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Gray BCT, Champion C, Broadhurst MK, Coleman MA, Benkendorff K. Effects of contaminants and flooding on the physiology of harvested estuarine decapod crustaceans: A global review and meta-analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2025; 364:125347. [PMID: 39577610 DOI: 10.1016/j.envpol.2024.125347] [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: 08/09/2024] [Revised: 10/19/2024] [Accepted: 11/18/2024] [Indexed: 11/24/2024]
Abstract
Contaminants are transported into estuaries during rainfall events, impacting the physiology of harvested species, and thereby threatening fisheries sustainability. Decapods are among the most economically important groups harvested from estuaries, but are at high risk of contaminant exposure. We conducted a systematic review and meta-analysis evaluating the physiological responses of harvested estuarine decapods to contaminants and flooding. A total of 138 research articles were identified, with global research efforts corresponding to the geographic distribution of crustacean harvesting. From these studies, 305 acute toxicity values for metals, polcyclic aromatic hydrocarbons (PAHs) and pesticide chemical classes were extracted and 341 sublethal effect sizes (log-response ratios; LnRRs) calculated using 91 physiological measures across seven response categories. At sublethal environmentally relevant concentrations, exposure to various metals, pesticide chemical classes and PAHs consistently elicited negative effects on decapod physiology (LnRR range: -0.67 to -0.07). Key physiological processes impacted by contaminant exposure included nutritional condition, osmoregulation, oxidative stress defences, acetylcholinesterase activity, metabolism and growth (LnRR range: -0.73 to -0.10), with a general trend for greater effects later in ontogeny. With new agricultural and industrial chemicals continually being marketed, our meta-analysis highlights the need for regulatory testing on harvested species prior to registration for use in catchment areas. Under future climatic variability, harvested estuarine decapods may be increasingly exposed to contaminants, with implications for fisheries and global food security.
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Affiliation(s)
- Benjamin C T Gray
- National Marine Science Centre, Southern Cross University, Coffs Harbour, 2450, New South Wales, Australia.
| | - Curtis Champion
- National Marine Science Centre, Southern Cross University, Coffs Harbour, 2450, New South Wales, Australia; Fisheries Research, NSW Department of Primary Industries and Regional Development, National Marine Science Centre, Coffs Harbour, 2450, New South Wales, Australia
| | - Matt K Broadhurst
- Fisheries Research, NSW Department of Primary Industries and Regional Development, National Marine Science Centre, Coffs Harbour, 2450, New South Wales, Australia; School of the Environment, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Melinda A Coleman
- National Marine Science Centre, Southern Cross University, Coffs Harbour, 2450, New South Wales, Australia; Fisheries Research, NSW Department of Primary Industries and Regional Development, National Marine Science Centre, Coffs Harbour, 2450, New South Wales, Australia
| | - Kirsten Benkendorff
- National Marine Science Centre, Southern Cross University, Coffs Harbour, 2450, New South Wales, Australia
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Watson GJ, White S, Gobert S, Lepoint G, Sturaro N, Richir J. Trace element contamination biomonitoring: A comparative study between the polychaetes Alitta virens and Hediste diversicolor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 363:125116. [PMID: 39401558 DOI: 10.1016/j.envpol.2024.125116] [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: 08/21/2024] [Revised: 10/08/2024] [Accepted: 10/11/2024] [Indexed: 10/23/2024]
Abstract
Trace elements (TEs) remain of significant toxicological concern as many are critical for global decarbonisation. TEs accumulate in sediments so benthic polychaetes (e.g. Hediste diversicolor and Alitta virens) are highly relevant for ecotoxicology. However, ecological/biological differences could influence TE accumulation and biomonitoring suitability. Exploiting multiple sympatric populations (Solent, UK), we measure sediment and tissue concentrations generating EFs (enrichment factors), AEIs (Adverse Effects Indexes) and tissue bioaccumulation factors. We also assess stable isotope compositions to elucidate diet influences. Despite diverse anthropogenic activity in the Solent, the majority of TEs present low levels of sediment contamination at the sites. For Ni, Pb and As, a combination of mean AEIs >1 and some sediment concentrations exceeding SQVs (Sediment Quality Values) indicate a slight toxicological risk. For Cu and Hg, high EFs and AEI scores confirm they are the greatest risk, thus requiring source identification/control. However, only mean As tissue concentrations reflect contaminated sites, therefore, identifying the As-source(s) is also a priority. Sediment and tissue concentration relationships were generally negative and not significant for both species. Although a significant negative relationship for Cd for A. virens requires further investigation, the lack of evidence for TE bioaccumulation from sediment may limit both species' biomonitoring suitability for low-contamination sites. Species differences in tissue concentration were also TE specific: H. diversicolor had significantly higher concentrations for Ag, Cu, Hg, Ni and Zn, whilst the reverse was true for Cd, Fe, Cr and As. Whilst ecological differences and that feeding sources are site and species-specific (as evidenced by C, N and S stable isotopes analysis) cannot be ignored, the diverse tissue concentrations strongly suggest different TE regulation strategies per species. Together these data will be important for ecotoxicologists and regulators to select the 'best' polychaete biomonitor and assess TE toxicity under future global decarbonisation trajectories for TE inputs.
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Affiliation(s)
- G J Watson
- Institute of Marine Sciences, School of Environment and Life Sciences, University of Portsmouth, Ferry Road, Portsmouth, PO4 9LY, UK.
| | - S White
- Centre for Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT, UK
| | - S Gobert
- Laboratory of Oceanology, UR FOCUS, Allée du six août, 13, University of Liège, 4000, Liège, Belgium; STARESO SAS, Pointe Revellata, BP 33, F-20260, Calvi, France
| | - G Lepoint
- Laboratory of Trophic and Isotope Ecology, UR FOCUS, University of Liège, B6C, Allée du six août, 13, 4000, Liège, Belgium
| | - N Sturaro
- Laboratory of Trophic and Isotope Ecology, UR FOCUS, University of Liège, B6C, Allée du six août, 13, 4000, Liège, Belgium
| | - J Richir
- SciSca SRL, 5330, Maillen, Belgium
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Liang J, Cai Y, Zhu Z, Feng JC, Zhang S, Wan H, Zhang X. Anthropogenic nitrogen pollution impacts saltmarsh resilience with inhibition of seedling establishment and population dispersal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 926:171940. [PMID: 38527539 DOI: 10.1016/j.scitotenv.2024.171940] [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: 10/26/2023] [Revised: 03/16/2024] [Accepted: 03/22/2024] [Indexed: 03/27/2024]
Abstract
Saltmarsh, a prominent buffer ecosystem, has been identified as an important sink for nitrogen (N) pollutants from marine- and land-based anthropogenic activities. However, how the enriched anthropogenic N impacts saltmarsh sustainability has been neglected due to limited understanding of marsh resilience based on seedling establishment and population dispersal under anthropogenic N inputs. This study combined mesocosm experiments and model simulations to quantify the effects of increased anthropogenic N on the seedling-based vegetation expansion of Spartina alterniflora. The results indicated that seedling survivals, growth rates, and morphological indicators were inhibited by 20.08 %, 37.14 %, and > 35.56 %, respectively, under 1.5 gN/kg anthropogenic N. The sensitivity rate of vegetation expansion was increased by 70 % with 1 gN/kg increased N concentration under the scenario of low seedling density (< 15 m/yr). These findings revealed an important unidentified weakness of the marsh development process to anthropogenic N inputs. Finally, we highlighted the importance of appropriate protection measures to control nutrient pollution in salt marshes. Our study provides new insights for enhancing the resilience and sustainability of saltmarsh ecosystems.
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Affiliation(s)
- Jianzhen Liang
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Yanpeng Cai
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Zhenchang Zhu
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Jing-Chun Feng
- Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, Institute of Environmental and Ecological Engineering, Guangdong University of Technology, Guangzhou 510006, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Si Zhang
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Hang Wan
- South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou 510655, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Xiaodong Zhang
- College of Environmental Science and Engineering, Shandong University, Qingdao, China
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4
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Gözel F, Belivermiş M, Sezer N, Kurt MA, Sıkdokur E, Kılıç Ö. Chronology of trace elements and radionuclides using sediment cores in Golden Horn Estuary, Sea of Marmara. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120359. [PMID: 36216182 DOI: 10.1016/j.envpol.2022.120359] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Revised: 09/28/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
Trace elements and radionuclides are substantial pollutants in marine environment since they are non-biodegradable and can be harmful even in minute concentrations. The Golden Horn estuary, where is an inlet of Bosphorus and two creeks, has been seriously polluted by untreated municipal and industrial dischargers for several decades. Since 1998, a large restoration and rehabilitation efforts have been undertaken in the estuary to mitigate the pollution. In the present study, four sediment cores were taken from the Golden Horn estuary to assess the historical accumulation of trace elements and radionuclides. Radiometric dating was implemented by 210Pb and 137Cs radionuclides and CRS model. Sedimentation rates were calculated in the range of 0.92-0.97 cm yr-1 in the estuary. The distribution of radionuclides (40K, 226Ra, and 228Ra) indicated some slight variations which ascribes to the geological characteristics of sediment along the cores. The concentrations of the anthropogenic elements were relatively higher in the intensive industrialization period. Their concentrations reduced in the latest 15-20 years thanks to the large-scale rehabilitation project in the estuary. The pollution indices, namely EF, Igeo, CF, and PLI showed that the concentrations of Cd, Cr, Cu, Pb, Sb, and Sn were above the world averages. Our results provide an insight on the long-term accumulation trends of trace element in the Golden Horn, which revealed that the estuary remains moderately polluted. We suggest that preventive countermeasures are much more important than post pollution remediation in the case of metallic pollution in the estuaries.
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Affiliation(s)
- Furkan Gözel
- Vocational School of Health Services, Bahçeşehir University, Beşiktaş, 34353, Istanbul, Türkiye; Department of Biology, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Türkiye.
| | - Murat Belivermiş
- Department of Biology, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Türkiye
| | - Narin Sezer
- Medical Services and Techniques Department, Istanbul Arel University, 34295, Sefaköy, Istanbul, Türkiye
| | - Mehmet Ali Kurt
- Department of Environmental Engineering, Faculty of Engineering, 33343, Mersin University, Mersin, Türkiye
| | - Ercan Sıkdokur
- Department of Molecular Biology and Genetics, Koç University, 34450, Istanbul, Türkiye
| | - Önder Kılıç
- Department of Biology, Faculty of Science, Istanbul University, Vezneciler, 34134, Istanbul, Türkiye
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5
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Celis-Hernandez O, Cundy AB, Croudace IW, Ward RD. Environmental risk of trace metals and metalloids in estuarine sediments: An example from Southampton Water, U.K. MARINE POLLUTION BULLETIN 2022; 178:113580. [PMID: 35366548 DOI: 10.1016/j.marpolbul.2022.113580] [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: 11/04/2021] [Revised: 03/15/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
Industrial and commercial port activities are widely recognized worldwide as an important source of pollution to proximal estuaries. In this study, we analysed geochemical and sedimentological parameters including major and trace elements, organic matter and sediment texture in surface sediments from the estuarine environment of Southampton Water, U.K. Using these data, and multivariate statistical tools [correlation, factor and cluster analysis and pollution indices such as Enrichment Factor (EF), Pollution Load Index (PLI) and the Adverse Effect Index (AEI)], we examine sedimentary trace metal and metalloid contamination, contamination sources, and potential biological impacts of the contamination present. The geochemical data, multivariate statistical analysis and pollution indices indicate that the spatial distribution of trace metals and metalloids is influenced by both sediment composition (and mixing) and anthropogenic activities. Most trace metal and metalloid concentrations are close to local geological background levels, except for Cu, Zn and Pb. The spatial distribution of these elements indicates that the Exxon oil refinery, Southampton port, local marinas and runoff from domestic and industrial activities act effectively as point sources of these elements. Pollution indices calculations highlight a degraded environment as a result of these pollutants, and further work is needed to assess the current impact of trace metals and metalloids on local ecology.
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Affiliation(s)
- Omar Celis-Hernandez
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Estación el Carmen, Campeche, 24157 Ciudad del Carmen, Mexico; Dirección de Cátedras CONACYT, Av. Insurgentes Sur 1582, Alcaldía Benito Juárez, 03940 Ciudad de México, Mexico; GAU-Radioanalytical, School of Ocean and Earth Science, National Oceanography Centre (Southampton), University of Southampton, Southampton SO14 3ZH, United Kingdom.
| | - Andrew B Cundy
- GAU-Radioanalytical, School of Ocean and Earth Science, National Oceanography Centre (Southampton), University of Southampton, Southampton SO14 3ZH, United Kingdom; Hong Kong Branch of the Southern Marine Science and Engineering Guandong Laboratory (Guangzhou), Hong Kong, China
| | - Ian W Croudace
- GAU-Radioanalytical, School of Ocean and Earth Science, National Oceanography Centre (Southampton), University of Southampton, Southampton SO14 3ZH, United Kingdom
| | - Raymond D Ward
- Centre for Aquatic Environments, University of Brighton, Cockcroft Building, Moulsecoomb, Brighton, BN2 4GJ, United Kingdom; Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51014 Tartu, Estonia
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6
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Abril JM, Barros H. Modelling the kinetic reactive transport of pollutants at the sediment-water interface. Applications with atmospheric fallout radionuclides. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2022; 242:106790. [PMID: 34890932 DOI: 10.1016/j.jenvrad.2021.106790] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/30/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
Understanding the behaviour of particulate matter and chemicals at the sediment-water interface (SWI) is of interest in environmental studies and risk assessments. These processes are still poorly understood, and this work aims to gain relevant insights by using a kinetic reactive transport model. It merges early diagenetic processes and box models for the uptake kinetics. Numerical solutions have been found for synthetic scenarios and for studying real cases from the literature (210Pb and Chernobyl fallout radionuclides in Lake Sniardwy, Poland, and 7Be in sediments from Tema Harbour, Ghana). The study identifies a series of factors that dynamically interact to govern the final fate of tracers in the SWI region, leading to a wide diversity of behaviours. When a term of eddy diffusivity is included in the upper regions of the pore fluid, which seems feasible for some energetic scenarios, it is possible to explain the observed large penetration depths for Cs and Be, while high particle-reactive elements are retained in thinner sediment layers. Desorption from the sediment occurs through the pore fluid as diffusive fluxes. Transient depth profiles of tracer concentrations can last from months up to a year, and they can show subsurface maxima at positions unrelated with the accretion rate. In the application cases, the model explained a wide set of observational data that was beyond the capabilities of other approaches involving physical mixing of solids and equilibrium kd. This modelling study could provide useful guidance for future research works.
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Affiliation(s)
- J M Abril
- Departamento de Física Aplicada I, ETSIA, Universidad de Sevilla, Carretera de Utrera Km 1, 41013, Sevilla, Spain.
| | - H Barros
- Universidad Simón Bolívar, Departamento de Física, Apartado, Postal 89000, Caracas, 1080, Venezuela
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7
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Celis-Hernandez O, Cundy AB, Croudace IW, Ward RD, Busquets R, Wilkinson JL. Assessing the role of the "estuarine filter" for emerging contaminants: pharmaceuticals, perfluoroalkyl compounds and plasticisers in sediment cores from two contrasting systems in the southern U.K. WATER RESEARCH 2021; 189:116610. [PMID: 33278720 DOI: 10.1016/j.watres.2020.116610] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 11/01/2020] [Accepted: 11/05/2020] [Indexed: 06/12/2023]
Abstract
The environmental occurrence, fate and ecotoxicity of emerging contaminants (ECs) has been the subject of increasing research, policy and public concern over the past two decades. While a wide range of publications have examined the environmental persistence and sediment/soil interactions of ECs following their discharge into aquatic environments, the extent to which ECs are sequestered in estuarine sediments, and the impact of this on their environmental persistence and supply to the ocean, in comparison remains unclear. This Article examines the environmental concentrations of seven, relatively water-soluble and environmentally mobile, ECs (including pharmaceuticals, perfluoroalkyl compounds, and plasticisers) in dated intertidal saltmarsh cores from two contrasting estuarine sites in the southern U.K. (one heavily urbanised/industrial, the other non-urbanised). Mean sediment EC concentrations are similar in both estuarine systems (in the range 0.1 (acetaminophen) to 17 (4-hydroxyacetophenone) ng/g dry weight). Despite their variable reported Log Kow values (from ca. 0.5 to > 7), the ECs are all apparently mobile in the marsh systems studied, and where subsurface concentration maxima are present these most likely relate to local flushing or diffusive processes and cannot be clearly linked to likely input trends or changes in sediment geochemistry (including sedimentary organic carbon content). The "estuarine filter" here, at least with respect to intertidal saltmarsh sediments, shows reduced potential to sequester the seven ECs examined and mediate their supply to coastal and shelf environments.
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Affiliation(s)
- Omar Celis-Hernandez
- Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Estación el Carmen, Campeche, C.P. 24157, Ciudad del Carmen, México; Dirección de Cátedras CONACYT. Av. Insurgentes Sur 1582, Alcaldía Benito Juárez, C.P. 03940, Ciudad de México.; School of Ocean and Earth Science, University of Southampton, National Oceanography Centre (Southampton), European Way, Southampton, SO14 3ZH, U.K
| | - Andrew B Cundy
- School of Ocean and Earth Science, University of Southampton, National Oceanography Centre (Southampton), European Way, Southampton, SO14 3ZH, U.K..
| | - Ian W Croudace
- School of Ocean and Earth Science, University of Southampton, National Oceanography Centre (Southampton), European Way, Southampton, SO14 3ZH, U.K
| | - Raymond D Ward
- Centre for Aquatic Environments, University of Brighton, Cockcroft Building, Moulsecoomb, Brighton BN2 4GJ, U.K.; Institute of Agriculture and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 5, EE-51014 Tartu, Estonia
| | - Rosa Busquets
- Kingston University London, Faculty of Science, Engineering and Computing, Kingston Upon Thames KT1 2EE, U.K
| | - John L Wilkinson
- Department of Environment and Geography, University of York, Heslington, York, YO10 5NG, U.K
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Identification of tidal trapping of microplastics in a temperate salt marsh system using sea surface microlayer sampling. Sci Rep 2020; 10:14147. [PMID: 32839471 PMCID: PMC7445233 DOI: 10.1038/s41598-020-70306-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/23/2020] [Indexed: 11/11/2022] Open
Abstract
Microplastics are contaminants of increasing global environmental concern. Estuaries are a major transport pathway for land-derived plastics to the open ocean but are relatively understudied compared to coastal and open marine environments. The role of the “estuarine filter”, by which the supply of sediments and contaminants to the sea is moderated by processes including vegetative trapping and particle flocculation, remains poorly defined for microplastics land to sea transfer. Here, we focus on the sea surface microlayer (SML) as a vector for microplastics, and use SML sampling to assess microplastic trapping in a temperate marsh system in Southampton Water, UK. The SML is known to concentrate microplastics relative to the underlying water and is the first part of rising tidal waters to traverse intertidal and upper tidal surfaces. Sampling a salt marsh creek at high temporal resolution allowed assessment of microplastics in-wash and outflow from the salt marsh, and its relationship with tidal state and bulk suspended sediment concentrations (SSC), over spring and neap tides. A statistically significant decrease in microplastics abundance from the flood tide to the ebb tide was found, and a weak positive relationship with SSC observed.
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Yang S, Li P, Liu J, Bi X, Ning Y, Wang S, Wang P. Profiles, source identification and health risks of potentially toxic metals in pyrotechnic-related road dust during Chinese New Year. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 184:109604. [PMID: 31473563 DOI: 10.1016/j.ecoenv.2019.109604] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/03/2019] [Accepted: 08/22/2019] [Indexed: 06/10/2023]
Abstract
Potentially toxic metal (PTM) pollution in road dust is of great concern, however, our understanding of PTMs released by pyrotechnic displays and their adverse impacts on human health in road dust is limited. Here, we studied PTM pollution levels and Pb isotope signatures in pyrotechnic ash and road dust (aged dust and pyrotechnic-influenced dust) samples from eight cities in China during Chinese New Year and carried out a human health risk assessment. Pyrotechnic ash had higher values of Cr, Co, Ni, Cu, Zn, As, Sr and Pb but lower values of Mn and Cd than Chinese background soil. Pyrotechnic-influenced dust had significantly higher Cu and Cr values than aged dust, with enrichment of Sr, Cu, Pb, Cr and Ni in road dust after pyrotechnic displays. Both 208Pb/206Pb and Sr values were used to confirm the presence of pyrotechnic ash in road dust. A positive matrix factorization demonstrated that pyrotechnic events contributed 70.1%, 50.4%, 36.6% and 35.5% of the Sr, Cu, Cr and Pb values to these road dust, respectively. We found that non-carcinogenic and carcinogenic risks related to PTMs in road dust were at safe levels during the Chinese New Year, although both risks were elevated following pyrotechnic events. Typically, PTM pollutants related to pyrotechnic events contributed 33.99% to non-carcinogenic and 21.83% to carcinogenic risks, suggesting that more attention needs to be paid to this source of PTM pollution in China. Current results improve our understanding of PTM pollution in pyrotechnic-influenced road dust and health risks related to pyrotechnic displays in China.
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Affiliation(s)
- Shaochen Yang
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
| | - Ping Li
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
| | - Jinling Liu
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China.
| | - Xiangyang Bi
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
| | - Yongqiang Ning
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
| | - Sheng Wang
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
| | - Pengcong Wang
- Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences, Wuhan, 430074, China
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Facile Fabrication of a Low-Cost Alginate-Polyacrylamide Composite Aerogel for the Highly Efficient Removal of Lead Ions. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9224754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
In this study, we demonstrate a one-step method for fabricating a novel sodium alginate-polyacrylamide (Alg–PAM) composite aerogel, which exhibits a very high affinity and selectivity towards Pb2+. The as-prepared Alg–PAM composite aerogel can uptake 99.2% of Pb2+ from Pb2+-containing aqueous solution (0.1 mM) and the maximum adsorption capacity for Pb2+ reaches 252.2 mg/g, which is higher than most of the reported Pb2+ adsorbents. Most importantly, the prepared Alg–PAM adsorbent can be regenerated through a simple acid-washing process with only a little loss of the adsorption performance after five adsorption–desorption cycles. In addition, the influence of the experimental conditions, such as the solution pH, contact time, and temperature, on the adsorption performance of the Alg–PAM adsorbent was studied. It is clear that the low-cost raw materials, simple synthesis, regeneration ability, and highly efficient removal performance mean that the designed Alg–PAM aerogel has broad application potential in treating Pb2+-containing wastewater.
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