Gong Jian, Ran Yong, Chen Diyun, Yang Yu, Ma Xiaoxuan
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
Environ Monit Assess. 2009 Sep;156(1-4):199-210. doi: 10.1007/s10661-008-0474-4. Epub 2008 Aug 1.
The occurrence and environmental risk of endocrine-disrupting chemicals was investigated in the surface water samples of the Zhujiang and Dongjiang rivers, Pearl River Delta (PRD) of South China. Thirty surface water samples were collected in the dry season and analyzed by using an MSTFA derivation and a GC-MS-SIM method. Concentrations of biphenol A (BPA) ranged from 43.5 to 639.1 ng L( - 1), and concentrations of estrone (E1) and 17beta-estradiol (E2) ranged from <1.5 to 8.2 ng L( - 1) and from <1.1 to 1.7 ng L( - 1), respectively. The spatial distribution of these chemicals was related to the discharge of domestic and industrial wastewater along the rivers. The highly significant correlation among BPA, E1, and dissolved organic carbon (DOC) might be related to their same contamination source and/or their association with colloidal organic carbon of DOC in the river samples. Compared with other studied rivers in the world, the estrogenic contamination in the investigated rivers was high for BPA and moderate for E1. As the average estrogenic activity in E2 activity equivalent (E2eq; 1.16 ng E2eq L( - 1)) for the target BAP, E1, and E2 combined with those for nonyphenol and octylphenol, which were previously reported, exceeds documented effect levels in the investigated river waters for some aquatic species, they may pose a high risk to the local aquatic organisms.
对中国南方珠江三角洲珠江和东江的地表水样本中内分泌干扰化学物质的发生情况及环境风险进行了调查。在旱季采集了30个地表水样本，并采用MSTFA衍生化和GC-MS-SIM方法进行分析。双酚A（BPA）的浓度范围为43.5至639.1 ng L(-1)，雌酮（E1）和17β-雌二醇（E2）的浓度范围分别为<1.5至8.2 ng L(-1)和<1.1至1.7 ng L(-1)。这些化学物质的空间分布与河流沿线生活污水和工业废水的排放有关。BPA、E1与溶解有机碳（DOC）之间高度显著的相关性可能与其相同的污染源和/或它们与河流样本中DOC的胶体有机碳的结合有关。与世界上其他已研究的河流相比，所调查河流中BPA的雌激素污染程度较高，E1的污染程度为中等。由于目标BAP、E1和E2与先前报道的壬基酚和辛基酚的雌激素活性当量（E2eq；1.16 ng E2eq L(-1)）的平均雌激素活性超过了所调查河流水域中某些水生物种的记录效应水平，它们可能对当地水生生物构成高风险。
