生态环境学报2011，Vol.20Issue(6)：1111-1116,6.
珠江三角洲两条主要河流沉积物中的典型内分泌干扰物污染状况
Contamination of typical endocrine-disrupting chemicals in the sediment of two main rivers from the Pearl River Delta
摘要
Abstract
To investigate the occurrence and distribution of typical endocrine-disrupting chemicals in sediment of rivers from the Pearl River Delta, bisphenol A (BPA) and estrogens including estrone (El), 17α-estradiol (E2), diethylstilbestrol (DES), 17α-ethynylestradiol (EE2) and estriol (E3) in the surface sediments of Guangzhou reach of the Zhujiang River and Dongguan reach of the Dongjiang River were measured based on the application of the gas chromatography-mass spectrometry following ultrasonic extraction and derivatization to determine their concentrations, analyze their distributions and speculate their inputs. BPA was detectable in all the samples, and the natural estrogens El and E2 were detected in 72 and 61% of the total samples, respectively. Their concentrations (dry weight) were in the ranges of 14.3-429.5 ng·g-1, ＜ 1.3~10.9 ng·g-1 and ＜0.9~2.6 ng·g-1, with the medians of 79.5 ng·g-1, 3.4 ng·g-1 and1.6 ng·g-1, respectively. The other estrogens were all undetectable. Generally the sedimental pollution of BPA at the Dongguan reach was heavier than that at the Guangzhou reach, but, on the contrary, the pollution levels of the natural estrogens at the Guangzhou reach were higher. On the whole, the distributions of the three chemicals were characterized by gradually decreased down the stream toward the estuary, which was probably relative to the abusive discharge of domestic and industrial wastewater and hydrodynamic conditions along the rivers. The positive correlations between BPA, El, E2 and TOC contents suggested that organic matter is one of the key factors controlling the distribution of endocrine-disrupting chemicals in sediments.关键词
内分泌干扰物/沉积物/珠江三角洲/河流/双酚A/雌激素Key words
endocrine-disrupting chemicals/sediment/Pearl River Delta/rivers/bisphenolA (BPA)/estrogens分类
资源环境引用本文复制引用
龚剑,冉勇,陈迪云,杨余..珠江三角洲两条主要河流沉积物中的典型内分泌干扰物污染状况[J].生态环境学报,2011,20(6):1111-1116,6.基金项目
国家自然科学基金项目(40972222 （）
40903040) （）
广东省高校优秀青年创新人才培育项目(LYM09107) （LYM09107）
