Occurrence, spatial distribution, sources, and risks of polychlorinated biphenyls and heavy metals in surface sediments from a large eutrophic Chinese lake (Lake Chaohu)
Occurrence, spatial distribution, sources, and risks of polychlorinated biphenyls and heavy metals in surface sediments from a large eutrophic Chinese lake (Lake Chaohu)
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中国大型富营养化湖泊（巢湖）表层沉积物中多氯联苯和重金属的存在、空间分布、来源和风险
DOI：
10.1007/s11356-015-6001-6
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发表时间：
2016-01
影响因子：
5.8
通讯作者：
Xu Fu-Liu
中科院分区：
文献类型：
--
作者：
He Wei;Bai Ze-Lin;Liu Wen-Xiu;Kong Xiang-Zhen;Yang Bin;Yang Chen;Jorgensen Sven Erik;Xu Fu-Liu
以我国五大淡水湖之一的巢湖为研究对象，分析了巢湖表层沉积物中多氯联苯（PCBs）和重金属污染的赋存状态、空间分布、来源及风险。巢湖中PCBs的总浓度为672 pg g− 1干重（dw），范围为7至3999 pg g− 1 dw，低于世界其他水体。除Sr、B和In外，大多数重金属在所有采样点都被检测到。Al、Fe、Ca、Mn、Sr、Co、Zn、Cd、Pb和Hg的浓度与全球其他湖泊报告的浓度相似。K、Mg、Na、Li、Ga和Ag的浓度高于平均值，而Cr、Ni和Cu的浓度低于平均值。聚类分析（CA）和正矩阵分解（PMF）对PCBs的源解析结果基本一致。PMF分析结果表明，工业PCBs和微生物降解的PCBs分别占PCBs总量的34.2%和65.8%，其中自然和人为来源的PCBs分别占38.1%和61.8%。CA指出，一些有毒重金属（例如，Cd、In、Tl、Hg）与Ca-Na-Mg矿物共生，而与Fe-Mn矿物共生。热解技术揭示的有机质与重金属之间的不相关性可能是由于有机质与矿物之间存在竞争吸附。PCBs和重金属在无有机氯农药（OCPs）存在的情况下，与多环芳烃（PAHs）和多溴联苯醚（PBDEs）存在耦合排放。没有沉积物样本超过二恶英类多氯联苯（dl-PCBs）的毒性阈值，设定为20 pg毒性当量（TEQ）g−1（最大dl-PCBs，10.9 pg TEQ g−1）。然而，银，镉和汞的浓度在环境问题的水平。针对饮用水源地沉积物受到外来重金属污染的威胁，提出了保护饮用水源地沉积物的基本措施。
Surface sediment from large and eutrophic Lake Chaohu was investigated to determine the occurrence, spatial distribution, sources, and risks of polychlorinated biphenyls (PCBs) and heavy metals in one of the five biggest freshwater lakes in China. Total concentration of PCBs (Σ34PCBs) in Lake Chaohu was 672 pg g−1dry weight (dw), with a range of 7 to 3999 pg g−1dw, which was lower than other water bodies worldwide. The majority of heavy metals were detected at all sampling locations, except for Sr, B, and In. Concentrations of Al, Fe, Ca, Mn, Sr, Co, Zn, Cd, Pb, and Hg were similar to that reported for other lakes globally. Concentrations of K, Mg, Na, Li, Ga, and Ag were greater than the average, whereas those of Cr, Ni, and Cu were lower. Cluster analysis (CA) and positive matrix factorization (PMF) yielded accordant results for the source apportionment of PCBs. The technical PCBs and microbial degradation accounted for 34.2 % and 65.8 % of total PCBs using PMF, and PMF revealed that natural and anthropogenic sources of heavy metals accounted for 38.1 % and 61.8 %, respectively. CA indicated that some toxic heavy metals (e.g., Cd, In, Tl, and Hg) were associated with Ca–Na–Mg minerals rather than Fe–Mn minerals. The uncorrelated results between organic matter revealed by pyrolysis technology and heavy metals might be caused by the existence of competitive adsorption between organic matter and minerals. PCBs and heavy metals were coupling discharge without organochlorine pesticides (OCPs), but with polycyclic aromatic hydrocarbons (PAHs) and polybrominated diphenyl ethers (PBDEs). No sediment sample exceeded the toxic threshold for dioxin-like PCBs (dl-PCBs) set at 20 pg toxicity equivalency quantity (TEQ) g−1, (max dl-PCBs, 10.9 pg TEQ g−1). However, concentrations of Ag, Cd, and Hg were at levels of environmental concern. The sediment in the drinking water source area (DWSA) was threatened by heavy metals from other areas, and some fundamental solutions were proposed to protect the DWSA.
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DOI：
10.1016/j.scitotenv.2013.05.049
发表时间：
2013-09
期刊：
The Science of the total environment
影响因子：
--
作者：
Wei He;Ning Qin;Xiangzhen Kong;Wenxiu Liu;Qi-Shuang He;Huiling Ouyang;Chen Yang;Yujiao Jiang;
通讯作者：
Wei He;Ning Qin;Xiangzhen Kong;Wenxiu Liu;Qi-Shuang He;Huiling Ouyang;Chen Yang;Yujiao Jiang;
长江武汉流域干流、支流及湖泊沉积物中重金属分布及形态
影响因子：
13.6
作者：
Yang, Zhifeng;Wang, Ying;Tang, Zhenwu
通讯作者：
Tang, Zhenwu
影响因子：
11.4
作者：
Eljarrat, E;Caixach, J;Ginebreda, A
通讯作者：
Ginebreda, A
影响因子：
5
作者：
DAVIS, JA
通讯作者：
DAVIS, JA
DOI：
10.1080/00984109708984055
发表时间：
1997-10
期刊：
Journal of toxicology and environmental health
影响因子：
--
作者：
B. Finley;Kim R. Trowbridge;Scott Burton;D. Proctor;J. Panko;D. Paustenbach
通讯作者：
B. Finley;Kim R. Trowbridge;Scott Burton;D. Proctor;J. Panko;D. Paustenbach