A solid phase extraction-HPLC method was estabolished to separate residual nonylphenol ethoxylates and their metabolites in environment, the detected limit was 0.004μg·l-1 . The con-centration of NPnEO in Jialingjing river and Yangtes river (Chongqing City section) was detected using this method. NPnEO (n > 3) were detected in all samples with an from 4 to 28 in April, the highest total NPnEO (n >3) concentration was 37.28μg·l-1 in site A, located in the up-stream of Yangtse river, and the lowest concentrat...
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