中文摘要：

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0．19 μg·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，4一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．

英文摘要：

Gas chromatography-mass spectrometry （GC-MS） was used to analyze the distribution characteristics of two endocrine disrupting chemicals （ EDCs ）, nonylphenol （ 4-NP ）, and octylphenol （4-t-OP）, together with the precusor, nonylphenol polyethoxylates （NPEOs）, in surface water of Xiaodian sewage irrigation area.The results showed that the concentration of the three pollutants ranged from 0.83 to 47.68 μg·L^-1（ mean 5.92μg·L^-1 ）, 0 to 2.05 μg·L^-1 （ mean 0.19μg·L^-1 ） and 1.21 to 22.21μg·L^-1 （ mean7.49μg·L^-1 ） , respectively. Along the Beizhang drainage and the East Main channel, the content of NPEOs increased, while the level of 4-NP increased alone the Taiyu drainage. This was attributed to the influence from anthropogenic activities. In addition,4-NP and NPEOs prevailed over two Drainages and both pollutants presented significant positive correlation, which suggests partial degradation of NPEOs in wastewater after irrigation in the area.