摘要
松花江受汞污染严重,沿江居民由于食鱼而受到甲基汞危害,但在上游主要污染源停止排放含汞废水10年以后,水环境汞污染有明显改善,肇源江段鱼汞均值下降近50％,沿江居民年均食鱼量由250kg降至92kg,体内汞蓄积大为减少。经临床检查结果表明全江仅在上游肇源和双城江段有106人诊断为甲基汞吸收,15人为观察对象,未发现慢性甲基汞中毒的新患者。
The water in Songhua River has been seriously polluted by the mercury. The resdents along the river suffered from the methly-mercury by eating the fish. After ten years, the main factories on the upper stream had stoped discharging the waste water. The pollution has been obviously alleviated. The average mercury level in fish of Zhao Yuan section has reduced about 50%. The amount of eaten fish of residents per year has decreased from 250 kg to 92 kg. The results of clinical exami- nation showed that along whole the river only 106 people who lived in upper stream,Zhao Yuan and Shuang Cheng county, were diagnosed as methly-mercury absorption and 15 persons were determined as observed objects. No new methly-mercury poison case was found.
