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环境化学  2015 

DOI:10.7524/j.issn.0254-6108.2014.07.011

Keywords: 污灌,地表水,壬基酚,辛基酚,壬基酚前体,分布

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Abstract:

用气相色谱质谱联用方法对太原市小店污灌区地表水中2种内分泌干扰物壬基酚(4-NP)、辛基酚(4-t-OP)以及4-NP前体壬基酚聚氧乙烯醚(NPEOs)的含量进行检测,结果表明地表水中3种污染物残留水平分别为0.83-47.68μg·L-1(均值为5.92μg·L-1)、ND-2.05μg·L-1(均值0.19μg·L-1)和1.21-22.21μg·L-1(均值为7.49μg·L-1).沿着东干渠和北张退水渠水流方向,NPEOs逐渐升高,沿着太榆退水渠水流方向,4-NP逐渐升高,表明地表水中污染物浓度的分布受人类活动的影响较大.在退水渠,4-NP和NPEOs浓度相对较高,且二者呈现显著正相关(r=0.967,P=0.00<0.01),证实了污水灌溉后一部分NPEOs发生了降解.该区域内水体中2种内分泌干扰物生态风险相对较强.

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