摘要
采样分析了吉林省东部松花江上游金矿开采区及其附近水、土壤、动植物及河流沉积物样品中汞的含量,发现河流沉积物中汞的污染相当严重;受其影响当地的植物和两栖类动物———中国林蛙体内总汞和甲基汞含量也明显高于对照组。实验表明,林蛙内脏对汞的富集能力大于肌肉;秋季对汞的富集大于春季;河流沉积物中甲基汞的含量与林蛙体内甲基汞的含量有较好的正相关。汞污染的来源与区域内个体金矿的滥采滥排有直接关系,表明人类活动所产生的有毒重金属在地表过程中出现了化学生态效应。
By analyzing the mercury contained in the waters, soil, propagations and sediments near the gold mine, on the upper Songhua River, which is along the east of Jilin Province, we have founded that the mercury pollution in river sediments was very serious. Being affected by it, the mercury concentration in the plants and the amphibian,Rana Chensinensis of the polluted samples was much higher than that of the unpolluted samples. The experiment results show that the accumulation of bowels is stronger than that of muscles, that the accumulation is stronger in autumn than that in spring, and that there is positive correlation between the methyl-mercury concentration in the river sediments and that in the Rana Chensinensis＇s body in the region. The mercury pollution is caused by the over-exploitation and random waste-discharging by the individually owned gold mines, and shows that the pollution and chemical ecology effect, of such poisonous heavy metal, manifested through the land-surface process, is caused by excessive human activities.
出处
《地理科学》
CSCD
北大核心
2005年第6期737-741,共5页
Scientia Geographica Sinica
基金
中国科学院"九.五"资源与生态环境重点项目(KZ952-S1-201)资助
关键词
河流沉积物
林蛙
汞污染
化学生态效应
river sediments
Rana Chensinensis
mercury pollution
chemical ecology effect
