重金属在水-土交互系统中迁移转化影响因素研究  

Research on Influencing Factors of Migration and Transformation of Heavy Metals in Water-soil Interaction System

作　　者：吕达[1,2] 毕岚 L Da;BI Lan(College of Electrical Engineering,Anhui Technical College of Industry and Economy,Hefei 230051,China;School of Earth and Space Sciences,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]安徽工业经济职业技术学院电气学院,合肥230051 [2]中国科学技术大学地球与空间学院,合肥230026

出　　处：《长春大学学报》2025年第2期26-34,共9页Journal of Changchun University

基　　金：省教育厅项目(gxbjZD2021123,2023AH052672,2022jyxm204)。

摘　　要：利用水-土交互实验装置动态模拟重金属在不同环境因素影响下的迁移转化特征,结果表明,pH值对4种重金属在土壤和水体中的迁移影响各不相同。在土壤中,As受pH值影响较大;Cd随着pH值增加,向下迁移浓度逐渐降低;Pb元素在强碱性土壤环境中较为稳定;Zn在土壤pH值为8左右时最为稳定。在水体中,As在高pH值和低pH值淋滤条件下更利于迁移;碱性条件下Cd较为稳定,不容易释放到环境中;Pb的迁移释放能力随pH值增加而逐渐降低;Zn元素在强碱环境下,迁移能力强。并且随着淋滤时间的增加,4种重金属浓度均呈现出增加的趋势。The migration and transformation characteristics of heavy metals under the influence of different environmental factors were dynamically simulated by using the water-soil interaction experimental device.The results show that pH value has different effects on the migration of four heavy metals in soil and water.In soil,As is greatly affected by pH value;as pH value increases,the downward migration concentration of Cd gradually decreases;Pb element is relatively stable in a strong alkaline soil environment;Zn is the most stable when the soil pH value is about 8.In water,As is more conducive to migration under high and low pH leaching conditions;Cd is relatively stable under alkaline condition and is not easily released into the environment;the migration and release ability of Pb gradually decreases with the increase of pH value;the migration ability of Zn element is strong under strong alkaline environment.With the increase of leaching time,the concentrations of four heavy metals all show an increasing trend.

关 键 词：水-土交互实验 重金属 PH值 淋滤时间 迁移 

分 类 号：X142[环境科学与工程—环境科学]