Temporal trends of polychlorinated biphenyls, polybrominated diphenyl ethers, and perfluorinated compounds in Chinese sturgeon (Acipenser sinensis) eggs (1984-2008).
Identifieur interne : 000109 ( Main/Merge ); précédent : 000108; suivant : 000110Temporal trends of polychlorinated biphenyls, polybrominated diphenyl ethers, and perfluorinated compounds in Chinese sturgeon (Acipenser sinensis) eggs (1984-2008).
Auteurs : Sun Jianxian [République populaire de Chine] ; Peng Hui ; Hu JianyingSource :
- Environmental science & technology [ 1520-5851 ] ; 2015.
Descripteurs français
- Wicri :
- geographic : République populaire de Chine.
English descriptors
- KwdEn :
- MESH :
- chemical , analysis : Fluorocarbons, Halogenated Diphenyl Ethers, Polybrominated Biphenyls, Polychlorinated Biphenyls.
- geographic : China.
- chemistry : Ovum.
- methods : Environmental Monitoring.
- Animals, Fishes, Humans, Longitudinal Studies.
Abstract
Because investigation on the temporal trends of persistent halogenated compounds (PHCs) is necessary to predict their future impacts on the environment and human health and evaluate the effectiveness of regulations on their production and usage, it is of concern to investigate annual temporal trends of PHCs in biota samples. This study examined the temporal trends of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and perfluorinated compounds (PFCs) in Chinese sturgeon (Acipenser sinensis) eggs over a period of 25 years (1984-2008), and 62 PCBs (19.2-1030 ng/g dw for total PCBs), 16 PBDEs (4.7-572 ng/g dw for total PBDEs), and 14 PFCs (26-46 ng/g dw for total PFCs) were detected. Although a decreasing temporal trend was observed for total PCBs with annual reduction rate of 3.4% (ρ = 0.005), a clear break point was observed around 1991, indicating their continuing emission in the 1980s in China. All major PBDEs showed increasing temporal trends, with annual change rates at 3.5-10.2% over the 25 years, but a sharp decreasing trend was observed after 2006, indicating a rapid response to the banning of PBDE usage in China in 2004. The greatest annual rate of increase was observed for BDE-28 (10.2%) followed by BDE-100 (7.7%), which would be due to metabolism input from higher brominated PBDEs. Significantly increasing temporal trends were observed for all PFCs, and the annual rates of increase were 7.9% and 5.9% for total perfluorinated carboxylic acids and perfluorooctanesulfonate (PFOS), respectively. A peak concentration for PFOS was observed in 1989, which may be related to the import history of PFCs in China. The present study is the first report of systematic temporal trends of PHCs in biota samples from China and shows that regulatory policy is needed to reduce their potential health and ecological risk in China considering the increasing temporal trends of PBDEs and PFCs.
DOI: 10.1021/es505378b
PubMed: 25558919
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<author><name sortKey="Jianxian, Sun" sort="Jianxian, Sun" uniqKey="Jianxian S" first="Sun" last="Jianxian">Sun Jianxian</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, China.</nlm:affiliation>
<country xml:lang="fr">République populaire de Chine</country>
<wicri:regionArea>Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871</wicri:regionArea>
<placeName><settlement type="city">Pékin</settlement>
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<author><name sortKey="Hui, Peng" sort="Hui, Peng" uniqKey="Hui P" first="Peng" last="Hui">Peng Hui</name>
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<author><name sortKey="Jianying, Hu" sort="Jianying, Hu" uniqKey="Jianying H" first="Hu" last="Jianying">Hu Jianying</name>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Temporal trends of polychlorinated biphenyls, polybrominated diphenyl ethers, and perfluorinated compounds in Chinese sturgeon (Acipenser sinensis) eggs (1984-2008).</title>
<author><name sortKey="Jianxian, Sun" sort="Jianxian, Sun" uniqKey="Jianxian S" first="Sun" last="Jianxian">Sun Jianxian</name>
<affiliation wicri:level="1"><nlm:affiliation>Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University , Beijing 100871, China.</nlm:affiliation>
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<author><name sortKey="Jianying, Hu" sort="Jianying, Hu" uniqKey="Jianying H" first="Hu" last="Jianying">Hu Jianying</name>
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<series><title level="j">Environmental science & technology</title>
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<term>Environmental Monitoring (methods)</term>
<term>Fishes</term>
<term>Fluorocarbons (analysis)</term>
<term>Halogenated Diphenyl Ethers (analysis)</term>
<term>Humans</term>
<term>Longitudinal Studies</term>
<term>Ovum (chemistry)</term>
<term>Polybrominated Biphenyls (analysis)</term>
<term>Polychlorinated Biphenyls (analysis)</term>
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<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Fluorocarbons</term>
<term>Halogenated Diphenyl Ethers</term>
<term>Polybrominated Biphenyls</term>
<term>Polychlorinated Biphenyls</term>
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<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Ovum</term>
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<term>Fishes</term>
<term>Humans</term>
<term>Longitudinal Studies</term>
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<front><div type="abstract" xml:lang="en">Because investigation on the temporal trends of persistent halogenated compounds (PHCs) is necessary to predict their future impacts on the environment and human health and evaluate the effectiveness of regulations on their production and usage, it is of concern to investigate annual temporal trends of PHCs in biota samples. This study examined the temporal trends of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and perfluorinated compounds (PFCs) in Chinese sturgeon (Acipenser sinensis) eggs over a period of 25 years (1984-2008), and 62 PCBs (19.2-1030 ng/g dw for total PCBs), 16 PBDEs (4.7-572 ng/g dw for total PBDEs), and 14 PFCs (26-46 ng/g dw for total PFCs) were detected. Although a decreasing temporal trend was observed for total PCBs with annual reduction rate of 3.4% (ρ = 0.005), a clear break point was observed around 1991, indicating their continuing emission in the 1980s in China. All major PBDEs showed increasing temporal trends, with annual change rates at 3.5-10.2% over the 25 years, but a sharp decreasing trend was observed after 2006, indicating a rapid response to the banning of PBDE usage in China in 2004. The greatest annual rate of increase was observed for BDE-28 (10.2%) followed by BDE-100 (7.7%), which would be due to metabolism input from higher brominated PBDEs. Significantly increasing temporal trends were observed for all PFCs, and the annual rates of increase were 7.9% and 5.9% for total perfluorinated carboxylic acids and perfluorooctanesulfonate (PFOS), respectively. A peak concentration for PFOS was observed in 1989, which may be related to the import history of PFCs in China. The present study is the first report of systematic temporal trends of PHCs in biota samples from China and shows that regulatory policy is needed to reduce their potential health and ecological risk in China considering the increasing temporal trends of PBDEs and PFCs.</div>
</front>
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