Endocrine-disrupting compounds in the Xiangjiang River of China: Spatio-temporal distribution, source apportionment, and risk assessment
点击次数：
影响因子：
4.88
发表刊物：
Ecotoxicology and Environmental Safety
关键字：
Endocrine disrupting chemicals, Surface water, Seasonal variation, Ecological risk
摘要：
Endocrine-disrupting compounds (EDCs) were seasonally investigated in the surface water of the Xiangjiang River (south China) in order to understand their spatio-temporal distribution, source apportionment, and ecological risks. The occurrence of 21 EDCs were determined with liquid chromatography-tandem mass spectrometry in the water samples collected along the river over four seasons, and the results were statistically analyzed. The concentrations of progestagens, androgens, estrogens ranged from not detected (ND) to 98.3 ng L−1; while the concentrations of alkylphenols ranged from 0.8 to 3.1 × 103 ng L−1; and that of caffeine ranged from 0.1 to 49.8 ng L−1. The detection frequencies of bisphenol A, 4-tert-octylphenol, 4-n-nonylphenol, estrone, and 17β-estradiol were 95–100% during the four sampling campaigns. The seasonal and spatial variation trend of EDCs in the Xiangjiang River was noticeable. The concentration of EDCs in Yueyang section (downstream) was the highest in winter, while the concentration in Yongzhou (upstream) section was the lowest in spring. The concentration of EDCs in the Xiangjiang River was significantly correlated with the levels of the total organic carbon, water temperature, and dissolved oxygen. Source analysis indicated that untreated sewage was the major source of EDCs. Furthermore, the potential risks of EDCs in the surface water to aquatic organisms were assessed with the risk quotient method (European Commission, 2003), and the results indicated the highest ecological risk of 17β-estradiol in the Xiangjiang River.
论文类型：
期刊论文
学科门类：
环境科学与工程
文献类型：
J
卷号：
167
页面范围：
476-484
是否译文：
否
收录刊物：
SCI
学位：博士学位
职称：副教授
学科：化学工程与技术
所在单位：化学化工学院