Nonylphenol ethoxylates and their metabolites in sewage treatment plants and rivers of Tianjin, China

作者：Yu Yong; Zhai Hongyan; Hou Shaogang; Sun Hongwen^*

来源：Chemosphere, 2009, 77(1): 1-7.

DOI：10.1016/j.chemosphere.2009.06.036

• Nonylphenol ethoxylates
• Sewage treatment plants
• Rivers
• Tianjin

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.

• 出版日期2009-9
• 单位南开大学; 安阳工学院