Department of Environmental Studies, Rabindra Bharati University, 56A, B. T. Road, Kolkata 700050, India.
Bull Environ Contam Toxicol. 2010 May;84(5):618-22. doi: 10.1007/s00128-010-9972-5. Epub 2010 Apr 21.
Total mercury levels were quantified in Tilapia mossambicus, Cirrhinus mrigela and Labio rohita, captured from East Calcutta Wetlands and Titagarh sewage fed aquaculture ponds. The bioconcentration factor of collected fish was assessed. Total mercury level ranged from 0.073 to 0.94 microg/g in both pre and post monsoon season. T. mossambicus in both season and C. mrigela at pre monsoon, cross the Indian recommended maximum limit (0.50 microg/g wet weight) for food consumption and according to World Health Organization guidelines all fish were not recommended for pregnant women and individuals under 15 years ages. A significant correlation was observed between mercury content of aquaculture pond water and fish muscle tissue. Total mercury concentration in experimental sites were higher than the control area (Wilcoxon Ranked-Sum test p > 0.05), which suggested the connection between mercury bioaccumulation and sewage fed aquaculture.
在东加尔各答湿地和Titagarh 污水养殖池塘中捕获的罗非鱼、圆口铜鱼和鲤鱼，其总汞含量被定量分析。评估了收集鱼类的生物浓缩系数。在前和后季风季节，总汞含量范围为 0.073 至 0.94 微克/克。在前季风季节，T. mossambicus 和 C. mrigela 都超过了印度推荐的最大食用限量（0.50 微克/克湿重），根据世界卫生组织的指导方针，所有鱼类都不建议孕妇和 15 岁以下人群食用。水产养殖池塘水和鱼类肌肉组织中的汞含量之间存在显著相关性。实验点的总汞浓度高于对照区（Wilcoxon 秩和检验 p > 0.05），这表明汞生物累积与污水养殖之间存在联系。
