期刊
CHEMOSPHERE
卷 77, 期 1, 页码 1-7出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2009.06.036
关键词
Nonylphenol ethoxylates; Sewage treatment plants; Rivers; Tianjin
资金
- National Natural Science Foundation of China [20677031]
Nonylphenol polyethoxylates (NPnEO) and nonylphenol (NP) have provoked much environmental concern because of their weak estrogenic activities. We monitored NPnEO and their metabolites in rivers in Tianjin and in a sewage treatment plant of Tianjin monthly for 1 year. The total concentrations of NPnEO and NP in influent, up to 47.2 mu g L-1 in August, were higher in summer than in other seasons. During the 12 months survey, NP was accumulated in most effluent samples with a mean value of 2.92 mu g L-1. The average concentrations of nonylphenol monoethoxylate (NP1EO), nonylphenol diethoxylate (NP2EO) and nonylphenol triethoxylate (NP3EO) in effluents were 1.26,1.53 and 1.06 mu g L-1, which corresponds to percent removals of 75%, 60% and 62%, respectively. In rivers of Tianjin, NP2EO and nonylphenoxyethoxy acetic acid (NP2EC) exhibited the highest concentrations in the surface water, up to 1.38 and 9.59 mu g L-1, respectively. The pollution of nonylphenolic substances in sediments of Haihe River belongs to moderate or severe level in the world, with the total concentration between 4.1 and 9.9 mu g g(-1), dry weight. (C) 2009 Elsevier Ltd. All rights reserved.
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