中文摘要：

采用固相微萃取、气-质联用方法，调查了珠江口地区鱼塘、河流及人海口表层水中双酚A（BPA）的污染特征，分析了BPA残留水平与环境因子的关系。结果显示：珠江口地区鱼塘、横门水道、人海口表层水中BPA均值分别为1．19、1．41和2．06μg·L^-1。相关分析表明水体中BPA残留量与pH值显著相关（P〈0．05）。根据EC／PNEC（环境中某一污染物的残留水平与该污染物生态风险阈值之比）指标判断，目前珠江口地区表层水中BPA残留水平不会产生生态风险。

英文摘要：

Content levels of bisphenol A （BPA） in the surface waters of the Pearl River Estuary, Hengmen river and fishponds were determined by means of solid phase microextraction （SPME） and gas chromatography-mass spectra （GC-MS）. Results show that the content of BPA in the three waters was 1.19, 1.41 and 2. 06μg·L^-1, respectively. A significant relationship was observed between the contents of BPA and pH. According to the EC/PNEC evaluation system, the residual extent of BPA in the Pearl River Estuary area might not bring about any significant ecological risk to the environment and human beings.