松花江甲基汞污染危害的环境流行病学研究

ENVIRONMENTAL EPIDEMIOLOGICAL STUDY ON THE CHRONIC METHYLMERCURY POISONING ALONG THE SONGHUA RIVER

调查了从第二松花江饮马河口至第一松花江同江全长１２７１ｋｍ沿江重点人群受甲基汞污染危害的情况。查出慢性中毒２人，观察对象１８人，甲基汞吸收１２０人。受害者症状轻微，基本稳定，无明显自觉症状。发汞和甲基汞较汞污染治理前有显著下降，说明治理取得了显著的健康效益。但少数人体内仍有过量的汞和甲基汞蓄积，为防止敏感者受害，每周食松花江鱼量不应超过２ｋｇ。文中还对诊断、受害者的年龄、性别和发病江段作了讨论。

From the Yinma River mouth of the Second Songhua River to Tungkiang of First Songhua River,the health conditions of fish eater have been examined. 2 cases of chronic methylmercury poisoning,18 cases of observant object and 120 cases of methylmercury absorption were discovered. The symptom was slight and aften unaware. Now, the mercury and methylmercury concentra tion in hair is decreased, compared with the controled pollution before, which shows controling mercury contamination in the Songhua River has made a great advance. But, a few heavy fish eater whose hair contained higher concentration of mercury and methylmercury were found to be distributed along the Songhua River. Thus, the amount of fish eated must be less than 2 kg in a week.