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Heo H, Park MK, Cho IG, Kim J, Shin ES, Chang YS, Choi SD. Assessment of polychlorinated naphthalenes in Korean foods: Levels, profiles, and dietary intake. Food Chem 2024; 451:139498. [PMID: 38703730 DOI: 10.1016/j.foodchem.2024.139498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 05/06/2024]
Abstract
Concerns about dioxin-like compounds have increased; however, the monitoring of polychlorinated naphthalenes (PCNs) in food and the assessment of dietary intake remain limited. In this study, various foods were collected from Korean markets and analyzed for PCNs. Fishery products exhibited the highest mean concentration (48.0 pg/g ww) and toxic equivalent (TEQ) (0.0185 pg-TEQ/g ww). Agricultural products were the largest contributors (35.7%) to the total dietary intake of PCNTEQ, followed by livestock products (33.6%), fishery products (20.2%), and processed foods (10.5%). The mean intake of PCNTEQ for the Korean population was 0.901 pg-TEQ/day for males and 0.601 pg-TEQ/day for females. Generally, males and younger groups had higher daily intakes of PCNTEQ, but they did not exceed the tolerable weekly intakes. Nonetheless, it is important to manage potential health risks associated with PCNs and other dioxin-like compounds by identifying major food items contributing to PCN exposure and considering age and gender differences.
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Affiliation(s)
- Hyeji Heo
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min-Kyu Park
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - In-Gyu Cho
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jongchul Kim
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Eun-Su Shin
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yoon-Seok Chang
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Sung-Deuk Choi
- Department of Civil, Urban, Earth, and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.
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Dong S, Wu X, Zhang S, Cao J, Huang N, Zou Y, Liu P, Gu X, Zheng X, Wang P. Polychlorinated naphthalenes in freshwater fish from Beijing markets: Species-specific differences, effects of cooking, and health risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170605. [PMID: 38307290 DOI: 10.1016/j.scitotenv.2024.170605] [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: 11/30/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/04/2024]
Abstract
Fish are an important source of human dietary exposure to polychlorinated naphthalenes (PCNs). The occurrence and sources of PCNs in different species of freshwater fish are unknown, and few studies have assessed human exposure risks to PCNs through freshwater fish. In this study, 140 freshwater fish samples from 10 species were collected from Beijing markets, China. The Σ75CNs concentration range in the fish was 20.7-1310 pg/g wet weight (ww). The highest median Σ75PCNs concentration (80.4 pg/g ww) was found in mandarin fish (Siniperca chuatsi), and the lowest (29.6 pg/g ww) in snakehead (Channa argus). Di- and tri-CNs were the dominant PCN homologues with contributions of 35.3 % and 30.8 %, respectively. Unintentionally produced PCNs from metal smelting might be the source of PCN contamination in freshwater fish. The cooking temperature and time did not significantly affect the PCN concentrations in fish or the PCN homologue profiles. The highest toxic equivalent (TEQ) value was observed in sturgeon (Acipenser sinensis), followed by mandarin fish. Hexa-CNs were the most abundant homologue for the PCN TEQs. A risk assessment indicated that the dietary exposure risks for local residents to PCNs through freshwater fish were low. However, the relatively high concentrations of PCNs in the samples deserve attention to avoid PCNs exposure risks for groups with high fish consumption rates. Furthermore, freshwater fish likely contain a mixture of contaminants including dioxin and furans which also display a similar mode of toxicity as the PCNs and could enhance the risk to fish consumers.
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Affiliation(s)
- Shujun Dong
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xingyi Wu
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China; College of Science, China Agricultural University, Beijing 10081, China
| | - Su Zhang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Jun Cao
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Na Huang
- Chinese Academy of Inspection and Quarantine Comprehensive Test Center, Beijing 100123, China
| | - Yun Zou
- Organic Biological Analytical Chemistry Group, Department of Chemistry, University of Liège, Liège 4000, Belgium
| | - Puying Liu
- Guangdong Ocean University, Zhanjiang 524088, China
| | - Xiaoyao Gu
- Chinese Academy of Inspection and Quarantine Comprehensive Test Center, Beijing 100123, China
| | - Xue Zheng
- Chinese Academy of Inspection and Quarantine Comprehensive Test Center, Beijing 100123, China.
| | - Peilong Wang
- Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Teunen L, De Jonge M, Malarvannan G, Covaci A, Belpaire C, Focant JF, Blust R, Bervoets L. Effect of abiotic factors and environmental concentrations on the bioaccumulation of persistent organic and inorganic compounds to freshwater fish and mussels. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 799:149448. [PMID: 34371403 DOI: 10.1016/j.scitotenv.2021.149448] [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: 04/02/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
Many aquatic ecosystems are under persistent stress due to influxes of anthropogenic chemical pollutants. High concentrations can harm entire ecosystems and be toxic to humans. However, in case of highly hydrophobic compounds, their low water solubility precludes direct measurement in water, and thus alternative monitoring strategies are needed. In the present study, we investigated the extent to which bioaccumulated concentrations of persistent compounds can be predicted by concentrations in environmental compartments (water and sediment). Due to their high biomagnification potential, Hg and PFOS were included in this analysis as well. At 44 field locations in Flanders (Belgium), we monitored the concentrations of 11 priority compounds and their derivatives, included in the Water Framework Directive, in both sediment and water (where feasible) and biota (European perch, European eel and freshwater mussels). Besides, some sediment (i.e. total organic carbon (TOC) and clay content) and water characteristics were measured (i.e. pH, oxygen level, conductivity, nitrate, nitrite and dissolved organic carbon (DOC)). Measurements of HCB, HCBD, cis-heptachlorepoxide, HBCD and PFOS in sediment and ∑PCB in water showed a lower detection frequency than in fish samples. While PCB profiles were comparable between all matrices, for PBDE clear differences were detected between sediment and fish profiles, with BDE99 contributing the most for sediment (34%) and BDE47 for fish (≥44%), followed by BDE99 for perch (28%) and BDE100 for eel (25%). Water concentrations for PFOS and benzo(a)pyrene were predictive of respective bioaccumulated concentrations. HCB, ∑PCB and ∑PBDE, concentrations in fish were dependent on sediment concentrations and negatively related to organic compound levels (p < 0.05). Furthermore, pH and nitrite were negatively associated with accumulated concentrations in eel for HCB and PFOS, respectively (p < 0.05). Strong relationships between bioaccumulation and sediment and/or water concentrations strengthened the basis for surrogate monitoring methods. Finally, the extrapolation potential of Hg, ∑PBDE, PFOS, HBCD and ∑PCB between both fish species offered new opportunities in extrapolating different European monitoring frameworks.
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Affiliation(s)
- Lies Teunen
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
| | - Maarten De Jonge
- Flanders Environment Agency (VMM), Dokter De Moorstraat 24-26, B-9300 Aalst, Belgium
| | - Govindan Malarvannan
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Adrian Covaci
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
| | - Claude Belpaire
- Research Institute for Nature and Forest (INBO), Dwersbos 28, B-1630 Linkebeek, Belgium
| | - Jean-François Focant
- CART, Organic and Biological Analytical Chemistry, Mass Spectrometry Laboratory, Chemistry Department, University of Liège, Allée de la Chimie 3, B-6c Start-Tilman, B-4000 Liège, Belgium
| | - Ronny Blust
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Lieven Bervoets
- Department of Biology, Systemic Physiological and Ecotoxicological Research Group, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
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Dong S, Li X, Wang P, Su X. Polychlorinated naphthalene concentrations and distribution in feed raw materials. CHEMOSPHERE 2018; 211:912-917. [PMID: 30223339 DOI: 10.1016/j.chemosphere.2018.08.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/06/2018] [Accepted: 08/08/2018] [Indexed: 06/08/2023]
Abstract
Concentrations and patterns of 75 PCN congeners in feed raw materials of animal and plant origin were investigated. Six types of feed raw materials of animal origin and three types of feed raw materials of plant origin from China were collected in 2016. The total concentrations of PCNs in the collected materials ranged from 147 to 1009 ng kg-1, with the highest occurring in fish meal. The mean PCNs concentration in feed raw materials of animal origin (551 ng kg-1) was higher than in those of plant origin (294 ng kg-1). Additionally, lower chlorinated PCNs were the main homologues in raw feed materials, while Di-CNs were the predominant homologues in all samples (mean: 53%), followed by tri-CNs (mean: 28%). The most abundant congeners were CN5/7 and 24/14. Additionally, the toxicity equivalencies (TEQs) of PCNs in the feed raw materials ranged from 0.010 to 0.046 ng TEQ kg-1, with the highest TEQ concentrations of PCNs detected in gluten meal. Together, CN5/7, 66/67, 65/70, and 73 contributed approximately 64% of the total PCN TEQs in raw feed materials. Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (PCBs) in the feed raw materials were detected to compare the TEQ distribution of those dioxin-like compounds. The mass concentrations of PCNs were 1-3 orders of magnitude higher than those of PCDD, PCDFs and PCBs, while the TEQ concentrations of PCNs contributed 2.0%-6.5% of the total TEQs of PCNs, PCDDs, PCDFs and PCBs in the feed raw materials.
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Affiliation(s)
- Shujun Dong
- Institute of Quality Standard and Testing Technology for Agro-Products, The Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaomin Li
- Institute of Quality Standard and Testing Technology for Agro-Products, The Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Peilong Wang
- Institute of Quality Standard and Testing Technology for Agro-Products, The Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xiaoou Su
- Institute of Quality Standard and Testing Technology for Agro-Products, The Chinese Academy of Agricultural Sciences, Beijing 100081, China.
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Cui L, Wang S, Yang X, Gao L, Zheng M, Wang R, Qiao L, Xu C. Fatty acids, polychlorinated dibenzo-p-dioxins and dibenzofurans, and dioxin-like polychlorinated biphenyls in paired muscle and skin from fish from the Bohai coast, China: Benefits and risks associated with fish consumption. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 639:952-960. [PMID: 29929334 DOI: 10.1016/j.scitotenv.2018.05.195] [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: 03/27/2018] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 06/08/2023]
Abstract
Fish consumption benefits early cognitive development and cardiovascular health because of the n-3 long-chain polyunsaturated fatty acids in the fish, but toxic pollutants in fish, like dioxin-like polychlorinated biphenyls (dl-PCBs) and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), may decrease or counteract these benefits. In this study, the fatty acids, dl-PCBs, and PCDD/Fs were analyzed in paired muscle and skin from 13 fish and one squid species from the Bohai coast, which have been influenced by serious dioxin pollution from the Bohai Rim Region. The total fatty acid concentrations in the muscle and skin were 2.6-87 and 3.6-156 mg/g wet weight (ww), respectively. The total polyunsaturated fatty acid concentrations were higher in skin than muscle for almost half of the species. The total PCDD/F and dl-PCB toxic equivalents in the muscle and skin were 0.055-0.68 and 0.0099-0.43 pg/g ww, respectively, and were up to five times higher in the muscle than in the skin for eight species. Few benefit-risk studies for fish consumption with and without skin have been performed, so benefit-risk quotients (BRQs) for eating only muscle, only skin, and eating both were calculated. To achieve the recommended 250 mg of EPA + DHA intake, eating only muscle, only skin, and eating both from seven species with BRQs < 1 would cause no significant risk. Removing skin before eating is not necessary for these species. Three fish species had BRQs < 1 for muscle only but BRQs > 1 for skin only. Removing skin before eating would be better for these species. The other four fish species had BRQs > 1 for eating only muscle, only skin, and eating both, indicating the potential risk caused by PCDD/F and dl-PCB. Amounts of the four fish species consumed should be decreased, and other sources of EPA and DHA should be selected.
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Affiliation(s)
- Lili Cui
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shasha Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Hebei Agricultural University, Baoding 071000, China
| | - Xianpeng Yang
- Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
| | - Lirong Gao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Minghui Zheng
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Runhua Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Hebei Agricultural University, Baoding 071000, China
| | - Lin Qiao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chi Xu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
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6
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Hoobin SJ, Byer JD, Alaee M, Brown RS, Hodson PV. Dioxin-like contaminants are no longer a risk to the American eel (Anguilla rostrata) in Lake Ontario. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2018; 37:1061-1070. [PMID: 29193243 DOI: 10.1002/etc.4033] [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: 07/05/2017] [Revised: 08/04/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
The embryotoxicity of extracts of American eels (Anguilla rostrata) was measured to determine whether maternally derived contaminants contribute to the declining recruitment of eels to Lake Ontario. Sexually maturing, large yellow and silver eels were sampled in 2007 and 2008 from 5 locations in eastern Canada, including Lake Ontario; positive controls included eels from the Hudson River, United States, and Canal Dessel-Schoten, Belgium (European eel, Anguilla anguilla). Japanese medaka eggs were injected immediately after fertilization with 1 or 10 nL of eel extract and, after 12 d, scored for signs of toxicity. Eel extracts did not cause dioxin-like embryotoxicity, reflecting the low concentrations of total dioxin equivalents measured chemically in these same extracts. Embryo mortality and reduced hatching success at high doses of eel extracts may reflect the bioaccumulation of legacy or emerging chemicals of concern. The results were consistent with long-term trends of declining concentrations of persistent organic pollutants (POPs) in tissues of eels and other fish species from Lake Ontario, trends of declining embryotoxicity of eel tissue extracts, and recent increases of recruitment of juvenile eels to Lake Ontario. If dioxin-like compounds contributed in the past to the decline of recruitment and abundance of American eels in Lake Ontario, these data suggest that recruitment should recover, following the same trends as the recovery of lake trout reproduction in Lake Ontario. Environ Toxicol Chem 2018;37:1061-1070. © 2017 SETAC.
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Affiliation(s)
- Sharilyn J Hoobin
- Department of Biology, Queen's University, Kingston, Ontario, Canada
- BluMetric Environmental, The Woolen Mill, Kingston, Ontario, Canada
| | - Jonathan D Byer
- Department of Chemistry, Queen's University, Kingston, Ontario, Canada
- Environment and Climate Change Canada, Burlington, Ontario, Canada
| | - Mehran Alaee
- Environment and Climate Change Canada, Burlington, Ontario, Canada
| | - R Stephen Brown
- School of Environmental Studies, Queen's University, Kingston, Ontario, Canada
| | - Peter V Hodson
- Department of Biology, Queen's University, Kingston, Ontario, Canada
- School of Environmental Studies, Queen's University, Kingston, Ontario, Canada
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7
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Cui L, Wang S, Gao L, Huang H, Xia D, Qiao L, Liu W. Concentrations and trophic magnification of polychlorinated naphthalenes (PCNs) in marine fish from the Bohai coastal area, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 234:876-884. [PMID: 29248855 DOI: 10.1016/j.envpol.2017.12.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 12/05/2017] [Accepted: 12/08/2017] [Indexed: 06/07/2023]
Abstract
Polychlorinated naphthalenes (PCNs) have been found widely in the aquatic environment and can be transferred through food chains, which can magnify or dilute their toxic effects on humans. In this study, PCNs were analyzed in samples of 17 species of fish with different dietary habits collected in the Bohai coastal area in China. Dichloronaphthalenes, which have rarely been quantified in previous studies, were determined. The total PCN concentrations were from 7.3 to 214 pg/g wet weight, and the highest concentration was found in ditrema. The trichloronaphthalenes were the most abundant PCNs, followed by the dichloronaphthalenes and pentachloronaphthalenes. The relatively high contributions of the less-chlorinated homologs to the total PCN concentrations indicated that the main PCN sources around the Bohai were industrial thermal process emissions rather than technical PCN formulations. The trophic magnification factors of the PCN homologs were from 3.1 to 9.9, indicating that PCNs were biomagnified by fish. The trophic magnification factor of dichloronaphthalene and trichloronaphthalenes was 5.8 and 6.4, respectively, indicating for the first time that dichloronaphthalene and trichloronaphthalenes can undergo trophic magnification by fish. The two highest trophic magnification factors were for the pentachloronaphthalenes and hexachloronaphthalenes, probably because these PCNs having fewer vicinal carbon atoms without chlorine atoms attached are less easily biotransformed than the other homologs. The dioxin-like toxicities of the PCNs in the samples, expressed as potential toxic equivalences (TEQs), were assessed. The highest total TEQ was 0.0090 pg/g ww, in Pacific herring, and the hexachloronaphthalenes were the dominant contributors to the total TEQs in the fish samples. The PCN TEQs were much lower than the polychlorinated dibenzo-p-dioxin and dibenzofuran and dioxin-like polychlorinated biphenyl TEQs found in fish from the Bohai in previous studies, and made marginal contributions to overall human exposure to dioxin-like TEQs, suggesting that PCNs pose no toxicological concerns.
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Affiliation(s)
- Lili Cui
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Shasha Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Hebei Agricultural University, Baoding 071000, China
| | - Lirong Gao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Huiting Huang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dan Xia
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Lin Qiao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wenbin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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8
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Freese M, Sühring R, Marohn L, Pohlmann JD, Wolschke H, Byer JD, Alaee M, Ebinghaus R, Hanel R. Maternal transfer of dioxin-like compounds in artificially matured European eels. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 227:348-356. [PMID: 28482314 DOI: 10.1016/j.envpol.2017.04.096] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 04/24/2017] [Accepted: 04/30/2017] [Indexed: 06/07/2023]
Abstract
Several eel species of the genus Anguilla are considered endangered due to a severe decline in recruitment. Up to now, the reasons for this threatening development are not fully understood. The eel's highly specialized biology can lead to explicitly high accumulation of globally distributed organic lipophilic contaminants during its continental life. Because of this and due the particular toxicological sensitivity of early life stages of oviparous organisms towards dioxin-like compounds, it is crucial to improve our understanding concerning toxicokinetics and maternal transfer of organic contaminants in eels. This study presents analytical data on maternal transfer of dioxin-like (dl) compounds in relevant tissue samples taken from artificially matured and non-matured European silver eels (Anguilla anguilla) from German inland waters using gas chromatography coupled with mass spectrometry (GC/MS) and high-resolution mass spectrometry (GC/HRMS). Detected concentrations revealed a lipid-driven transfer of targeted compounds from muscle-fat-reserves to gonads and eggs respectively, with no distinct preferences concerning the chlorination degree of targeted compounds. Dl-PCBs were shown to contribute the major share of toxicity equivalents found in analysed eel tissues. Maternal muscle tissue to egg concentration ratios in wet weight-based samples had a mean of 6.95 ± 1.49 in accordance with the differences in total lipid content in the respective body matrices. Dioxins and furans in analysed samples were (from a toxicological point of view) of less relevance. Furthermore it was shown that muscle concentrations in silver eels could be used in future assessments to make conservative predictions for expected egg concentrations in female eels.
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Affiliation(s)
- Marko Freese
- Thünen Institute of Fisheries Ecology, Palmaille 9, 22767 Hamburg, Germany.
| | - Roxana Sühring
- Centre for Environment, Fisheries and Aquaculture Science (Cefas), Lowestoft, Suffolk NR33 0HT, United Kingdom
| | - Lasse Marohn
- Thünen Institute of Fisheries Ecology, Palmaille 9, 22767 Hamburg, Germany
| | - Jan-Dag Pohlmann
- Thünen Institute of Fisheries Ecology, Palmaille 9, 22767 Hamburg, Germany
| | - Hendrik Wolschke
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Coastal Research, Department for Environmental Chemistry, Max-Planck-Straße 1, 21502 Geesthacht, Germany
| | - Jonathan D Byer
- Life Science and Chemical Analysis, LECO Corporation, St. Joseph, MI, United States
| | - Mehran Alaee
- Water Science and Technology Directorate, Environment Canada, Burlington, Ontario L7R4A6, Canada
| | - Ralf Ebinghaus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research, Institute of Coastal Research, Department for Environmental Chemistry, Max-Planck-Straße 1, 21502 Geesthacht, Germany
| | - Reinhold Hanel
- Thünen Institute of Fisheries Ecology, Palmaille 9, 22767 Hamburg, Germany
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St-Gelais AT, Aeppli C, Burnell CA, Costa-Pierce BA. Non-dioxin like polychlorinated biphenyl indicator congeners in Northwest Atlantic spiny dogfish (Squalus acanthias). MARINE POLLUTION BULLETIN 2017; 120:414-421. [PMID: 28479149 DOI: 10.1016/j.marpolbul.2017.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 04/26/2017] [Accepted: 05/01/2017] [Indexed: 06/07/2023]
Abstract
In the Northwest Atlantic Ocean (NWAO), spiny dogfish (Squalus acanthias) is a promising commercial species following of collapse of traditional groundfish stocks. There are little available data assessing polychlorinated biphenyls (PCBs) in NWAO spiny dogfish. Here, six non-dioxin like PCB indicator congeners used in European Union regulations (EU NDL-PCB) were quantified via gas chromatography/mass spectrometry in 50 mature male spiny dogfish landed in southern New England. The average total concentration of EU NDL-PCBs was 58±43ng/g (mean±1 standard deviation). PCB values (corrected for co-elution) were below the 200ng/g EU regulatory limit. Results provide first recent regional insight into the PCB content of spiny dogfish in the NWAO. However, our study offers only a snapshot of one particular dogfish population, and might not be representative for the whole NWAO. This study underscores the need for further testing in this species.
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Affiliation(s)
- Adam T St-Gelais
- Center for Excellence in the Marine Sciences, Department of Marine Science, Arthur P. Girard Marine Science Center, University of New England, Biddeford, ME 04005, USA.
| | - Christoph Aeppli
- Bigelow Laboratory for Ocean Sciences, East Boothbay, ME 04544, USA.
| | - Craig A Burnell
- Bigelow Analytical Services, Bigelow Laboratory for Ocean Sciences, East Boothbay, ME 04544, USA.
| | - Barry A Costa-Pierce
- Center for Excellence in the Marine Sciences, Department of Marine Science, Arthur P. Girard Marine Science Center, University of New England, Biddeford, ME 04005, USA.
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10
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Champoux L, Rail JF, Lavoie RA. Polychlorinated dibenzo-p-dioxins, dibenzofurans, and flame retardants in northern gannet (Morus bassanus) eggs from Bonaventure Island, Gulf of St. Lawrence, 1994-2014. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 222:600-608. [PMID: 28069368 DOI: 10.1016/j.envpol.2016.09.055] [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: 03/03/2016] [Revised: 09/13/2016] [Accepted: 09/16/2016] [Indexed: 06/06/2023]
Abstract
Northern gannet (Morus bassanus) eggs from Bonaventure Island, Québec, Canada, were collected to monitor concentrations of contaminants. Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/Fs) and non-ortho polychlorinated biphenyls (PCBs) were measured in eggs from 2004 and 2009, and several brominated and nonbrominated flame retardants (FRs) were measured every 2-5 years in eggs from 1994 to 2014. The sum (Σ) concentrations of PCDDs/Fs were significantly lower in 2009 relative to 2004, but the total toxic equivalent concentrations for PCDDs, PCDFs, and PCBs showed no significant differences (196 ng/kg wet weight (ww) in 2004 and 220 ng/kg ww in 2009). The mean ΣFR concentrations decreased significantly between 1994 and 2014, from 58 ng/g ww to 19 ng/g ww. Hexabromocyclododecane (HBCDD) was the principal nonbrominated FR detected in gannet eggs and ranged from <1.0 ng/g ww to 6.9 ng/g ww. The PCDD/F and nonortho PCB profiles were dominated by 2,3,7,8- tetrachloro-dibenzofuran (2,3,7,8-TCDF; from 26.2 ng/g ww to 34.8 ng/kg ww) and PCB-77 (from 1580 ng/g ww to 2650 ng/kg ww), respectively. Although the values of both ecological tracer stable isotopes of carbon (δ13C) and nitrogen (δ15N) showed differences among the years, no temporal trends were observed, which indicates relatively stable adults' diet and foraging area over this time period. The trends over time in concentrations of the studied contaminants likely reflect a decrease in environmental contamination. The mean 2012 eggshell thickness was 10% lower than the pre-DDT value and corresponded to a year of poor reproductive success.
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Affiliation(s)
- Louise Champoux
- Wildlife and Landscape Science Directorate, Science and Technology Branch, Environment and Climate Change Canada, Quebec, Quebec, G1J 0C3, Canada.
| | - Jean-François Rail
- Canadian Wildlife Service, Environment and Climate Change Canada, Quebec, Quebec, G1J 0C3, Canada.
| | - Raphael A Lavoie
- Biology Department, Queen's University, Kingston, Ontario, K7L 3N6, Canada.
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11
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Sühring R, Ortiz X, Pena-Abaurrea M, Jobst KJ, Freese M, Pohlmann JD, Marohn L, Ebinghaus R, Backus S, Hanel R, Reiner EJ. Evidence for High Concentrations and Maternal Transfer of Substituted Diphenylamines in European Eels Analyzed by Two-Dimensional Gas Chromatography-Time-of-Flight Mass Spectrometry and Gas Chromatography-Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:12678-12685. [PMID: 27791360 DOI: 10.1021/acs.est.6b04382] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Chemical pollution is hypothesized to be one of the factors driving the strong decline of the critically endangered European eel population. Specifically, the impact of contaminants on the quality of spawning eels and subsequent embryo survival and development has been discussed as crucial investigation point. However, so far, only very limited information on potential negative effects of contaminants on the reproduction of eels is available. Through the combination of nontargeted ultrahigh-resolution mass spectrometry and multidimensional gas chromatography, combined with more-conventional targeted analytical approaches and multimedia mass-balance modeling, compounds of particular relevance, and their maternal transfer in artificially matured European eels from the German river Ems have been identified. Substituted diphenylamines were, unexpectedly, found to be the primary organic contaminants in the eel samples, with concentrations in the μg g-1 wet weight range. Furthermore, it could be shown that these contaminants, as well as polychlorinated biphenyls (PCBs), organochlorine pesticides, and polyaromatic hydrocarbons (PAHs), are not merely stored in lipid rich tissue of eels but maternally transferred into gonads and eggs. The results of this study provide unique information on both the fate and behavior of substituted diphenylamines in the environment as well as their relevance as contaminants in European eels.
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Affiliation(s)
- Roxana Sühring
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research , Max-Planck-Strasse 1, 21502 Geesthacht, Germany
- Centre for Environment, Fisheries and Aquaculture Science (Cefas) , Lowestoft, Suffolk, NR33 0HT United Kingdom
| | - Xavier Ortiz
- Ontario Ministry of the Environment and Climate Change , 125 Resources Road, Toronto, Ontario M9P 3 V6, Canada
| | - Miren Pena-Abaurrea
- Ontario Ministry of the Environment and Climate Change , 125 Resources Road, Toronto, Ontario M9P 3 V6, Canada
| | - Karl J Jobst
- Ontario Ministry of the Environment and Climate Change , 125 Resources Road, Toronto, Ontario M9P 3 V6, Canada
| | - Marko Freese
- Thünen Institute of Fisheries Ecology , Palmaille 9, 22767 Hamburg, Germany
| | - Jan-Dag Pohlmann
- Thünen Institute of Fisheries Ecology , Palmaille 9, 22767 Hamburg, Germany
| | - Lasse Marohn
- Thünen Institute of Fisheries Ecology , Palmaille 9, 22767 Hamburg, Germany
| | - Ralf Ebinghaus
- Helmholtz-Zentrum Geesthacht, Centre for Materials and Coastal Research , Max-Planck-Strasse 1, 21502 Geesthacht, Germany
| | - Sean Backus
- Canada Centre for Inland Waters, Environment Canada , 867 Lakeshore Road, Burlington, Ontario L7R 4A6, Canada
| | - Reinhold Hanel
- Thünen Institute of Fisheries Ecology , Palmaille 9, 22767 Hamburg, Germany
| | - Eric J Reiner
- Ontario Ministry of the Environment and Climate Change , 125 Resources Road, Toronto, Ontario M9P 3 V6, Canada
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12
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Rigaud C, Couillard CM, Pellerin J, Légaré B, Byer JD, Alaee M, Lebeuf M, Casselman JM, Hodson PV. Temporal variations in embryotoxicity of Lake Ontario American eel (Anguilla rostrata) extracts to developing Fundulus heteroclitus. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 541:765-775. [PMID: 26433333 DOI: 10.1016/j.scitotenv.2015.09.049] [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: 07/19/2015] [Revised: 09/10/2015] [Accepted: 09/10/2015] [Indexed: 06/05/2023]
Abstract
The recruitment of American eel (Anguilla rostrata) juveniles to Lake Ontario (LO), Canada has declined significantly since the 1980s. To investigate the possible contribution of maternally-transferred persistent organic pollutants (POPs) to this decline, this study measured temporal variations in the toxicity of complex organic mixtures extracted from LO American eels captured in 1988, 1998 and 2008 to developing Fundulus heteroclitus exposed by intravitelline (IVi) injection. The 1988 and 1998 eel extracts were most toxic, causing a pattern of sublethal embryotoxic responses similar to those previously reported in F. heteroclitus embryos exposed to single dioxin-like compounds (DLCs): stunted growth, craniofacial deformities, EROD activity induction, and reduced predatory capacities. The potency of extracts declined over time; the only significant effect of the 2008 eel extracts was EROD induction. The chemically-derived TCDD-TEQs of eel extracts, calculated using measured concentrations of some DLCs and their relative potencies for F. heteroclitus, overestimated their potency to induce EROD activity possibly due to interactions among POPs. Other POPs measured in eel extracts (non-dioxin-like PCBs, PBDEs and organochlorinated pesticides) did not appear to be important agonistic contributors to the observed toxicity. The toxicity of the complex mixtures of POPs measured in LO eels may have been underestimated as a result of several factors, including the loss of POPs during extracts preparation and a focus only on short-term effects. Based on the model species examined, our results support the hypothesis that contamination of LO with DLCs may have represented a threat to the American eel population through ecologically-relevant effects such as altered larval prey capture ability. These results prioritize the need to assess early life stage (ELS) toxicity of DLCs in Anguilla species, to investigate long-term effects of complex eel extracts to ELS of fish, and to develop biomarkers for potential effects in eel ELS sampled in the field.
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Affiliation(s)
- Cyril Rigaud
- Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec G5L 3A1, Canada; Fisheries and Oceans Canada, Maurice Lamontagne Institute, P.O. Box 1000, Mont-Joli, Québec G5H 3Z4, Canada.
| | - Catherine M Couillard
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, P.O. Box 1000, Mont-Joli, Québec G5H 3Z4, Canada.
| | - Jocelyne Pellerin
- Institut des Sciences de la Mer, Université du Québec à Rimouski, 310 Allée des Ursulines, Rimouski, Québec G5L 3A1, Canada
| | - Benoît Légaré
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, P.O. Box 1000, Mont-Joli, Québec G5H 3Z4, Canada
| | - Jonathan D Byer
- Environment Canada, 867 Lakeshore Road, Burlington, Ontario L7R 4A6, Canada; Queen's University, 99 University Avenue, Kingston, Ontario K7L 3N6, Canada
| | - Mehran Alaee
- Environment Canada, 867 Lakeshore Road, Burlington, Ontario L7R 4A6, Canada
| | - Michel Lebeuf
- Fisheries and Oceans Canada, Maurice Lamontagne Institute, P.O. Box 1000, Mont-Joli, Québec G5H 3Z4, Canada
| | - John M Casselman
- Queen's University, 99 University Avenue, Kingston, Ontario K7L 3N6, Canada
| | - Peter V Hodson
- Queen's University, 99 University Avenue, Kingston, Ontario K7L 3N6, Canada
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13
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Byer JD, Lebeuf M, Trottier S, Raach M, Alaee M, Stephen Brown R, Backus S, Casselman JM, Hodson PV. Trends of persistent organic pollutants in American eel (Anguilla rostrata) from eastern Lake Ontario, Canada, and their potential effects on recruitment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 529:231-42. [PMID: 26022407 DOI: 10.1016/j.scitotenv.2015.05.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 05/08/2015] [Accepted: 05/14/2015] [Indexed: 05/18/2023]
Abstract
This study reports the history of contamination of American eels (Anguilla rostrata) from eastern Lake Ontario (LO) by persistent organic pollutants (POPs). Three groups of 10 large female eels captured in eastern LO in each of 1988, 1998, and 2008 were analysed for polychlorinated dibenzo-p-dioxins and furans, polychlorinated biphenyls, several organochlorine pesticides, and polybrominated diphenyl ethers. Mean concentrations were up to 3-fold lower in 2008 compared to previous years. When combined with the results of previous studies, these data show that concentrations of POPs in American eels have declined exponentially since the early 1980s by an average of 9.1±1.9% per year. Toxic equivalent (TEQ) concentrations of dioxin-like compounds (DLCs) were calculated from fish toxic equivalency factors. Assuming an efficient transfer of DLCs to their eggs, egg TEQs prior to 2000 exceeded the threshold for chronic toxicity to embryos of European eels (Anguilla anguilla) and lake trout (Salvelinus namaycush) (4-5 pg/g ww of TEQ). These results suggest that embryotoxicity of maternally-derived DLCs from LO eels, historically a major contributor to the spawning stock of American eels, could have impaired the reproductive and recruitment success of the species.
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Affiliation(s)
- Jonathan D Byer
- Department of Chemistry, Queen's University, Kingston K7L 3N6, Canada; Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada
| | - Michel Lebeuf
- Fisheries and Oceans Canada, Mont-Joli G5H 3Z4, Canada
| | | | - Meriem Raach
- Fisheries and Oceans Canada, Mont-Joli G5H 3Z4, Canada
| | - Mehran Alaee
- Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada
| | - R Stephen Brown
- Department of Chemistry, Queen's University, Kingston K7L 3N6, Canada
| | - Sean Backus
- Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada
| | - John M Casselman
- Department of Biology, Queen's University, Kingston K7L 3N6, Canada
| | - Peter V Hodson
- Department of Biology, Queen's University, Kingston K7L 3N6, Canada; School of Environmental Studies, Queen's University, Kingston, K7L 3N6, Canada.
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14
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Claveau J, Monperrus M, Jarry M, Pinaly H, Baudrimont M, Gonzalez P, Amouroux D, Bardonnet A, Bolliet V. Spatial and seasonal variations of methylmercury in European glass eels (Anguilla anguilla) in the Adour estuary (France) and relation to their migratory behaviour. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:10721-10732. [PMID: 25752638 DOI: 10.1007/s11356-015-4303-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Accepted: 03/02/2015] [Indexed: 06/04/2023]
Abstract
Overall recruitment of European glass eels (Anguilla anguilla) has decreased significantly since the early 1980s. Due to their long life cycle, benthic/demersal habits and high lipid content, eels might accumulate high concentrations of contaminants, but data concerning glass eels are still scarce. This study provides original data on methylmercury (MeHg) concentrations in glass eels at spatial (marine and estuarine), annual and seasonal scales. The relationship between MeHg concentrations in glass eels and their propensity to migrate up estuaries was also investigated. MeHg data were individually related to the eels' energetic condition which was estimated by dry weight. Glass eel migratory behaviour was investigated in an experimental flume and related to the MeHg concentration and dry weight at the individual scale. Marine and estuarine glass eels were caught from 2004 to 2011. There was a strong inverse correlation between MeHg concentrations and dry weight. MeHg concentrations increased in marine and estuarine glass eels from 2004 to 2009 and from 2004 to 2010, respectively, and then, both groups decreased in 2011. On a seasonal time scale, MeHg concentrations were higher at the end of the fishing season (April). MeHg bioaccumulation is likely to result from different sources, but the lack of significant differences between marine and estuarine glass eels suggests that direct contamination during estuarine migration is low. Other sources such as maternal transfer or oceanic contamination are discussed.
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Affiliation(s)
- Julie Claveau
- INRA, UMR 1224 Ecobiop, Aquapôle, 64310, Saint Pée sur Nivelle, France,
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15
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Liu G, Zheng M, Cai Z. Occurrence, profile and possible sources of PCNs in Hong Kong soils, and a comparison with PCBs, PCDDs and PCDFs. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2014; 21:13656-13663. [PMID: 24996945 DOI: 10.1007/s11356-014-3258-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
Polychlorinated naphthalenes (PCNs) have been proposed for inclusion in the annexes of the Stockholm Convention by the European Union, signifying a probable increase in monitoring PCN levels at a global level. Investigations on PCN levels in the environment of Hong Kong have not been reported. In this preliminary investigation, PCN levels in surface soils samples were determined by isotope dilution HRGC/HRMS techniques, and compared with those of polychlorinated biphenyl (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs). The concentrations of PCNs in the soil samples were 35-883 pg g(-1) (average, 201; and median, 94 pg g(-1)), which were lower than those of PCBs PCDDs and PCDFs. This comparison suggested that PCNs are currently not priority POPs compared with dioxins and PCBs in Hong Kong soils. PCDDs were the most important contributor to the sum of toxic equivalents of PCNs, PCBs, PCDDs and PCDFs. OCDD was the most dominant dioxin congener in Hong Kong surface soils. PCB-118 was the most abundant in 12 dl-PCB congeners. PCN congeners indicating thermal related sources (CN52/60, CN66/67 and CN73) were relatively abundant in their respective homologs, which suggested PCN contamination from thermal sources. The ratio of CN73 to CN74 in soil samples suggested the contribution of PCN contaminations in soils from both thermal-related sources and evaporative emissions of technical PCN mixtures.
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Affiliation(s)
- Guorui Liu
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Kowloon, Hong Kong, SAR, China
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16
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Byer JD, Pacepavicius G, Lebeuf M, Brown RS, Backus S, Hodson PV, Alaee M. Qualitative analysis of halogenated organic contaminants in American eel by gas chromatography/time-of-flight mass spectrometry. CHEMOSPHERE 2014; 116:98-103. [PMID: 24703010 DOI: 10.1016/j.chemosphere.2014.02.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 02/04/2014] [Accepted: 02/06/2014] [Indexed: 06/03/2023]
Abstract
Target compound analysis with scanning mass spectrometers such as quadrupole or magnetic sector instruments is used extensively in environmental chemistry because of the selectivity, sensitivity, and robustness. Yet, target compound analysis selectively ignores the majority of compounds present in a sample, especially in complex matrices like fish. In this study, time-of-flight mass spectrometry was used to screen for and identify halogenated compounds in American eels (Anguilla rostrata). Individual and then pooled eel samples were analysed using electron ionization and electron capture negative ionization (ECNI) modes. Eels were differentiated by principal component analysis of chemical profiles and were grouped corresponding to their capture location, all with a single instrument injection per sample. Bromine containing compounds were further investigated by taking advantage of the selectivity of ECNI by utilizing the Br(-) ion m/z 79 and 81. A total of 51 brominated compounds were detected and their identities were attempted by authentic standards, library searching, and/or chemical formula prediction based on accurate mass measurements. Several PBDEs were identified in the samples, and the majority of the non-PBDEs identified were bromophenols, bromoanisoles, and bromobenzenes. These classes of compounds are synthesized for use in flame retardant production either as intermediates or as final products. However, their occurrence in eels was most likely the result of metabolism or break-down products of high production volume flame retardants like polybrominated diphenyl ethers and bromophenoxy compounds.
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Affiliation(s)
- Jonathan D Byer
- Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada; Department of Chemistry, Queen's University, Kingston K7L 3N6, Canada
| | - Grazina Pacepavicius
- Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada
| | - Michel Lebeuf
- Fisheries and Oceans Canada, Mont-Joli G5H 3Z4, Canada
| | - R Stephen Brown
- Department of Chemistry, Queen's University, Kingston K7L 3N6, Canada
| | - Sean Backus
- Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada
| | - Peter V Hodson
- Department of Biology and School of Environmental Studies, Queen's University, Kingston K7L 3N6, Canada
| | - Mehran Alaee
- Water Science and Technology Directorate, Environment Canada, Burlington L7R 4A6, Canada.
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17
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Sezmis AL, Birch G, Covaci A. Relationships between dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and dioxin-like biphenyls (dl-PCBs) congener concentrations in aquatic organisms from Sydney Estuary, Australia and physiology, spatial, seasonality, trophodynamic and life history traits. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 490:50-58. [PMID: 24840280 DOI: 10.1016/j.scitotenv.2014.04.093] [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: 01/27/2014] [Revised: 04/22/2014] [Accepted: 04/22/2014] [Indexed: 06/03/2023]
Abstract
Over the past few decades, there has been considerable interest in hydrophobic persistent organic pollutants (POPs) and their accumulative properties in aquatic organisms. Several factors, such as environmental concentrations (i.e. in sediment) and physiological characteristics of organisms determine species-specific accumulation patterns of POPs in marine animal tissue. The present study investigated factors that govern species-specific accumulation patterns of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs) and dioxin-like biphenyls (dl-PCBs) in a food web from Sydney Estuary (Australia). The results indicated that physiological characteristics, i.e. lipid %, spatial, i.e. distance from Homebush Bay (point source of POPs) and life history characteristics of the organisms, such as diet and home range, influence PCDD/F and dl-PCB tissue concentrations to a varying degree. For example, PCDD/F tissue concentrations increased with the presence of detritivorous diet, species with limited home range and close proximity to Homebush Bay. On the other hand, lipid %, piscivorous diet and close proximity to Homebush Bay were the main predictors causing increases in dl-PCB tissue levels. Distance from Homebush Bay was the only predictor affecting both PCDD/F and dl-PCB tissue levels at a similar rate, i.e. decreasing tissue concentrations as the distance increases from Homebush Bay.
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Affiliation(s)
- Aysha Laila Sezmis
- The Environmental Geology Group, The University of Sydney, New South Wales 2006, Australia.
| | - Gavin Birch
- The Environmental Geology Group, The University of Sydney, New South Wales 2006, Australia
| | - Adrian Covaci
- Toxicological Centre, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk, Antwerp, Belgium
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18
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Blanchet-Letrouvé I, Zalouk-Vergnoux A, Vénisseau A, Couderc M, Le Bizec B, Elie P, Herrenknecht C, Mouneyrac C, Poirier L. Dioxin-like, non-dioxin like PCB and PCDD/F contamination in European eel (Anguilla anguilla) from the Loire estuarine continuum: spatial and biological variabilities. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 472:562-571. [PMID: 24317164 DOI: 10.1016/j.scitotenv.2013.11.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 11/06/2013] [Accepted: 11/06/2013] [Indexed: 06/02/2023]
Abstract
To characterize the eel contamination by dioxin-like (dl) and non dioxin-like (ndl) polychlorinated biphenyls (PCBs) and polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs), sixty-two eels from the Loire estuary (France) were analyzed. PCB contamination significantly increased from glass eel stage (3.71 ± 1.85 and 15.2 ± 4.2 ng g(-1) dw) to other life stages (for yellow eels: 62.8 ± 34.4 and 382 ± 182 ng g(-1) dw; for silver eels: 93.7 ± 56.3 and 463 ± 245 ng g(-1) dw respectively for dl and ndl-PCBs). An inter-site variability based on PCB levels and profiles was observed among the three studied sites. For glass eels, the profile was mainly characterized by less chlorinated PCBs contrary to the other eels, displaying a different bioaccumulation pathway. Overall, the contamination level in the eels from this estuary was shown to be low for PCDD/Fs and intermediate for dl and ndl-PCBs, compared to other international/national areas. However, more than 60% of the studied silver eels displayed higher values for PCDD/F and dl-PCB WHO2005 TEQ than the EU permissible level of 10 pg g(-1) ww. This statement suggests a potential exposure to PCBs through eel consumption, especially with silver eels, and also points out apparent contamination that could eventually affect the reproductive success of the species.
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Affiliation(s)
| | - A Zalouk-Vergnoux
- Université de Nantes, MMS, EA 2160, 9 rue Bias, Nantes F-44322, France
| | - A Vénisseau
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes F-44307, France
| | - M Couderc
- Université de Nantes, MMS, EA 2160, 9 rue Bias, Nantes F-44322, France
| | - B Le Bizec
- LUNAM Université, Oniris, Laboratoire d'Étude des Résidus et Contaminants dans les Aliments (LABERCA), Nantes F-44307, France
| | - P Elie
- IRSTEA, 50 avenue de Verdun, Gazinet, Cestas F-33612, France
| | - C Herrenknecht
- Université de Nantes, MMS, EA 2160, 9 rue Bias, Nantes F-44322, France
| | - C Mouneyrac
- Université Catholique de l'Ouest, IBEA, CEREA, 44 rue Rabelais, Angers F-49008, France
| | - L Poirier
- Université de Nantes, MMS, EA 2160, 9 rue Bias, Nantes F-44322, France
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