汞以其极高的毒性、易迁移性、影响的持久性和高度的生物富集性,而成为目前全球最引人关注的环境污染物之一[1]。世界卫生组织将汞列为首要考虑的环境污染物。水体中的汞可通过食物链在鱼虾体中富集,富集量随时间的延长而增加,鱼虾能蓄积在水体中的汞达数十万倍以上至几十万倍[2]。因此, Mercury has become one of the most attractive environmental pollutants in the world with its extremely high toxicity, easiness to migrate, persistent impacts and high bioaccumulation [1]. WHO lists mercury as a primary environmental pollutant. Mercury in water can be enriched in fish and shrimp through the food chain, and the amount of enrichment increases with time. The amount of mercury that fish and shrimp can accumulate in water reaches hundreds of thousands of times to hundreds of thousands of times [2]. therefore,