Chen Wei-Ping, Peng Cheng-Wei, Yang Yang, Wu Yu-Mei
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Huan Jing Ke Xue. 2018 Jan 8;39(1):117-122. doi: 10.13227/j.hjkx.201705130.
Pollution from organochlorine (OCP) and organophosphorus (OPP) pesticides in groundwater is a key issue for water resource protection. Sixteen kinds of OCP and six kinds of OPP pesticides were detected in 18 groundwater samples determined by GC-MS. Results showed that seven kinds of OPCs and two kinds of OPPs were found in the groundwater in Beijing. Among the OCPs, there were mainly hexachlorobenzene (HCB), hemochromatosis (HCH), and dichlorodiphenyltrichloroethane (DDT), with maximum values of, respectively, 82.4, 193, and 158 ng·L. Among the OPPs, there were -dimethyl--2,2-dichlorovinylphosphate and -dimethyl methylcarbamoylmethyl phosphorodithioate, with maximum values of 7.1 ng·L and 17.7 ng·L, respectively. The OCPs and OPPs were found in the sewage irrigation areas. The results of a probabilistic risk assessment showed that the non-carcinogenic and carcinogenic risks of OCPs and OPPs within the drinking water in Beijing had been controlled, that risks from OCPs were higher, and that women were more sensitive to the toxicity of the pesticides. The monitoring of HCH and DDT in the groundwater should be implemented.
地下水中有机氯（OCP）和有机磷（OPP）农药污染是水资源保护的关键问题。采用气相色谱 - 质谱联用仪（GC - MS）对18个地下水样本进行检测，共检出16种有机氯农药和6种有机磷农药。结果表明，北京地区地下水中检出7种有机氯农药和2种有机磷农药。在有机氯农药中，主要有六氯苯（HCB）、血色素沉着症（HCH）和二氯二苯基三氯乙烷（DDT），其最大值分别为82.4、193和158 ng·L。在有机磷农药中，有 - 二甲基 - - 2,2 - 二氯乙烯基磷酸酯和 - 二甲基甲氨基甲酰甲基二硫代磷酸酯，最大值分别为7.1 ng·L和17.7 ng·L。这些有机氯和有机磷农药在污水灌溉区被检出。概率风险评估结果表明，北京地区饮用水中有机氯和有机磷农药的非致癌和致癌风险已得到控制，有机氯农药的风险更高，且女性对农药毒性更敏感。应加强对地下水中六氯环己烷（HCH）和滴滴涕（DDT）的监测。
