中文摘要：

采用3种不同酸碱度的模拟雨水对生活垃圾进行浸泡实验，使用ORP测定仪和电感耦合等离子体质谱法（ICP-MS）测定了3种不同浸泡介质浸泡下的6个不同时段的浸出液的pH值和重金属浓度，通过分析、计算，研究了生活垃圾重金属的迁移特征。结果表明，重金属元素的动态浸出整体随pH值下降而升高，但相关性不明显，浸出浓度与时间整体上呈负相关关系；浸出总量效果较好的元素为Fe、Mn、Zn、As，较差的为Pb、Sn、H鼽Cd，其他元素中等；阶段浸出率较高的元素有Ni、Co、Cr、Mn、Cd、Cu，较低的元素有Fe，Sn、zn介于中间水平；累积浸出率和累积浸出强度较高的元素有Cr、Mn、Co、Ni、Zn，较低的元素为Fe，Cu、Cd、Sn居于中间水平。利用非线性函数拟合生活垃圾中重金属随时间浸出的浓度，函数拟合相关系数在0．9以上，可对重金属的浸出浓度和浸出总量进行预测。

英文摘要：

Comparative soaking experiments on different acid-base conditions were carried out using simulated rain with different pH values and different immersion time. The soakage solution pH values and the contents of heavy metals were measured by ORP Analyzer and inductively coupled plasma mass spectrometry （ICP-MS）. The leaching characteristics of heavy metals in municipal solid waste （MSW） were studied by analysis and calculation. The results show that dynamic leaching of heavy metals increases with decreasing pH values on the whole, but the relativity is not significant. The leaching concentration is negatively correlated with time. The calculation results show that the elements with the largest cumulative leaching amount are Fe, Mn, Zn and As, and those with the smallest amount are Pb, Sn, Hg and Cd. The elements with the highest stage lixiviating rate are Ni, Co, Cr, Mn, Cd and Cu, and that with the lowest rate is Fe. The elements with the highest values of cumulative lixiviating rate and cumulative lixiviating intensity are Cr, Mn, Co, Ni and Zn, and that with the lowest ones is Fe. The good effect is obtained using nonlinear function to fit the leaching concentration of heavy metals. The correlative coefficients of the fitting function are better than 0.9, which can be used to predict the leaching concentration and the cumulative leaching amount.