溶解有机质对生物富集因子计算的影响: 以东江鱼体中多溴联苯醚的生物富集为例
Influence of Dissolved Organic Matter on Bioaccumulation Factor: A Case Study of Bioaccumulation of Polybrominated Diphenyl Ethers (PBDEs) in Fish from Dongjiang River
查看参考文献18篇
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文摘
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准确获取化合物的生物富集因子(BAF)对于判定化合物是否属于潜在毒害性污染物、评价其生态环境风险都具有重要的意义。为探究水体中溶解有机质(DOM)对BAF值的影响,以东江三角洲流域为研究区域,以多溴联苯醚(PBDEs)为目标化合物,研究了PBDEs各单体在3种鱼体中的富集特征。结果表明,PBDEs在3种鱼体中的浓度范围为42~ 825 ng·g~(-1)脂肪, log BAF值位于5.0~ 7.4之间。由于脱溴代谢的种间差异,3种鱼类表现出2种PBDE的组成模式。在缺乏脱溴代谢途径的鱼体内, log BAF与化合物辛醇/水分配系数(log K_(OW))之间存在统计意义上的抛物线关系。但当BAF进行DOM的校正之后,二者之间抛物线形式的相关性消失,而呈现出显著的正线性相关性。以往研究对BAF值在化合物的log K_(OW)达到一定程度后(7~ 8附近)出现下降的解释是高K_(OW)化合物较大的分子体积降低了其穿过生物膜的可能性,但我们的研究结果表明,这种下降很可能是由于忽视了水体中DOM影响的结果。 |
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其他语种文摘
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Bioaccumulation factor (BAF) plays key role in identification of bioaccumulative substance and in assessment of chemical risk. In order to reveal the effect of dissolved organic matter (DOM) on the calculated bioaccumulation factor, water and fish samples were collected from Dongjiang River and polybrominated diphenyl ethers (PBDEs) were measured. The concentrations of PBDEs in three fish species varied from 42 to 825 ng·g~(-1) lipid weight and the BAFs were between 5.0 and 7.4. There are two distinct PBDE congener profiles among three fish species due to the difference in metabolic debromination. A statistically significant parabolic relationship between log BAF and log K_(OW) was found for fish exhibited no metabolic debromination. However, after correction with DOM, the log BAF was positively correlated with log K_(OW). Previous studies demonstrated that the BAF decreases with increasing log K_(OW) when log K_(OW) of chemical was larger than certain values such as 7 or 8. It is suggested that the larger molecular size of chemical block or retard the chemical to penetrate cell membrane. However, the results of the present study indicated that the decreasing trend of BAF with increasing lipophilicity of chemicals can be ascribed to the influence of DOM on the calculated BAF. |
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来源
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生态毒理学报
,2016,11(2):188-193 【核心库】
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DOI
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10.7524/AJE.1673-5897.20151014002
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关键词
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多溴联苯醚
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溶解有机质
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东江
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生物富集因子
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地址
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中国科学院广州地球化学研究所, 有机地球化学国家重点实验室;;广东省环境资源利用与保护重点实验室, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1673-5897 |
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学科
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环境科学基础理论 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:5766935
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参考文献 共
18
共1页
|
|
1.
Arnot J A. A review of bioconcentration factor (BCF) and bioaccumulation factor (BAF) assessments for organic chemicals in aquatic organisms.
Environment Review,2006,14:257-297
|
CSCD被引
47
次
|
|
|
|
|
2.
UNEP.
UNEP Stockholm Convention on Persistent Organic Pollutants
|
CSCD被引
1
次
|
|
|
|
|
3.
Dimitrov S. Base-line model for identifying the bioaccumulation potential of chemicals.
SAR and QSAR in Environmental Research,2005,16:531-554
|
CSCD被引
3
次
|
|
|
|
|
4.
Opperhuizen A. Relationship between bioconcentration in fish and steric factors of hydrophobic chemicals.
Chemosphere,1985,14:1871-1896
|
CSCD被引
5
次
|
|
|
|
|
5.
European Chemicals Agency.
Guidance on Information Requirements and Chemical Safety Assessment Chapter R. 11: PBT/vPvB Assessment,2014:54
|
CSCD被引
1
次
|
|
|
|
|
6.
Arnot J A. Molecular size cutoff criteria for screening bioaccumulation potential: Fact or fiction?.
Intergrated Environmental Assement and Management,2009,6(2):210-224
|
CSCD被引
1
次
|
|
|
|
|
7.
Organization for Economic Co-operation and Development (OECD).
Bioaccumulation in Fish: Aqueous and Dietary Exposure. OECD Guidelines for Testing of Chemicals 305,2012
|
CSCD被引
1
次
|
|
|
|
|
8.
Chen M Y. The factors controlling the partitioning of polybrominated diphenyl ethers and polychlorinated biphenyls in the water-column of the Pearl River Estuary in South China.
Marine Pollution Bulletin,2011,62:29-35
|
CSCD被引
11
次
|
|
|
|
|
9.
Xiang C H. Polybrominated diphenyl ethers in biota and sediments of the Pearl River Estuary, South China.
Environmental Toxicology Chemistry,2007,26:616-623
|
CSCD被引
20
次
|
|
|
|
|
10.
Burkhard L P. Estimating dissolved organic carbon partition coefficients for nonionic organic chemicals.
Environmental Science and Technology,2000,34:4663-4668
|
CSCD被引
8
次
|
|
|
|
|
11.
Streets S S. Partitioning and bioaccumulation of PBDEs and PCBs in Lake Michigan.
Environmental Science and Technology,2006,40:7263-7269
|
CSCD被引
24
次
|
|
|
|
|
12.
Wang Y W. Effect of municipal sewage treatment plant effluent on bioaccumulation of polychlorinated biphenyls and polybrominated diphenyl ethers in the recipient water.
Environmental Science and Technology,2007,41:6026-6032
|
CSCD被引
22
次
|
|
|
|
|
13.
Law K. Bioaccumulation and trophic transfer of some brominated flame retardants in a Lake Winnipeg (Canada) food web.
Environmental Toxicology Chemistry,2006,25:2177-2186
|
CSCD被引
27
次
|
|
|
|
|
14.
Luo X J. Application of compound- specific stable carbon isotope analysis for the biotransformation and trophic dynamics of PBDEs in a feeding study with fish.
Environmental Pollution,2013,176:36-41
|
CSCD被引
2
次
|
|
|
|
|
15.
Zhang Y. Contaminant pattern and bioaccumulation of legacy and emerging organhalogen pollutants in the aquatic biota from an e-waste recycling region in South China.
Environmental Toxicology and Chemistry,2010,29:852-859
|
CSCD被引
14
次
|
|
|
|
|
16.
Zeng Y H. Gastrointestinal absorption, metabolic debromination and hydroxylation of PBDE in common carp exposed to three commercial PBDE mixtures.
Environmental Toxicology Chemistry,2012,31:731-738
|
CSCD被引
4
次
|
|
|
|
|
17.
Thomann R V. Bioaccumulation model of organic chemical distribution in aquatic food chains.
Environmental Science and Technology,1989,23:699-707
|
CSCD被引
7
次
|
|
|
|
|
18.
Wu J P. Bioaccumulation of polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in wild aquatic species from an electronic waste (e-waste) recycling site in South China.
Environment International,2008,34:1109-1113
|
CSCD被引
58
次
|
|
|
|
|
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