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.
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
J Environ Sci (China). 2014 Nov 1;26(11):2198-206. doi: 10.1016/j.jes.2014.09.002. Epub 2014 Sep 11.
Twelve perfluoroalkyl substances (PFASs) and nine organochlorine pesticides (OCPs) were quantified in surface sediments from the Huaihe River, China, along which there are intensive industrial and agricultural activities. Concentrations of PFASs ranged from 0.06 to 0.46ng/g dry weight (dw), and concentrations of OCPs ranged from 1.48 to 32.65ng/gdw. Compared with other areas in China, concentrations of PFASs were lesser than the national mean value, while concentrations of OCPs were moderate. Concentrations of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) ranged from n.d. (not detected) to 0.03 and n.d. to 0.10ng/gdw, respectively. Among the three groups of OCPs, mean concentrations of hexachlorocyclohexane and its isomers (HCHs), dichlorodiphenyltrichloroethane and its metabolites (DDTs) and hexachlorobenzene (HCB) were 5.62±4.35, 2.43±3.12 and 1.55±4.17ng/gdw, respectively. Concentrations of HCHs and DDTs decreased from upstream to downstream along the mainstream of the Huaihe River. When compared to sediment quality guidelines (SQGs), concentrations of HCHs, DDTs and HCB would pose adverse biological effects. In general, contamination by PFASs in the upstream of the Huaihe River was more severe than that in the downstream, which was mainly caused by interception from dams, locks and industrial emissions. And OCPs from tributaries, especially the Yinghe River and Wohe River, were higher than those from Huaihe mainstream, and primarily came from historical inputs.
在中国淮河流域，存在着密集的工业和农业活动，该流域的表层沉积物中定量检测到了 12 种全氟烷基物质（PFASs）和 9 种有机氯农药（OCPs）。PFASs 的浓度范围为 0.06-0.46ng/g 干重（dw），OCPs 的浓度范围为 1.48-32.65ng/gdw。与中国其他地区相比，PFASs 的浓度低于全国平均值，而 OCPs 的浓度则处于中等水平。全氟辛酸（PFOA）和全氟辛烷磺酸（PFOS）的浓度范围分别为未检出（n.d.）至 0.03ng/g 和 n.d. 至 0.10ng/gdw。在这三组 OCPs 中，六氯环己烷及其异构体（HCHs）、滴滴涕及其代谢物（DDTs）和六氯苯（HCB）的平均浓度分别为 5.62±4.35ng/gdw、2.43±3.12ng/gdw 和 1.55±4.17ng/gdw。HCHs 和 DDTs 的浓度从淮河流域的上游到下游逐渐降低。与沉积物质量基准（SQGs）相比，HCHs、DDTs 和 HCB 的浓度可能会对生物产生不利影响。总的来说，淮河流域上游的 PFASs 污染比下游更为严重，这主要是由于大坝、水闸和工业排放的截留造成的。而来自支流的 OCPs，特别是饮马河和涡河，高于来自淮河水系主流的 OCPs，主要来自历史输入。
