本文统计了1991~2011年已发布的中国沿海省份82个采样点的海产品重金属汞含量数据，剖析了中国海产品重金属含量的分布结构及其变动趋势。结果表明，我国沿海省份海产品平均汞含量排序：江苏>浙江>福建>广东>辽宁。在四类海产品中汞含量：软体类>鱼类>贝类>虾蟹。我国贝类、鱼类、虾蟹在2005年之前汞含量维持较低水平，从2005年后汞含量逐渐升高，在2010年左右达到最高值，然后汞含量开始下降。安全性评价表明我国各省份海产品平均汞含量均达到合格标准，一类清洁海域占调查海域总数量的84.62%。

The data of mercury contents of marine products included 82 samplings of coastal provinces, published from 1991 to 2011. The spatial distribution and change trend of the mercury contents were analyzed. The sequencing of the provinces where the marine produced according to the average mercury content is Jiangsu>Zhejiang>Fujian>Guangdong>Liaoning. In four kinds of marine products, the sequence of mercury contents was Molluscs >Fish>Shellfish>Shrimp and Crab. In China, the mercury content in Shellfish maintained a low level before 2005, but increased gradually after 2005, reached the highest value in 2010, and then declined. The mercury content in fish, Shrimp and Crab increased after 2005, reached the highest value in 2009, and then declined. The average mercury content in marine products of every province in our country was qualified. The sea area of the highest of biological quality standards was 84.6%.

秦皇岛市科技局科技支撑项目（201101A201；201001A173；2012023A029）