| 北京官厅水库-永定河水系水体中持久性有机氯农药污染 |
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| 引用本文： | 康跃惠,刘培斌,王子健,吕怡兵,李其军.北京官厅水库-永定河水系水体中持久性有机氯农药污染[J].湖泊科学,2003,15(2):125-132. |
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| 作者姓名： | 康跃惠 刘培斌 王子健 吕怡兵 李其军 |
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| 作者单位： | 1. 中国科学院生态环境研究中心环境水化学国家重点实验室,北京,100085
2. 北京市水利科学研究所,北京,100044 |
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| 基金项目： | 国家重点基础研究发展规划项目(NKBRSF-G1999045710)，北京市重大科技项目(9550610400)联合资助. |
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| 摘 要： | 报道了官厅水库-永定河水系中持久性有机氯农药的污染水平,研究发现在水体中存在六六六(HCHs), 滴滴涕(DDTs), 七氯等在内的有机氯污染物,在所有13个采样点的水样中,18种有机氯农药的浓度为4.2-96.9 ng/L,其中六六六、滴滴涕的含量分别为0.09-53.5ng/L和nd-46.8 ng/L.对污染来源进行分析,发现除了主要是源于历史上农田中有机氯农药的残留外,近期可能有新的农药污染源进入水环境,如林丹和三氯杀螨醇的使用可能造成了新的有机氯农药污染.和国内主要河流相比,官厅水库-永定河水系中有机氯农药的污染属轻度污染.
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| 关 键 词： | 官厅水库 永定河 有机氯农药 污染 空间分布 |
| 收稿时间： | 9/2/2002 12:00:00 AM |
| 修稿时间： | 2002年9月2日 |
Persistent Organochlorinated Pesticides in Water from Guanting Reservoir and Yongdinghe River, Beijing |
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| KANG Yuehui,LIU Peibin,WANG Zijian,LV Yibing and LI Qijun.Persistent Organochlorinated Pesticides in Water from Guanting Reservoir and Yongdinghe River, Beijing[J].Journal of Lake Science,2003,15(2):125-132. |
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| Authors: | KANG Yuehui LIU Peibin WANG Zijian LV Yibing and LI Qijun |
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| Institution: | KANG Yuehui1,LIU Peibin2,WANG Zijian1*,L Yibing1 & LI Qijun2 |
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| Abstract: | In the paper, concentrations of 18 persistent organochlorinated pesticides in 12 water samples from Guanting Reservoir/Yongdinghe River Watershed, Beijing, were analyzed by using gas chromatography and electron capture detector (GC-ECD). Pentachloro-nitrobenzene (PCNB) was used as internal standard and 2,4,5,6-tetrachloro-m-xylene (TMX) and PCB-209 were used as surrogate. The method recoveries were ranged from 85% to 110%,with a standard deviation less than 10%. Persistent organic pollutants, such as HCHs, DDTs, and heptachlor were detected in the waters. Among 13 sampling locations, the total concentrations of 13 pesticides under investigation ranged from 4.2-96.9 ng/L. Among the 13 pesticides, concentration of HCHs and DDTs were 0.09-53.5ng/L and nd-46.8 ng/L, respectively. In comparison with concentrations of HCHs in other rivers in China, concentration of HCHs in this watershed were lower than those found in the Zhujiang River (Pearl River), Songhuajiang River, Haihe River and Baiyangdian Catchments and similar to those found in the Yangtze River and middle reaches of the Liaohe River. Con-centrations of DDTs in this watershed were higher than those found in the Zhujiang River and Haihe River and silimar to those found in the Yangtze River and Jiulongjiang River. The origins of organochlorinated pesticides in the watershed were investigated according to the geographical distribution and the isomers characteristics for HCHs and metabolites of DDTs. The ratios of a-HCH to g-HCH were ranged from 0.29-1.38 and indicated the new pollution sources in the watershed, for example the continual application of lindan. The origin of DDTs should come from industrial sources along the Yanghe River. For example, factories manufacturing organochlorinated pes-ticides in recent years could discharge wastewater-containing DDTs into the river. Our results showed that there were historical residues and recent discharges of organochlorinated pesticides into the watershed. |
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| Keywords: | Guanting Reservoir Yongdinghe River chlorinated pesticides pollution spatial distribution |
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