1
|
Hutchins M, Sweetman A, Barry C, Berg P, George C, Pickard A, Qu Y. MAKING WAVES: Effluent to estuary: Does sunshine or shade reduce downstream footprints of cities? Water Res 2023; 247:120815. [PMID: 37931359 DOI: 10.1016/j.watres.2023.120815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 09/09/2023] [Accepted: 10/29/2023] [Indexed: 11/08/2023]
Abstract
Riparian tree canopies are key components of river systems, and influence the provision of many essential ecosystem services. Their management provides the potential for substantial control of the downstream persistence of pollutants. The recent advent of new advances in mass spectrometry to detect a large suite of emerging contaminants, high-frequency observations of water quality and gas exchange (e.g., aquatic eddy covariance), and improved spatial resolution in remote sensing (e.g., hyperspectral measurements and high-resolution imagery), presents new opportunities to understand and more comprehensively quantify the role of riparian canopies as Nature-based Solutions. The paper outlines how we may now couple these advances in observational technologies with developments in water quality modelling to integrate simulation of eutrophication impacts with organic matter dynamics and fate of synthetic toxic compounds. In particular regarding solar radiation drivers, this enables us to scale-up new knowledge of canopy-mediated photodegradation processes at a basin level, and integrate it with ongoing improvements in understanding of thermal control, eutrophication, and ecosystem metabolism.
Collapse
Affiliation(s)
- Michael Hutchins
- UK Centre for Ecology & Hydrology, Crowmarsh Gifford, Wallingford OX10 8BB, UK; Department of Earth Sciences, Royal Holloway University of London, Egham Hill, Egham TW20 0EX, UK.
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Christopher Barry
- UK Centre for Ecology & Hydrology, Environment Centre Wales, Deiniol Road, Bangor LL57 2UW, UK
| | - Peter Berg
- Department of Environmental Sciences, University of Virginia, Charlottesville, VA 22908, USA
| | - Charles George
- UK Centre for Ecology & Hydrology, Crowmarsh Gifford, Wallingford OX10 8BB, UK
| | - Amy Pickard
- UK Centre for Ecology & Hydrology, Bush Estate, Penicuik, Edinburgh EH26 0QB, UK
| | - Yueming Qu
- UK Centre for Ecology & Hydrology, Crowmarsh Gifford, Wallingford OX10 8BB, UK
| |
Collapse
|
2
|
Melymuk L, Nizzetto PB, Harner T, White KB, Wang X, Tominaga MY, He J, Li J, Ma J, Ma WL, Aristizábal BH, Dreyer A, Jiménez B, Muñoz-Arnanz J, Odabasi M, Dumanoglu Y, Yaman B, Graf C, Sweetman A, Klánová J. Global intercomparison of polyurethane foam passive air samplers evaluating sources of variability in SVOC measurements. Environ Sci Policy 2021; 125:1-9. [PMID: 34733112 PMCID: PMC8525512 DOI: 10.1016/j.envsci.2021.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 07/14/2021] [Accepted: 08/03/2021] [Indexed: 05/07/2023]
Abstract
Polyurethane foam passive air samplers (PUF-PAS) are the most common type of passive air sampler used for a range of semi-volatile organic compounds (SVOCs), including regulated persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs), and emerging contaminants (e.g., novel flame retardants, phthalates, current-use pesticides). Data from PUF-PAS are key indicators of effectiveness of global regulatory actions on SVOCs, such as the Global Monitoring Plan of the Stockholm Convention on Persistent Organic Pollutants. While most PUF-PAS use similar double-dome metal shielding, there is no standardized dome size, shape, or deployment configuration, with many different PUF-PAS designs used in regional and global monitoring. Yet, no information is available on the comparability of data from studies using different PUF-PAS designs. We brought together 12 types of PUF-PAS used by different research groups around the world and deployed them in a multi-part intercomparison to evaluate the variability in reported concentrations introduced by different elements of PAS monitoring. PUF-PAS were deployed for 3 months in outdoor air in Kjeller, Norway in 2015-2016 in three phases to capture (1) the influence of sampler design on data comparability, (2) the influence of analytical variability when samplers are analyzed at different laboratories, and (3) the overall variability in global monitoring data introduced by differences in sampler configurations and analytical methods. Results indicate that while differences in sampler design (in particular, the spacing between the upper and lower sampler bowls) account for up to 50 % differences in masses collected by samplers, the variability introduced by analysis in different laboratories far exceeds this amount, resulting in differences spanning orders of magnitude for POPs and PAHs. The high level of variability due to analysis in different laboratories indicates that current SVOC air sampling data (i.e., not just for PUF-PAS but likely also for active air sampling) are not directly comparable between laboratories/monitoring programs. To support on-going efforts to mobilize more SVOC data to contribute to effectiveness evaluation, intercalibration exercises to account for uncertainties in air sampling, repeated at regular intervals, must be established to ensure analytical comparability and avoid biases in global-scale assessments of SVOCs in air caused by differences in laboratory performance.
Collapse
Affiliation(s)
- Lisa Melymuk
- RECETOX, Masaryk University, Brno, Czech Republic
- Corresponding author.
| | | | - Tom Harner
- Air Quality Processes Research Section, Environment and Climate Change Canada, Toronto, Canada
| | | | - Xianyu Wang
- Queensland Alliance for Environmental Health Sciences (QAEHS), The University of Queensland, Australia
| | | | - Jun He
- Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo, China
| | - Jun Li
- State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
| | - Jianmin Ma
- College of Urban and Environmental Sciences, Peking University, Beijing, China
| | - Wan-Li Ma
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), Harbin Institute of Technology, Harbin, China
| | - Beatriz H. Aristizábal
- Hydraulic Engineering and Environmental Research Group (GTAIHA), Universidad Nacional de Colombia, Manizales, Colombia
| | - Annekatrin Dreyer
- Eurofins GfA GmbH (Now Operating Under the Name ANECO Institut für Umweltschutz GmbH & Co), Germany
| | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, IQOG-CSIC, Madrid, Spain
| | - Juan Muñoz-Arnanz
- Department of Instrumental Analysis and Environmental Chemistry, IQOG-CSIC, Madrid, Spain
| | - Mustafa Odabasi
- Department of Environmental Engineering, Dokuz Eylul University, Buca-Izmir, Turkey
| | - Yetkin Dumanoglu
- Department of Environmental Engineering, Dokuz Eylul University, Buca-Izmir, Turkey
| | - Baris Yaman
- Department of Environmental Engineering, Dokuz Eylul University, Buca-Izmir, Turkey
| | - Carola Graf
- Lancaster Environment Centre, Lancaster University, UK
| | | | - Jana Klánová
- RECETOX, Masaryk University, Brno, Czech Republic
| |
Collapse
|
3
|
Yang J, Ma Y, Zhang X, Liao X, Yang Y, Sweetman A, Li H. The potential association of polybrominated diphenyl ether concentrations in serum to thyroid function in patients with abnormal thyroids: a pilot study. Ann Palliat Med 2021; 10:9192-9205. [PMID: 34488405 DOI: 10.21037/apm-21-1697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/19/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND To explore possible associations between polybrominated diphenyl ether (PBDE) exposure and patients with abnormal thyroid hormone levels whose thyroid function parameters are above normal ranges. METHODS The serum of 40 patients with thyroid hormone abnormalities was collected in Kunming. triiodothyronine (T3), thyroxine (T4), free triiodothyronine (FT3), free thyroxine (FT4), and thyroid-stimulating hormone (TSH) were detected in serum using chemiluminescence. The PBDE homologs in the patients' serum were quantitatively analyzed by gas chromatography-mass spectrometry. If the detection frequency of the compound exceeded 50%, it was included in the analysis. Spearman's rank correlation coefficient and multiple linear regression were used to evaluate the correlation between PBDE homologs and five thyroid function parameters. RESULTS A total of 33 PBDE homologs were detected, 7 of which had a more than 50% detection rate. BDE-47 was the main homolog detected. Spearman's correlation showed that no relationship was found between PBDE homologs and thyroid hormones. Multiple linear regression showed that BDE-153 was positively correlated with T4, negatively correlated with T3, while BDE-47 was negatively correlated with FT4 (P<0.05). The correlation between other PBDE homologs and thyroid function parameters was weak (P>0.05). The β coefficient showed that the increase in the logarithmic unit of ∑7PBDEs was related to an increase in FT4 and T4 levels and decreased TSH, T3, and FT3 levels. CONCLUSIONS There is a significant correlation between exposure to PBDE and thyroid dysfunction. The increase of total PBDEs was significantly correlated with the increase of FT4 and T4 levels and decreased TSH, T3, and FT3 levels.
Collapse
Affiliation(s)
- Jinyu Yang
- Shanghai Runda Rongjia Biotechnology Co., Ltd., Shanghai, China
| | - Yanchun Ma
- Department of Laboratory Medicine, Huashan Hospital North, Fudan University, Shanghai, China
| | - Xian Zhang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Xu Liao
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Yongfu Yang
- Department of Laboratory Medicine, Yan'an Hospital Cheng'gong, Kunming Medical University, Kunming, China
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Hong Li
- Lancaster Environment Centre, Lancaster University, Lancaster, UK; UK Centre for Ecology and Hydrology, Wallingford, Oxfordshire, UK
| |
Collapse
|
4
|
Liu G, Sweetman A, Chan SW, Altarawneh M. Toxicology and environmental chemistry of halogenated organic pollutants. Ecotoxicol Environ Saf 2021; 207:111573. [PMID: 33254421 DOI: 10.1016/j.ecoenv.2020.111573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Guorui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China; School of environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, PR China; College of Resource and Environment, University of Chinese Academy of Sciences, Beijing 100049, PR China.
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, LA1 4YQ, UK
| | - Simon Wan Chan
- Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Mohammednoor Altarawneh
- Department of Chemistry and Physics, Murdoch University, Westren Australia, Murdoch, WA 6150, Australia; Department of Chemical and Petroleum Engineering, United Arab Emirates University, Sheikh Khalifa bin Zayed Street, Al-Ain 15551, United Arab Emirates
| |
Collapse
|
5
|
Saini A, Harner T, Chinnadhurai S, Schuster JK, Yates A, Sweetman A, Aristizabal-Zuluaga BH, Jiménez B, Manzano CA, Gaga EO, Stevenson G, Falandysz J, Ma J, Miglioranza KSB, Kannan K, Tominaga M, Jariyasopit N, Rojas NY, Amador-Muñoz O, Sinha R, Alani R, Suresh R, Nishino T, Shoeib T. GAPS-megacities: A new global platform for investigating persistent organic pollutants and chemicals of emerging concern in urban air. Environ Pollut 2020; 267:115416. [PMID: 32854027 DOI: 10.1016/j.envpol.2020.115416] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/16/2020] [Accepted: 08/08/2020] [Indexed: 06/11/2023]
Abstract
A pilot study was initiated in 2018 under the Global Atmospheric Passive Sampling (GAPS) Network named GAPS-Megacities. This study included 20 megacities/major cities across the globe with the goal of better understanding and comparing ambient air levels of persistent organic pollutants and other chemicals of emerging concern, to which humans residing in large cities are exposed. The first results from the initial period of sampling are reported for 19 cities for several classes of flame retardants (FRs) including organophosphate esters (OPEs), polybrominated diphenyl ethers (PBDEs), and halogenated flame retardants (HFRs) including new flame retardants (NFRs), tetrabromobisphenol A (TBBPA) and hexabromocyclododecane (HBCDD). The two cities, New York (USA) and London (UK) stood out with ∼3.5 to 30 times higher total FR concentrations as compared to other major cities, with total concentrations of OPEs of 15,100 and 14,100 pg/m3, respectively. Atmospheric concentrations of OPEs significantly dominated the FR profile at all sites, with total concentrations in air that were 2-5 orders of magnitude higher compared to other targeted chemical classes. A moderately strong and significant correlation (r = 0.625, p < 0.001) was observed for Gross Domestic Product index of the cities with total OPEs levels. Although large differences in FR levels were observed between some cities, when averaged across the five United Nations regions, the FR classes were more evenly distributed and varied by less than a factor of five. Results for Toronto, which is a 'reference city' for this study, agreed well with a more in-depth investigation of the level of FRs over different seasons and across eight sites representing different urban source sectors (e.g. traffic, industrial, residential and background). Future sampling periods under this project will investigate trace metals and other contaminant classes, linkages to toxicology, non-targeted analysis, and eventually temporal trends. The study provides a unique urban platform for evaluating global exposome.
Collapse
Affiliation(s)
- Amandeep Saini
- Air Quality Processes Research Section, Environment and Climate Change Canada, 4905 Dufferin Street, Toronto, M3H5T4, Canada.
| | - Tom Harner
- Air Quality Processes Research Section, Environment and Climate Change Canada, 4905 Dufferin Street, Toronto, M3H5T4, Canada
| | - Sita Chinnadhurai
- Air Quality Processes Research Section, Environment and Climate Change Canada, 4905 Dufferin Street, Toronto, M3H5T4, Canada
| | - Jasmin K Schuster
- Air Quality Processes Research Section, Environment and Climate Change Canada, 4905 Dufferin Street, Toronto, M3H5T4, Canada
| | - Alan Yates
- Australian Ultra-Trace Laboratory, National Measurement Institute, North Ryde, NSW, 2113, Australia
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster, K LA1 4YQ, United Kingdom
| | | | - Begoña Jiménez
- Department of Instrumental Analysis and Environmental Chemistry, Institute of Organic Chemistry, IQOG-CSIC, 28006, Madrid, Spain
| | - Carlos A Manzano
- Department of Chemistry, Faculty of Science, University of Chile, Las Palmeras, 3425, Santiago, Chile
| | - Eftade O Gaga
- Department of Environmental Engineering, Eskişehir Technical University, 26555, Eskişehir, Turkey
| | - Gavin Stevenson
- Australian Ultra-Trace Laboratory, National Measurement Institute, North Ryde, NSW, 2113, Australia
| | - Jerzy Falandysz
- University of Gdańsk, Environmental Chemistry and Ecotoxicology, 80-308, Gdańsk, Poland
| | - Jianmin Ma
- College of Urban and Environmental Science, Peking University, Beijing, 100871, China
| | | | - Kurunthachalam Kannan
- Department of Pediatrics and Department of Environmental Medicine, New York University School of Medicine, New York, NY, 10016, United States
| | - Maria Tominaga
- Sao Paulo State Environmental Company, Av. Prof. Frederico Hermann Jr, 345, São Paulo, Brazil
| | - Narumol Jariyasopit
- Siriraj Metabolomics and Phenomics Center, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
| | | | - Omar Amador-Muñoz
- Centro de Ciencias de la Atmósfera, Universidad Nacional Autónoma de México, 04510, Mexico City, Mexico
| | - Ravindra Sinha
- IJRC-PTS, Department of Zoology, Patna University, Patna, 800 005, Bihar, India
| | - Rose Alani
- Department of Chemistry, Faculty of Science, University of Lagos, Lagos, Nigeria
| | - R Suresh
- Centre for Environmental Studies, The Energy and Resources Institute, Indian Habitat Centre, New Delhi, 110003, India
| | - Takahiro Nishino
- Tokyo Metropolitan Research Institute for Environmental Protection 1-7-5, Sinsuna Koto-ku, Tokyo, Japan
| | - Tamer Shoeib
- Department of Chemistry, The American University in Cairo, New Cairo, 11835, Egypt
| |
Collapse
|
6
|
Goodman JE, Prueitt RL, Boffetta P, Halsall C, Sweetman A. "Good Epidemiology Practice" Guidelines for Pesticide Exposure Assessment. Int J Environ Res Public Health 2020; 17:E5114. [PMID: 32679916 PMCID: PMC7400458 DOI: 10.3390/ijerph17145114] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 01/07/2023]
Abstract
Both toxicology and epidemiology are used to inform hazard and risk assessment in regulatory settings, particularly for pesticides. While toxicology studies involve controlled, quantifiable exposures that are often administered according to standardized protocols, estimating exposure in observational epidemiology studies is challenging, and there is no established guidance for doing so. However, there are several frameworks for evaluating the quality of published epidemiology studies. We previously developed a preliminary list of methodology and reporting standards for epidemiology studies, called Good Epidemiology Practice (GEP) guidelines, based on a critical review of standardized toxicology protocols and available frameworks for evaluating epidemiology study quality. We determined that exposure characterization is one of the most critical areas for which standards are needed. Here, we propose GEP guidelines for pesticide exposure assessment based on the source of exposure data (i.e., biomonitoring and environmental samples, questionnaire/interview/expert record review, and dietary exposures based on measurements of residues in food and food consumption). It is expected that these GEP guidelines will facilitate the conduct of higher-quality epidemiology studies that can be used as a basis for more scientifically sound regulatory risk assessment and policy making.
Collapse
Affiliation(s)
| | - Robyn L. Prueitt
- Gradient, 600 Stewart Street, Suite 1900, Seattle, WA 98101, USA;
| | - Paolo Boffetta
- Stony Brook Cancer Center, Department of Family, Population and Preventive Medicine, Stony Brook University, Stony Brook, NY 11794, USA;
- Department of Medical and Surgical Sciences, University of Bologna, 40126 Bologna, Italy
| | - Crispin Halsall
- Lancaster Environment Center, Lancaster University, Lancaster LA1 4YQ, UK; (C.H.); (A.S.)
| | - Andrew Sweetman
- Lancaster Environment Center, Lancaster University, Lancaster LA1 4YQ, UK; (C.H.); (A.S.)
| |
Collapse
|
7
|
Lei K, Lin CY, Zhu Y, Chen W, Pan HY, Sun Z, Sweetman A, Zhang Q, He MC. Estrogens in municipal wastewater and receiving waters in the Beijing-Tianjin-Hebei region, China: Occurrence and risk assessment of mixtures. J Hazard Mater 2020; 389:121891. [PMID: 31882338 DOI: 10.1016/j.jhazmat.2019.121891] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/11/2019] [Accepted: 12/12/2019] [Indexed: 06/10/2023]
Abstract
The potentially high release of estrogens to surface waters due to high population density and local livestock production in the Beijing-Tianjin-Hebei region may pose adverse effects on reproductive systems of aquatic organisms. This study found that total measured concentrations of estrone (E1), 17β-estradiol (E2), estriol (E3), 17α-ethinylestradiol (EE2) and diethylstilbestrol (DES) were 468 ± 27 ng/L in treated wastewater and 219 ± 23 ng/L in river waters in this region. E2, E3 and EE2 were the predominant estrogens in river waters. The restriction of DES for human use should have been enforced, however concentrations of DES were relatively high compared to other studies. Haihe and Yongdingxin Rivers delivered approximately 1.8 tonnes of estrogens to the Bohai Bay annually. Concentrations of individual estrogens were significantly higher in river waters in the dry season, however, mass loadings were significantly higher in the wet season. The average E2-equivalent concentrations reached 1.2 ± 0.2 and 0.64 ± 0.08 μg-E2/L following long-term and short-term exposure estimates, respectively, in river waters with an EE2 contribution of over 90 %. This could give rise to high risks to fish. Estrogens in river waters largely derived from human excretion. Field studies on estrogenic effects on fish reproductive systems are required locally considering high estrogen contamination levels.
Collapse
Affiliation(s)
- Kai Lei
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Chun-Ye Lin
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Ying Zhu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom.
| | - Wei Chen
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom; School of Environmental Studies & State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, People's Republic of China
| | - Hui-Yun Pan
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo Henan 454000, People's Republic of China
| | - Zhe Sun
- Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge CB1 8RN, United Kingdom
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Qinghua Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, People's Republic of China
| | - Meng-Chang He
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
| |
Collapse
|
8
|
Moeckel C, Breivik K, Nøst TH, Sankoh A, Jones KC, Sweetman A. Soil pollution at a major West African E-waste recycling site: Contamination pathways and implications for potential mitigation strategies. Environ Int 2020; 137:105563. [PMID: 32106045 DOI: 10.1016/j.envint.2020.105563] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 02/03/2020] [Accepted: 02/09/2020] [Indexed: 05/22/2023]
Abstract
Organic contaminants (polycyclic aromatic hydrocarbons (PAHs), polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), and chlorinated paraffins (CPs)) and heavy metals and metalloids (Ag, Cd, Co, Cr, Cu, Hg, Ni, Pb, Sb, Zn) were analysed in surface soil samples from the Agbogbloshie e-waste processing and dumping site in Accra (Ghana). In order to identify which of the pollutants are likely to be linked specifically to handling of e-waste, samples were also collected from the Kingtom general waste site in Freetown (Sierra Leone). The results were compared using principal component analyses (PCA). PBDE congeners found in technical octa-BDE mixtures, highly chlorinated PCBs and several heavy metals (Cu, Pb, Ni, Cd, Ag and Hg) showed elevated concentrations in the soils that are likely due to contamination by e-waste. PCAs associated those compounds with pyrogenic PAHs, suggesting that burning of e-waste, a common practice to isolate valuable metals, may cause this contamination. Moreover, other contamination pathways, especially incorporation of waste fragments into the soil, also appeared to play an important role in determining concentrations of some of the pollutants in the soil. Concentrations of several of these compounds were extremely high (especially PBDEs, heavy metals and SCCPs) and in some cases exceeded action guideline levels for soil. This indicates that exposure to these contaminants via the soil alone is potentially harmful to the recyclers and their families living on waste sites. Many organic contaminants and other exposure pathways such as inhalation are not yet included in such guidelines but may also be significant, given that deposition from the air following waste burning was identified as a major pollutant source.
Collapse
Affiliation(s)
- Claudia Moeckel
- NILU - Norwegian Institute for Air Research, 2007 Kjeller, Norway; Stockholm University, 11418 Stockholm, Sweden.
| | - Knut Breivik
- NILU - Norwegian Institute for Air Research, 2007 Kjeller, Norway; University of Oslo, 0351 Oslo, Norway
| | - Therese Haugdahl Nøst
- NILU - Norwegian Institute for Air Research, 2007 Kjeller, Norway; The Arctic University of Norway, 9019 Tromsø, Norway
| | - Alhaji Sankoh
- Njala University, Njala, Moyamba District, Sierra Leone
| | - Kevin C Jones
- Lancaster Environment Centre, Library Avenue, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Andrew Sweetman
- Lancaster Environment Centre, Library Avenue, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| |
Collapse
|
9
|
Sweetman A, Catcheside P, Lack L, Antic N, Smith S, Chai-Coetzer C, Douglas J, O'Grady M, Dunn N, Robinson J, Paul D, McEvoy D. The effect of cognitive and behavioural therapy for insomnia on changes in sleep architecture and AHI in patients with co-occurring insomnia and sleep apnea. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
10
|
Sweetman A, Lack L, Catcheside P, Antic N, Smith S, Chai-Coetzer C, Douglas J, O'Grady M, Dunn N, Robinson J, Paul D, McEvoy D. Changes in initial, middle and late insomnia subtypes during CBT-i and cpap therapy in co-morbid insomnia and sleep apnea (COMISA). Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
11
|
Song S, Lu Y, Wang T, Zhang S, Sweetman A, Baninla Y, Shi Y, Liu Z, Meng J, Geng J. Urban-rural gradients of polycyclic aromatic hydrocarbons in soils at a regional scale: Quantification and prediction. J Environ Manage 2019; 249:109406. [PMID: 31450195 DOI: 10.1016/j.jenvman.2019.109406] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 08/12/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
The quantitative study of urban-rural gradients for persistent organic pollutants (POPs) is extremely important to understand the behavior of POPs as well as for ecological risk assessment and management. In this study, a practical urban-rural gradient model (URGM) was developed using atmospheric point source diffusion combined with a fugacity approach to test potential mathematical relationships among urban and rural soils. The mean value of polycyclic aromatic hydrocarbons (PAHs) for urban soils (0-2-km sites) was 570.80 ng/g, and was approximately 3.5 times higher than rural soils (30-50 km sites). Significant linear correlations were found between the amounts of PAHs in the surface soil and the city population and between the soil concentration and artificial surface area. Urban-rural PAH concentrations were simulated by the URGM and calibrated by city population and land-cover data, with average relative errors of 12.84%. The results showed that the URGM was suitable for simulating urban-rural PAH concentrations at a regional scale. The combustion of fossil fuels, biomass, and coal was the main source of soil PAHs in the study area, and the characteristic ratios of PAHs indicated a transition trend from pyrogenic to petrogenic sources along the urban-rural transects. This study thus provides a combined method for quantifying urban-rural gradients of PAHs and can thereby promote quantitative research on coupling among land cover, socio-economic data, and POP concentrations.
Collapse
Affiliation(s)
- Shuai Song
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yonglong Lu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Tieyu Wang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Sheng Zhang
- School of Environmental & Natural Resources, Renmin University of China, Beijing, 100872, China
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster, LA1 4YQ, United Kingdom
| | - Yvette Baninla
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yajuan Shi
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Zhaoyang Liu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jing Meng
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Jing Geng
- University of Sanya, Sanya, 572000, China
| |
Collapse
|
12
|
Zhu Y, Snape J, Jones K, Sweetman A. Spatially Explicit Large-Scale Environmental Risk Assessment of Pharmaceuticals in Surface Water in China. Environ Sci Technol 2019; 53:2559-2569. [PMID: 30758963 DOI: 10.1021/acs.est.8b07054] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
With improving healthcare and an aging population, the consumption of human pharmaceuticals in China has been increasing dramatically. Environmental risks posed by many active pharmaceutical ingredients (APIs) are still unknown. This study used a spatially explicit dilution-factor methodology to model predicted environmental concentrations (PECs) of 11 human-use APIs in surface water for a preliminary environmental risk assessment (ERA). Median PECs in surface water across China range between 0.01 and 8.0 × 103 ng/L for the different APIs, under a moderate patient use scenario. Higher environmental risks of APIs in surface water are in regions with high water stress, e.g., northern China. Levonorgestrel, estradiol, ethinyl estradiol and abiraterone acetate were predicted to potentially pose a high or moderate environmental risk in China if consumption levels reach those in Europe. Relative risks of these four APIs have the potential to be among those chemicals with the highest impact on surface water in China when compared to the risks associated with other regulated chemicals, including triclosan and some standard water quality parameters including BOD5 (5-day biological oxygen demand), COD (chemical oxygen demand), Cu, Zn, and Hg and linear alkylbenzene sulfonate. This method could support the regulation of this category of chemicals and risk mitigation strategies in China.
Collapse
Affiliation(s)
- Ying Zhu
- Lancaster Environment Centre , Lancaster University , Lancaster LA1 4YQ , United Kingdom
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 100085 , P. R. China
| | - Jason Snape
- AstraZeneca , Global Safety, Health and Environment , Alderley Park, Macclesfield SK10 4TG , United Kingdom
- School of Life Sciences, Gibbet Hill Campus , The University of Warwick , Coventry CV4 7AL , United Kingdom
| | - Kevin Jones
- Lancaster Environment Centre , Lancaster University , Lancaster LA1 4YQ , United Kingdom
| | - Andrew Sweetman
- Lancaster Environment Centre , Lancaster University , Lancaster LA1 4YQ , United Kingdom
| |
Collapse
|
13
|
Brown A, Hauton C, Stratmann T, Sweetman A, van Oevelen D, Jones DOB. Metabolic rates are significantly lower in abyssal Holothuroidea than in shallow-water Holothuroidea. R Soc Open Sci 2018; 5:172162. [PMID: 29892403 PMCID: PMC5990736 DOI: 10.1098/rsos.172162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 04/23/2018] [Indexed: 06/08/2023]
Abstract
Recent analyses of metabolic rates in fishes, echinoderms, crustaceans and cephalopods have concluded that bathymetric declines in temperature- and mass-normalized metabolic rate do not result from resource-limitation (e.g. oxygen or food/chemical energy), decreasing temperature or increasing hydrostatic pressure. Instead, based on contrasting bathymetric patterns reported in the metabolic rates of visual and non-visual taxa, declining metabolic rate with depth is proposed to result from relaxation of selection for high locomotory capacity in visual predators as light diminishes. Here, we present metabolic rates of Holothuroidea, a non-visual benthic and benthopelagic echinoderm class, determined in situ at abyssal depths (greater than 4000 m depth). Mean temperature- and mass-normalized metabolic rate did not differ significantly between shallow-water (less than 200 m depth) and bathyal (200-4000 m depth) holothurians, but was significantly lower in abyssal (greater than 4000 m depth) holothurians than in shallow-water holothurians. These results support the dominance of the visual interactions hypothesis at bathyal depths, but indicate that ecological or evolutionary pressures other than biotic visual interactions contribute to bathymetric variation in holothurian metabolic rates. Multiple nonlinear regression assuming power or exponential models indicates that in situ hydrostatic pressure and/or food/chemical energy availability are responsible for variation in holothurian metabolic rates. Consequently, these results have implications for modelling deep-sea energetics and processes.
Collapse
Affiliation(s)
- Alastair Brown
- Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, European Way, Southampton SO14 3ZH, UK
| | - Chris Hauton
- Ocean and Earth Science, University of Southampton, National Oceanography Centre Southampton, European Way, Southampton SO14 3ZH, UK
| | - Tanja Stratmann
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ-Yerseke), and Utrecht University, PO Box 140, 4400 AC Yerseke, The Netherlands
| | - Andrew Sweetman
- The Sir Charles Lyell Centre for Earth and Marine Science and Technology, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - Dick van Oevelen
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ-Yerseke), and Utrecht University, PO Box 140, 4400 AC Yerseke, The Netherlands
| | - Daniel O. B. Jones
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton SO14 3ZH, UK
| |
Collapse
|
14
|
Johnson AC, Jürgens MD, Su C, Zhang M, Zhang Y, Shi Y, Sweetman A, Jin X, Lu Y. Which commonly monitored chemical contaminant in the Bohai region and the Yangtze and Pearl Rivers of China poses the greatest threat to aquatic wildlife? Environ Toxicol Chem 2018; 37:1115-1121. [PMID: 29149472 DOI: 10.1002/etc.4042] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 10/21/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
The present study assessed the relative risk of 29 chemical contaminants to aquatic wildlife in the Bohai region and the Yangtze and Pearl Rivers of China. River monitoring data from 2010 to 2015 for metals, pesticides, plasticizers, surfactants, polyaromatic hydrocarbons, flame retardants, and ammonia were collected. For each chemical, ecotoxicity data were compiled for Chinese-relevant aquatic species. The chemicals were ranked by relative risk either by comparing the ratios of the median river concentration divided by the median ecotoxicity concentration or by the percentage of river measurements which exceeded the lower 10th percentile ecotoxicity value. To provide context, these results were compared with the same analysis for rivers in the United Kingdom. From this collection of chemicals in Chinese rivers, the highest risks appear to be from Cu, closely followed by Zn, Fe, and Ni together with linear alkyl benzene sulfonate, nonylphenol, and NH3 . This risk, particularly from the metals, can be several times higher than that experienced in UK rivers when using the same analysis. Ammonia median concentrations were notably higher in the Pearl and Yangtze than in UK rivers. The results suggest that China should focus on controlling metal contamination to protect its aquatic wildlife. Environ Toxicol Chem 2018;37:1115-1121. © 2017 SETAC.
Collapse
Affiliation(s)
- Andrew C Johnson
- Centre for Ecology & Hydrology, Crowmarsh Gifford Wallingford, Oxon, United Kingdom
| | - Monika D Jürgens
- Centre for Ecology & Hydrology, Crowmarsh Gifford Wallingford, Oxon, United Kingdom
| | - Chao Su
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Meng Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yueqing Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yajuan Shi
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster, United Kingdom
| | - Xiaowei Jin
- China National Environmental Monitoring Center, Beijing, China
| | - Yonglong Lu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
15
|
Fick J, Brodin T, Heynen M, Klaminder J, Jonsson M, Grabicova K, Randak T, Grabic R, Kodes V, Slobodnik J, Sweetman A, Earnshaw M, Barra Caracciolo A, Lettieri T, Loos R. Screening of benzodiazepines in thirty European rivers. Chemosphere 2017; 176:324-332. [PMID: 28273540 DOI: 10.1016/j.chemosphere.2017.02.126] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 02/22/2017] [Accepted: 02/24/2017] [Indexed: 05/14/2023]
Abstract
Pharmaceuticals as environmental contaminants have received a lot of interest over the past decade but, for several pharmaceuticals, relatively little is known about their occurrence in European surface waters. Benzodiazepines, a class of pharmaceuticals with anxiolytic properties, have received interest due to their behavioral modifying effect on exposed biota. In this study, our results show the presence of one or more benzodiazepine(s) in 86% of the analyzed surface water samples (n = 138) from 30 rivers, representing seven larger European catchments. Of the 13 benzodiazepines included in the study, we detected 9, which together showed median and mean concentrations (of the results above limit of quantification) of 5.4 and 9.6 ng L-1, respectively. Four benzodiazepines (oxazepam, temazepam, clobazam, and bromazepam) were the most commonly detected. In particular, oxazepam had the highest frequency of detection (85%) and a maximum concentration of 61 ng L-1. Temazepam and clobazam were found in 26% (maximum concentration of 39 ng L-1) and 14% (maximum concentration of 11 ng L-1) of the samples analyzed, respectively. Finally, bromazepam was found only in Germany and in 16 out of total 138 samples (12%), with a maximum concentration of 320 ng L-1. This study clearly shows that benzodiazepines are common micro-contaminants of the largest European river systems at ng L-1 levels. Although these concentrations are more than a magnitude lower than those reported to have effective effects on exposed biota, environmental effects cannot be excluded considering the possibility of additive and sub-lethal effects.
Collapse
Affiliation(s)
- Jerker Fick
- Department of Chemistry, Umeå University, Sweden.
| | - Tomas Brodin
- Department of Ecology and Environmental Science, Umeå University, Sweden
| | - Martina Heynen
- Department of Ecology and Environmental Science, Umeå University, Sweden
| | - Jonatan Klaminder
- Department of Ecology and Environmental Science, Umeå University, Sweden
| | - Micael Jonsson
- Department of Ecology and Environmental Science, Umeå University, Sweden
| | - Katerina Grabicova
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czechia
| | - Tomas Randak
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czechia
| | - Roman Grabic
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Czechia
| | - Vit Kodes
- Czech Hydrometeorological Institute, Prague, Czechia
| | | | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | - Mark Earnshaw
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | - Teresa Lettieri
- European Commission, Joint Research Centre (JRC), Directorate D - Sustainable Resources, Water and Marine Resources, Ispra, Italy
| | - Robert Loos
- European Commission, Joint Research Centre (JRC), Directorate D - Sustainable Resources, Water and Marine Resources, Ispra, Italy
| |
Collapse
|
16
|
Lack LC, Sweetman A, Lambert S, Harris J. 0370 IMPACT OF CO-MORBID OBSTRUCTIVE SLEEP APNEA IN THE TREATMENT OF INSOMNIA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
17
|
Sweetman A, Lack LC, Smith SS, Catcheside PG, Antic NA, Chai-Coetzer C, Douglas JA, O’Grady A, Dunn N, Robinson J, McEvoy D. 0340 EFFECTIVENESS OF COGNITIVE BEHAVIORAL THERAPY FOR INSOMNIA IN PATIENTS WITH COMORBID OBSTRUCTIVE SLEEP APNEA. Sleep 2017. [DOI: 10.1093/sleepj/zsx050.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
18
|
Su H, Shi Y, Lu Y, Wang P, Zhang M, Sweetman A, Jones K, Johnson A. Home produced eggs: An important pathway of human exposure to perfluorobutanoic acid (PFBA) and perfluorooctanoic acid (PFOA) around a fluorochemical industrial park in China. Environ Int 2017; 101:1-6. [PMID: 28135695 DOI: 10.1016/j.envint.2017.01.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 01/19/2017] [Accepted: 01/21/2017] [Indexed: 06/06/2023]
Abstract
Dietary intake is considered to be a major pathway of human exposure to perfluoroalkyl acids (PFAAs). Chicken egg is an important contributor to the Chinese diet. In the present study, PFAAs in home produced eggs (HPEs) and commercially produced eggs (CPEs) surrounding a fluorochemical industrial park (FIP) in China were investigated. PFAAs in HPEs decreased with increasing distance from the FIP. HPEs were much more contaminated than CPEs, with PFAAs in CPEs comparable to or lower than those in HPEs from 20km away from the FIP. PFOA concentrations in HPEs were higher than the levels of PFOA in eggs from other studies reported so far. For the first time, PFBA was reported in eggs and detected in all egg samples. PFOA and PFBA were the predominant forms in HPEs, while PFOA, PFBA and PFOS dominated in CPEs. For PFOA, estimated daily intakes (EDI) were 233ng/kg·bw/day for adults and 657ng/kg·bw/day for children who consume HPEs at households about 2km away from the FIP. The EDI of PFOA for children via HPEs exceeded the reference dose value (333ng/kg·bw/day) proposed by the Environmental Working Group.
Collapse
Affiliation(s)
- Hongqiao Su
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yajuan Shi
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yonglong Lu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Pei Wang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Meng Zhang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Andrew Sweetman
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK; Centre for Ecology & Hydrology, Wallingford, OX 10 8BB, UK
| | - Kevin Jones
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Andrew Johnson
- Centre for Ecology & Hydrology, Wallingford, OX 10 8BB, UK
| |
Collapse
|
19
|
Sweetman A, Lekkas I, Moriarty P. Mechano-chemical manipulation of Sn chains on Si(1 0 0) by NC-AFM. J Phys Condens Matter 2017; 29:074003. [PMID: 28035086 DOI: 10.1088/1361-648x/29/7/074003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigate the atomic structure of Sn dimer chains grown on the Si(1 0 0) surface using non-contact atomic force microscopy (NC-AFM) at cryogenic temperatures. We find that similar to the native Si(1 0 0) dimer structure, the ground state of the Sn dimer structure is buckled at low temperature. At 5 K we show that the buckling state of the Sn dimers may be controllably, and reversibly, manipulated with atomic precision by close approach of the tip, without modification of the underlying substrate buckling structure. At intermediate cryogenic temperatures we observe changes in the configuration of the dimer chains in the region where the tip-sample interaction is very weak, suggesting that the energy barrier to transit between configurations is sufficiently small to be surmounted at 78 K.
Collapse
|
20
|
Shi Y, Wang R, Lu Y, Song S, Johnson AC, Sweetman A, Jones K. Regional multi-compartment ecological risk assessment: Establishing cadmium pollution risk in the northern Bohai Rim, China. Environ Int 2016; 94:283-291. [PMID: 27286039 DOI: 10.1016/j.envint.2016.05.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 05/17/2016] [Accepted: 05/23/2016] [Indexed: 06/06/2023]
Abstract
Ecological risk assessment (ERA) has been widely applied in characterizing the risk of chemicals to organisms and ecosystems. The paucity of toxicity data on local biota living in the different compartments of an ecosystem and the absence of a suitable methodology for multi-compartment spatial risk assessment at the regional scale has held back this field. The major objective of this study was to develop a methodology to quantify and distinguish the spatial distribution of risk to ecosystems at a regional scale. A framework for regional multi-compartment probabilistic ecological risk assessment (RMPERA) was constructed and corroborated using a bioassay of a local species. The risks from cadmium (Cd) pollution in river water, river sediment, coastal water, coastal surface sediment and soil in northern Bohai Rim were examined. The results indicated that the local organisms in soil, river, coastal water, and coastal sediment were affected by Cd. The greatest impacts from Cd were identified in the Tianjin and Huludao areas. The overall multi-compartment risk was 31.4% in the region. The methodology provides a new approach for regional multi-compartment ecological risk assessment.
Collapse
Affiliation(s)
- Yajuan Shi
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Ruoshi Wang
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yonglong Lu
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Shuai Song
- State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Andrew C Johnson
- Centre for Ecology & Hydrology, Maclean Building, Crowmarsh Gifford Wallingford, Oxon, OX 10 8BB, UK
| | - Andrew Sweetman
- Centre for Ecology & Hydrology, Maclean Building, Crowmarsh Gifford Wallingford, Oxon, OX 10 8BB, UK; Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| | - Kevin Jones
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK
| |
Collapse
|
21
|
Roots O, Lukki T, Přibylová P, Borůvková J, Kukučka P, Audy O, Kalina J, Klánová J, Holoubek I, Sweetman A, Schleicher O. Measurements of persistent organic pollutants in Estonian ambient air (1990–2013). Proc Estonian Acad Sci 2015. [DOI: 10.3176/proc.2015.2.07] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
22
|
Sweetman A, Danza R, Gangopadhyay S, Moriarty P. Imaging and manipulation of the Si(100) surface by small-amplitude NC-AFM at zero and very low applied bias. J Phys Condens Matter 2012; 24:084009. [PMID: 22310449 DOI: 10.1088/0953-8984/24/8/084009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We use a noncontact atomic force microscope in the qPlus configuration to investigate the structure and influence of defects on the Si(100) surface. By applying millivolt biases, simultaneous tunnel current data is acquired, providing information about the electronic properties of the surface at biases often inaccessible during conventional STM imaging, and highlighting the difference between the contrast observed in NC-AFM and tunnel current images. We also show how NC-AFM (in the absence of tunnel current) can be used to manipulate both the clean c(4 × 2) surface and dopant-related defects.
Collapse
Affiliation(s)
- A Sweetman
- School of Physics and Astronomy, University of Nottingham, Nottingham, UK.
| | | | | | | |
Collapse
|
23
|
Hollander A, Scheringer M, Shatalov V, Mantseva E, Sweetman A, Roemer M, Baart A, Suzuki N, Wegmann F, van de Meent D. Estimating overall persistence and long-range transport potential of persistent organic pollutants: a comparison of seven multimedia mass balance models and atmospheric transport models. ACTA ACUST UNITED AC 2008; 10:1139-47. [DOI: 10.1039/b803760d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Shafi S, Sweetman A, Hough RL, Smith R, Rosevear A, Pollard SJT. Evaluating fugacity models for trace components in landfill gas. Environ Pollut 2006; 144:1013-23. [PMID: 16603294 DOI: 10.1016/j.envpol.2006.01.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2006] [Accepted: 01/15/2006] [Indexed: 05/08/2023]
Abstract
A fugacity approach was evaluated to reconcile loadings of vinyl chloride (chloroethene), benzene, 1,3-butadiene and trichloroethylene in waste with concentrations observed in landfill gas monitoring studies. An evaluative environment derived from fictitious but realistic properties such as volume, composition, and temperature, constructed with data from the Brogborough landfill (UK) test cells was used to test a fugacity approach to generating the source term for use in landfill gas risk assessment models (e.g. GasSim). SOILVE, a dynamic Level II model adapted here for landfills, showed greatest utility for benzene and 1,3-butadiene, modelled under anaerobic conditions over a 10 year simulation. Modelled concentrations of these components (95,300 microg m(-3); 43 microg m(-3)) fell within measured ranges observed in gas from landfills (24,300-180,000 microg m(-3); 20-70 microg m(-3)). This study highlights the need (i) for representative and time-referenced biotransformation data; (ii) to evaluate the partitioning characteristics of organic matter within waste systems and (iii) for a better understanding of the role that gas extraction rate (flux) plays in producing trace component concentrations in landfill gas.
Collapse
Affiliation(s)
- Sophie Shafi
- Integrated Waste Management Centre, Sustainable Systems Department, Building 61, School of Industrial and Manufacturing Science, Cranfield University, Cranfield, Bedfordshire MK43 0AL, UK
| | | | | | | | | | | |
Collapse
|
25
|
Farrar NJ, Harner T, Shoeib M, Sweetman A, Jones KC. Field deployment of thin film passive air samplers for persistent organic pollutants: a study in the urban atmospheric boundary layer. Environ Sci Technol 2005; 39:42-48. [PMID: 15667073 DOI: 10.1021/es048907a] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper reports on the first field deployment of rapidly equilibrating thin-film passive air samplers under ambient conditions. The POlymer-coated Glass (POG) samplers have a coating of ethylene vinyl acetate (EVA) less than 1 microm thick applied to a glass surface. This can be dissolved off after exposure and prepared for the quantification of persistent organic pollutants (POPs) that have partitioned into the film during field exposure. In this study, POGs were deployed at various heights on the CN Tower in Toronto, Canada, to investigate the vertical distribution of selected compounds (PCBs, PAHs, organochlorine pesticides) in the atmospheric boundary layer of an urban area. The feasibility of the method to detect POPs from a few cubic meters of air was demonstrated, indicating the potential for rapid, low-volume sampling of air for ambient levels of POPs. PAH levels declined sharply with height, confirming ground-level emissions in urban areas as sources of these compounds; PCBs did the same, although less strongly. Different sampling events detected different vertical distributions of OC pesticides which could be related to local or distantsources, and variations in POPs on the samplers in these different events/heights demonstrate the dynamic nature of sources and atmospheric mixing of POPs.
Collapse
Affiliation(s)
- N J Farrar
- Environmental Science Department, Institute of Environmental and Natural Sciences, Lancaster University, Lancaster LA1 4YQ, UK
| | | | | | | | | |
Collapse
|
26
|
|
27
|
Meijer SN, Ockenden WA, Sweetman A, Breivik K, Grimalt JO, Jones KC. Global distribution and budget of PCBs and HCB in background surface soils: implications for sources and environmental processes. Environ Sci Technol 2003; 37:667-672. [PMID: 12636263 DOI: 10.1021/es025809l] [Citation(s) in RCA: 348] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This paper presents data from a survey of polychlorinated biphenyls (PCBs) and hexachlorobenzene (HCB) concentrations in 191 global background surface (0-5 cm) soils. Differences of up to 4 orders of magnitude were found between sites for PCBs. The lowest and highest PCB concentrations (26 and 97,000 pg/g dw) were found in samples from Greenland and mainland Europe (France, Germany, Poland), respectively. Background soil PCB concentrations were strongly influenced by proximity to source region and soil organic matter (SOM) content Most (>80%) of the estimated soil PCB burden remains in the "global source region" of the Northern Hemisphere (NH) temperate latitudes (30-60 degrees N) or in the OM-rich soils just north of that %SOM correlated with PCB and HCB in the global data set, with the correlation coefficients being greater for HCB and the lighter PCBs than for heavier homologues. OM-rich soils in the NH consistently contained the highest burdens; such soils are a key global compartment for these compounds. Evidence for global fractionation of PCBs was found in the subset of soils from latitudes north of the global source region but was not discerned with the global data set The full data set was used to estimate the burden for individual congeners/homologues in surface background soils and a global soil total PCB burden of 21,000 t. The significance of the inventory is briefly discussed in relation to the latest estimates of global production and atmospheric emission.
Collapse
Affiliation(s)
- S N Meijer
- Environmental Science Department, Institute of Environmental and Natural Sciences, Lancaster University, Lancaster LA1 4YQ, UK
| | | | | | | | | | | |
Collapse
|
28
|
Alcock RE, Sweetman A, Jones KC. Assessment of organic contaminant fate in waste water treatment plants. I: Selected compounds and physicochemical properties. Chemosphere 1999; 38:2247-2262. [PMID: 10101865 DOI: 10.1016/s0045-6535(98)00444-5] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An extensive and comprehensive literature review has been conducted for compounds which we hypothesise could be present in sludge and maintain their integrity following application to agricultural land. The following compounds have been selected for review; chlorinated paraffins, quintozene, brominated diphenyl ethers, polychlorinated naphthalenes, polydimethylsiloxanes, chloronitrobenzenes, and a range of biologically active and pharmaceutical compounds. All have received interest as a result of their persistence and/or toxicity in environmental media. Physicochemical property information has also been compiled and/or calculated. In this way, an accompanying paper will attempt to predict compound fate in waste water treatment plants (WWTPs) and assess likely transfers from soil/plants to grazing livestock. These papers describe a first attempt to predict the fate of these classes of compounds in the environment and prioritise those of greatest concern.
Collapse
Affiliation(s)
- R E Alcock
- Department of Environmental Science, Lancaster University, UK
| | | | | |
Collapse
|