珠三角地区鱼塘水体中双酚A污染及其生态风险评价

Bisphenol A pollution in aquatic waters of Pearl River Delta and related ecological risk assessment

摘要: 对地处珠三角的中山市鱼塘表层水及底泥中双酚A(BPA)污染水平进行了测定分析, 结果表明: 鱼塘表层水样品中BPA检出率为100%, 底泥样品中BPA检出率为44.4%。鱼塘表层水中BPA残留量为0.96~4.51 μg·L^-1, 平均浓度为3.29 μg·L^-1; 底泥中BPA含量较低, 浓度范围为0.19~1.31 ng·g^-1(干重), 平均浓度为0.23 ng·g^-1(干重)。相关及回归分析表明, 除pH及COD外, BPA残留量与大部分环境因子关系不密切。参照EC/PNEC体系, BPA在中山鱼塘水体中的残留水平不会导致生态风险。

Abstract: Bisphenol A (BPA) in surface water and sediments of aquiculture pond in Zhongshan City was determined. BPA is detected in all surface water samples and 44.4% sediment samples. Residual content of BPA in surface water is in the range of 0.96 ~ 4.51 μg·L^-1, with an average of 3.29 μg·L^-1, that in sediments is in the range of 0.19~1.31 ng·g^-1(dry weight), with an average of 0.23 ng·g^-1(dry weight). No significant relationship exists between BPA content and that of main environmental factors, except for pH and COD. Based on EC/PNEC evaluation standard, BPA residuary extent of the aquatic environment in Zhongshan City could induce minimal ecological risk to people and the environment.