工业三废中汞、砷等有害金属的排放污染了河流和湖泊,被污染了的江河水又流向海洋,因而近年来国外有不少资料报导各个大洋,特别是近海海域污染的情况,海产品有较高的砷含量,已为许多调查资料所证实。汞的含量也正在逐年增高。广东省面临南海,有很长的海岸线,居民的副食品中,海产品有相当的比重。因而调查我省沿海某些常见海产品的汞、砷含量,对监测工业三废的污染以及了解居民由海产品摄入的汞、砷含量是很有必要的。 In recent years, many overseas sources have reported on the pollution in various oceans, especially in offshore areas. The seafood products have been contaminated by rivers, lakes and polluted rivers and lakes. Higher arsenic levels have been confirmed by many surveys. Mercury content is also increasing year by year. Guangdong faces the South China Sea, has a long coastline, residents of the non-staple food, seafood has a considerable proportion. Therefore, it is necessary to investigate the mercury and arsenic contents of some common seafood along the coast of our province. It is necessary to monitor the pollution of industrial wastes and understand the mercury and arsenic ingested by residents.