论文部分内容阅读
云南金顶铅锌矿是镉(Cd)元素富集区,采矿活动导致Cd释放出来进入地表环境造成Cd污染。矿区水体中出现较高含量的Cd,高出天然河流中Cd含量的50～100倍。矿区架崖山、北厂和跑马坪等采矿区水体中Cd浓度范围在15～30μg/L之间。矿区水体中Cd含量水平表现为:矿山浅层地下水>矿山溪流水>江河水。研究结果表明,矿区江下游河段水体明显受Cd污染,其中水体中Cd的平均含量为15.7μg/L,悬浮物中Cd含量为49.3mg/kg,沉积物中Cd含量为203.7mg/kg。矿区载Cd岩石和矿物的自然风化是造成矿区水环境中Cd污染的直接原因。
Yunnan Jinding lead-zinc mine is a cadmium (Cd) element-rich area, mining activities led to the release of Cd into the surface environment caused by Cd pollution. In the mining area, a higher content of Cd appears, which is 50-100 times higher than that of the natural river. The cadmium concentrations in the mining area of Jiayashan, Beichang and Xuemaping in the mining area range from 15 to 30 μg / L. The content of Cd in mining water body shows as follows: mine shallow groundwater> mine stream water> river water. The results showed that the water bodies in the river downstream of the mining area were obviously contaminated by Cd, the average content of Cd in water was 15.7μg / L, the content of Cd in suspended solids was 49.3mg / kg and the content of Cd in sediments was 203.7mg / kg. The natural weathering of Cd-bearing rocks and minerals in the mining area is the direct cause of Cd pollution in the water environment of the mining area.