本文研究了黄浦江水相中有机氯农药的浓度分布、组成特征和污染来源;分析黄浦江水体中有机氯农药(OCPs)含量的时空变化;在黄浦江水相样品中,除了甲氧氯在所有样品中均未检出外,其他20种有机氯农药在样品中均被检出,在所有水样中的OCPs浓度范围为0.29-44.7(中值2.19)ng·L-1.六六六(HCHs)是主要污染物,其次为滴滴涕(DDTs),浓度分别为0.13-38.3(中值0.92)ng·L-1、0.03-3.28(中值0.63) ng·L-1.HCHs呈现出自上游至下游浓度逐渐升高的趋势,DDTs在上、下游无明显的空间分布规律.HCHs、DDTs的浓度均呈现夏季低、冬季高、春秋介于中间的季节性规律.
This study investigated the concentration distribution,patterns and sources of organochlorine pesticides (OCPs) residues in the water samples from Huangpu River;The seasonal and spatial variations of the OCPs concentrations were also analyzed.Except for methoxychlor,the other 20 OCPs were all detected in the water samples from Huangpu River.The concentrations ranged from 0.29 to 44.7 (median 2.54) ng· L-1.HCH was the predominant OCP,followed by DDTs,the concentrations of which were 0.13-38.3 (median 0.92) ng· L-1,and 0.03-3.28 (median 0.63) ng· L-1 respectively.HCH concentration increased from upstream to downstream.However,DDT had no obvious spatial variation.HCH and DDT concentrations in Huangpu River showed a seasonal pattern:low in summer,high in winter,and medium in spring and autumn.
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