Distributions and Risk Assessment of Organochlorine Pesticides (OCPs) in Tanghe Groundwater

doi:10.13209/j.0479-8023.2021.014

Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2021, Vol. 57 ›› Issue (2): 283-290.DOI: 10.13209/j.0479-8023.2021.014

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Distributions and Risk Assessment of Organochlorine Pesticides (OCPs) in Tanghe Groundwater

ZHANG Min¹, WANG Ting², YANG Chao³, NI Jinren^1,2,†

1. School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055
2. Beijing New Advanced Treatment Technology Research Center, Department of Environmental Engineering, Peking University, Beijing 100871
3. School of Water Conservancy and Hydropower, Xi’an University of Technology, Xi’an 710048

Received:2020-03-02 Revised:2020-03-25 Online:2021-03-20 Published:2021-03-20
Contact: NI Jinren, E-mail: jinrenni(at)pku.edu.cn

唐河地下水有机氯农药(OCPs)的分布特征及风险评估

张敏¹, 王婷², 杨超³, 倪晋仁^1,2,†

1. 北京大学深圳研究生院环境与能源学院, 深圳 518055 2. 北京大学环境工程系, 北京市新型污水深度处理工程技术研究中心, 北京 100871 3. 西安理工大学水利水电学院, 西安 710048

通讯作者: 倪晋仁, E-mail: jinrenni(at)pku.edu.cn
基金资助:
国家水体污染控制与治理重大专项(2018ZX07110)资助

Abstract

Abstract:

In order to evaluate the pollution status of organochlorine pesticides (OCPs) in the groundwater around Tanghe Wastewater Reservoir in Xiong’an New area, the authors analyzed OCPs residues in 36 groundwater samples collected in 2019. The composition characteristics and sources of HCHs and DDTs were preliminarily determined, and their health risks were assessed. The results suggested that Tanghe groundwater showed lower OCPs pollution with total amount of nd–45.60 ng/L and a detection rate of 77.78%, of which HCHs was the greatest distributor. The lower OCPs contents were partially attributed to implementations of the ecological sewage treatment project in 2018. Furthermore, both HCHs and DDTs were mainly historical residues originated from agricultural source, and DDTs probably decomposed into aerobic metabolite DDE. Overall, the noncarcinogenic and carcinogenic risks of OCPs were very low, posing no threat to human health though infants were more sensitive.

Key words: Tanghe Wastewater Reservoir, groundwater, organochlorine pesticides (OCPs), pollution source, risk assessment

摘要：

为评估雄安新区唐河污水库周边地下水有机氯农药(OCPs)污染状况, 对2019年采集的36个地下水样品中OCPs进行分析, 初步确定六氯环己烷(HCHs)和双对氯苯基三氯乙烷(DDTs)的组成特征和来源, 并对其健康风险进行评价。结果表明: 1) 唐河地下水OCPs污染程度较轻, OCPs总量为nd~45.60 ng/L, 检出率为77.78%, HCHs贡献最大, 与 2018 年完成的唐河污水库一期生态治理工程有关; 2) 唐河地下水中 HCHs和DDTs主要来自历史残留, HCHs主要来源于农业, DDTs在地下水体中主要产生好氧代谢产物DDE; 3) 唐河地下水OCPs致癌风险与非致癌风险均较低, 婴儿为敏感受体, 总体上对人体健康不构成威胁。

关键词: 唐河污水库, 地下水, 有机氯农药(OCPs), 来源解析, 风险评估

ZHANG Min, WANG Ting, YANG Chao, NI Jinren. Distributions and Risk Assessment of Organochlorine Pesticides (OCPs) in Tanghe Groundwater[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2021, 57(2): 283-290.

张敏, 王婷, 杨超, 倪晋仁. 唐河地下水有机氯农药(OCPs)的分布特征及风险评估[J]. 北京大学学报自然科学版, 2021, 57(2): 283-290.

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Distributions and Risk Assessment of Organochlorine Pesticides (OCPs) in Tanghe Groundwater

唐河地下水有机氯农药(OCPs)的分布特征及风险评估

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