Residues and sources of HCHs and DDTs in the sediments of land-based sewage outlet to the Zhanjiang Bay, China

Zhao Lirong; Shi Yuzhen; Zhao Hui; Zhang Jibiao; Sun Xingli

doi:10.1007/s13131-019-1432-4

湛江湾陆源入海排污口沉积物中HCHs和DDTs的残留和来源

doi: 10.1007/s13131-019-1432-4

广东海洋大学化学与环境学院, 湛江, 524088

基金项目: The International Scientific & Technological Cooperation Project of Department of Education of Guangdong Province, China under contract No. 2015KGJHZ017; the National Natural Science Foundation of China under contract Nos 41376125 and 41006070; the "First-class" Special Funds of Guangdong Ocean University under contract No. 231419018.

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- 收稿日期: 2018-02-27

Residues and sources of HCHs and DDTs in the sediments of land-based sewage outlet to the Zhanjiang Bay, China

College of Chemistry and Environmental Science, Guangdong Ocean University, Zhanjiang 524088, China

摘要

摘要: 由于含有DDT的防污漆和林丹曾在我国使用，一些渔港`DDTs和HCHs的残留严重，湛江湾作为我国南方重要的渔港和养殖地区相关研究较少。为评估湛江湾HCHs和DDTs的残留状况和来源，本研究调查分析了湛江湾11个陆源入海排污口沉积物中HCHs和DDTs的含量、空间分布和来源。自1980s以来，研究区域HCHs的残留量明显下降，但DDTs含量变化较小，甚至在一些站位出现较高值。HCHs和DDTs组成和特征比值显示HCHs可能来自湛江湾周围土壤中残留的HCHs和近期少量的输入，DDTs可能来自工业DDTs的历史残留和含有DDTs的防污漆。根据沉积物质量指导，DDTs对海洋环境具有一定生态风险，可能对海洋生物体产生危害。本研究表明林丹和含有DDT的防污漆在湛江可能还有使用，相关部门应该加强控制管理，以及对现有污染区域的治理。
- 湛江湾 /
- 沉积物 /
- HCHs /
- DDTs
Abstract: Due to the large usage of DDT-containing antifouling paints and lindane in China, heavy residuals of DDTs and HCHs have been found in many fishing harbors, but there is lack of studies on this issue for the Zhanjiang Bay which is an important fishing harbor and mariculture zone in South China. To evaluate the pollution status and sources of HCHs and DDTs in the Zhanjiang Bay, the concentrations, spatial distributions and sources in the sediments of 11 land-based sewage outlets to the Zhanjiang Bay were investigated. Since the 1980s, HCHs residuals had obviously decreased in studied areas, but DDTs had little change, even abnormally high levels were found in some sites. The content percentages and diagnostic ratios of HCHs isomers and DDTs showed that the source of HCHs was derived from soils around the bay and recent input of lindane, and DDTs were from historical residues of technical DDTs and fresh input of DDT-containing antifouling paints on fishing ships. Based on sediment quality guidelines, DDTs would be of more concern for the ecotoxicological risk on marine environment and adverse effects on benthonic organisms. This study indicated that lindane and DDT-containing products may be still used in some places of Zhanjiang City. It should be urgent to control their usage and clean the DDTs-contaminated sites by the local government.
- Zhanjiang Bay /
- sediment /
- DDTs /
- HCHs

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参考文献(41)

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湛江湾陆源入海排污口沉积物中HCHs和DDTs的残留和来源

doi: 10.1007/s13131-019-1432-4

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Residues and sources of HCHs and DDTs in the sediments of land-based sewage outlet to the Zhanjiang Bay, China

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