PAHs2.5, and BaPeq2.5 per 100 vehicles on DDRs was about 3.3, 3.5, and 4.2 times higher than that on GDRs, respectively. The higher percentage of high-exhaust volume from the larger amount of diesel vehicles on DDRs than that on GDRs was the main factor leading to these results. The diagnostic ratios BaA2.5/CHR2.5 and (BbF + BkF)2.5/BghiP2.5 showed significant differences between the fine PAH sources emitted on DDRs and GDRs, whereas the diagnostic ratios Me-PAH2.5/T-PAH2.5 and (BbF + BkF)2.5/BghiP2.5 showed good correlations with the percentages of diesel exhaust volume in the total exhaust volume (E(diesel)/E(total)) on DDRs.
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Affiliation(s)
- Chung-Yih Kuo
- Department of Public Health, College of Health Care and Management, Chung Shan Medical University, Taichung, Taiwan, Republic of China, 40242.
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Slezakova K, Pires JCM, Castro D, Alvim-Ferraz MCM, Delerue-Matos C, Morais S, Pereira MC. PAH air pollution at a Portuguese urban area: carcinogenic risks and sources identification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:3932-3945. [PMID: 23184127 DOI: 10.1007/s11356-012-1300-7] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Accepted: 11/05/2012] [Indexed: 05/21/2023]
Abstract
This study aimed to characterize air pollution and the associated carcinogenic risks of polycyclic aromatic hydrocarbon (PAHs) at an urban site, to identify possible emission sources of PAHs using several statistical methodologies, and to analyze the influence of other air pollutants and meteorological variables on PAH concentrations.The air quality and meteorological data were collected in Oporto, the second largest city of Portugal. Eighteen PAHs (the 16 PAHs considered by United States Environment Protection Agency (USEPA) as priority pollutants, dibenzo[a,l]pyrene, and benzo[j]fluoranthene) were collected daily for 24 h in air (gas phase and in particles) during 40 consecutive days in November and December 2008 by constant low-flow samplers and using polytetrafluoroethylene (PTFE) membrane filters for particulate (PM10 and PM2.5 bound) PAHs and pre-cleaned polyurethane foam plugs for gaseous compounds. The other monitored air pollutants were SO2, PM10, NO2, CO, and O3; the meteorological variables were temperature, relative humidity, wind speed, total precipitation, and solar radiation. Benzo[a]pyrene reached a mean concentration of 2.02 ng m(-3), surpassing the EU annual limit value. The target carcinogenic risks were equal than the health-based guideline level set by USEPA (10(-6)) at the studied site, with the cancer risks of eight PAHs reaching senior levels of 9.98 × 10(-7) in PM10 and 1.06 × 10(-6) in air. The applied statistical methods, correlation matrix, cluster analysis, and principal component analysis, were in agreement in the grouping of the PAHs. The groups were formed according to their chemical structure (number of rings), phase distribution, and emission sources. PAH diagnostic ratios were also calculated to evaluate the main emission sources. Diesel vehicular emissions were the major source of PAHs at the studied site. Besides that source, emissions from residential heating and oil refinery were identified to contribute to PAH levels at the respective area. Additionally, principal component regression indicated that SO2, NO2, PM10, CO, and solar radiation had positive correlation with PAHs concentrations, while O3, temperature, relative humidity, and wind speed were negatively correlated.
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Affiliation(s)
- K Slezakova
- LEPAE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465, Oporto, Portugal
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Pongpiachan S, Choochuay C, Hattayanone M, Kositanont C. Temporal and Spatial Distribution of Particulate Carcinogens and Mutagens in Bangkok, Thailand. Asian Pac J Cancer Prev 2013; 14:1879-87. [DOI: 10.7314/apjcp.2013.14.3.1879] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Pongpiachan S. Diurnal Variation, Vertical Distribution and Source Apportionment of Carcinogenic Polycyclic Aromatic Hydrocarbons (PAHs) in Chiang-Mai, Thailand. Asian Pac J Cancer Prev 2013; 14:1851-63. [DOI: 10.7314/apjcp.2013.14.3.1851] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Masala S, Bergvall C, Westerholm R. Determination of benzo[a]pyrene and dibenzopyrenes in a Chinese coal fly ash certified reference material. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 432:97-102. [PMID: 22728296 DOI: 10.1016/j.scitotenv.2012.05.081] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2012] [Revised: 05/11/2012] [Accepted: 05/25/2012] [Indexed: 06/01/2023]
Abstract
Air pollution from coal combustion is of great concern in China because coal is the country's principal source of energy and it has been estimated that coal combustion is one of the main sources of polycyclic aromatic hydrocarbon (PAH) emissions in the nation. This study reports the concentrations of 15 PAHs including benzo[a]pyrene, dibenzo[a,l]pyrene, dibenzo[a,e]pyrene, dibenzo[a,i]pyrene and dibenzo[a,h]pyrene in a coal fly ash certified reference material (CRM) from China. To the best of our knowledge, dibenzo[a,l]pyrene, dibenzo[a,i]pyrene and dibenzo[a,h]pyrene concentrations in coal fly ash particles have not previously been reported. Benzo[a]pyrene is the only one of the studied hydrocarbons whose concentration in the coal fly ash CRM had previously been certified. The concentration of this species measured in this present work was twice the certified value. This is probably because of the exhaustive accelerated solvent extraction method employed. Consecutive extractions indicated an extraction recovery in excess of 95% for benzo[a]pyrene. For the other determined PAHs, repeat extractions indicated recoveries above 90%.
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Affiliation(s)
- Silvia Masala
- Department of Analytical Chemistry, Stockholm University, 106 91 Stockholm, Sweden
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SINGH DP, GADI RANU, Mandal TK. Characterization of Gaseous and Particulate Polycyclic Aromatic Hydrocarbons in Ambient Air of Delhi, India. Polycycl Aromat Compd 2012. [DOI: 10.1080/10406638.2012.683230] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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