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中国宜昌市丹水河水中 OCPs 和 PAHs 的分布及潜在来源。

Distribution and Potential Sources of OCPs and PAHs in Waters from the Danshui River Basin in Yichang, China.

机构信息

State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430078, China.

School of Environmental Studies, China University of Geosciences, Wuhan 430078, China.

出版信息

Int J Environ Res Public Health. 2021 Dec 27;19(1):263. doi: 10.3390/ijerph19010263.

DOI:10.3390/ijerph19010263
PMID:35010525
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8782434/
Abstract

To investigate the concentrations, spatial distribution, potential sources and mass fluxes of organochlorine pesticides (OCPs) and polycyclic aromatic hydrocarbons (PAHs) in waters from the Danshui River Basin, a total of 20 water samples were collected and analyzed from a karstic river in Western Hubei of Central China. The average concentrations of total OCPs and PAHs in the river water were 4719 pg·L and 26.2 ng·L, respectively. The characteristic ratios of different isomers and the composition analysis of individual OCPs and PAHs revealed that HCHs originated from a mixed input of technical HCHs and Lindane, DDTs were mainly from technical DDTs, and PAHs mainly originated from biomass and coal combustion. The mass flux analysis showed that PAHs had a higher emission and heavier burden than OCPs in the Danshui River Basin. OCPs and PAHs emitted from agricultural or other human activities could enter the groundwater and then be transported to the surface/river water in the karst area. The adsorption of OCPs and PAHs by particles and the sedimentation of particles could be the primary processes to intercept these pollutants in the water of the karstic river system.

摘要

为了研究丹水河流域水中有机氯农药（OCPs）和多环芳烃（PAHs）的浓度、空间分布、潜在来源和质量通量，本研究从中西部湖北喀斯特河流中采集并分析了 20 个水样。河水中总 OCPs 和 PAHs 的平均浓度分别为 4719 pg·L 和 26.2 ng·L。不同异构体的特征比以及个别 OCPs 和 PAHs 的组成分析表明，HCHs 来源于技术 HCHs 和林丹的混合输入，DDTs 主要来源于技术 DDTs，而 PAHs 主要来源于生物质和煤炭燃烧。质量通量分析表明，在丹水河流域，PAHs 的排放量和负荷均高于 OCPs。来自农业或其他人类活动的 OCPs 和 PAHs 可能会进入地下水，然后在喀斯特地区被输送到地表水/河水中。OCPs 和 PAHs 被颗粒吸附以及颗粒的沉降可能是拦截该喀斯特水系水中这些污染物的主要过程。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/df088eedea99/ijerph-19-00263-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/03d38fdc228f/ijerph-19-00263-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/e3c97417338f/ijerph-19-00263-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/cfdea485195c/ijerph-19-00263-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/398b8ca0c826/ijerph-19-00263-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/df088eedea99/ijerph-19-00263-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/03d38fdc228f/ijerph-19-00263-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/e3c97417338f/ijerph-19-00263-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/cfdea485195c/ijerph-19-00263-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/398b8ca0c826/ijerph-19-00263-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/60f7/8782434/df088eedea99/ijerph-19-00263-g005.jpg

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