The levels of Pb, Zn, Cu and Cd in the sediment of Hengshi river with mine drainage afflux are found as high as 1841.02, 2326.28, 1522.61 and 10.33 mg/kg respectively, which are beyond their contents in the control samples.

• 结果发现；矿山废水流入的横石河沉积物中Pb、Zn、Cu和Cd的质量分数分别为1841.；02、2326