Pollution Characteristics and Risk Assessment of Typical POPs in Typical Drinking Water Sources in Wuhan

被引：0

作者：

Zhang K.-F. ^{[1
,2
,3
]}

Fu Q. ^{[1
,2
]}

Tu X. ^{[1
,2
]}

Chang S. ^{[1
,2
]}

Fan Y.-T. ^{[1
,2
]}

Sun X.-B. ^{[3
]}

Wang S.-J. ^{[1
,2
]}

机构：

[1] State Environmental Protection Key Laboratory of Drinking Water Source Protection, Chinese Research Academy of Environmental Sciences, Beijing

[2] National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Chinese Research Academy of Environmental Sciences, Beijing

[3] College of Forestry, Northeast Forestry University, Harbin

来源：

Huanjing Kexue/Environmental Science | 2021年 / 42卷 / 12期

关键词：

Changjiang River; Drinking water sources; Health risk; Persistent organic pollutants (POPs); Wuhan;

D O I：

10.13227/j.hjkx.202105156

中图分类号：

学科分类号：

摘要：

To identify the pollution characteristics and risk level of common persistent organic pollutants (POPs) in drinking water sources in Wuhan, solid-phase extraction-gas chromatography-mass spectrometry (SPE-GC-MS) was used to analyze 26 water samples from 18 drinking water sources located in the mainstream and tributaries of the Changjiang River, Wuhan. The concentrations of polycyclic aromatic hydrocarbons (PAHs), organochloride pesticides (OCPs), and polychlorinated biphenyls (PCBs) were measured, the pollution status of the common POPs was analyzed, and their health risks were assessed. The results showed the presence of PAHs in all the 26 samples. Except for benzo(k)fluoranthene, which had a detection rate of 88.46%, the detection rates of the other 15 PAHs were 100.00%. The detection range of ρ∑PAHs was 57.04-475.79 ng•L-1, with an average of 173.86 ng•L-1. The pollution levels of PAHs were overall low and the PAHs mainly comprised low and medium cyclic aromatic hydrocarbons derived from a mixed source, and dominated by petroleum derivatives. A total of eight OCPs were detected, and the range of ∑OCPs was ND-4.57 ng•L-1 with a mean concentration of 0.78 ng•L-1, which indicated that the concentration levels of OCPs were relatively low. A total of 24 types of PCBs were detected, and the range of ρ∑PCBs was ND-77.49 ng•L-1 with a mean of 9.88 ng•L-1. The PCBs mainly comprised refractory high-chlorinated biphenyls, and the concentrations of PCBs in some samples exceeded the limit of the surface water standard in China. Our results suggest that the concentration of HeptaCBs-180 should be continuously monitored in the future. The results of the health risk assessment showed that the carcinogenic risk indexes of PAHs and PCBs in our study area were in the range of 10-6 to 10-4, which may pose a potential carcinogenic risk to humans. The non-carcinogenic risk indexes of OCPs and PCBs were less than 1, and did not pose a non-carcinogenic risk to humans. © 2021, Science Press. All right reserved.

引用

页码：5836 / 5847

页数：11

共 47 条

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