期刊论文

Zhou, H.

中文

环境工程学报

1673-9108

2017

11

5

3220-3226

10.12030/j.cjee.201607009

农业部财政部专项（湘农业联2015-112-2）； 国家自然科学基金资助项目（41501344）； 湖南省重点学科建设项目（2006180）；

本校为第一且通讯机构

通过3种洗脱方式(TE,EDTA-Na_2传统洗脱方式;UE-1,超声波先作用于土壤后再加入EDTA-Na_2洗脱;UE-2,超声波强化EDTA-Na_2洗脱)对湖南典型矿区周边重金属复合污染农田土壤进行洗脱处理,研究了3种洗脱方式对土壤中Pb和Cd的洗脱效果及洗脱前后土壤中Pb和Cd的形态分布。结果表明:3种洗脱方式均对土壤中Pb和Cd有较好的洗脱效果,其中UE-2对土壤中Pb和Cd洗脱率均大于TE和UE-1;在作用时间为5~480 min时,UE-2对郴州土壤中Pb和Cd的洗脱率分别为43.9%~55.9%和63.6%~74.4%,对衡阳土壤中Pb和Cd的洗脱率分别为63.1%~ 80.9%和74.7%~ 86.7%,相对于传统萃取方式(TE),UE-2洗脱方式使土壤中Pb和Cd的洗脱率提高了将近...

The purpose of this study was to study the removal rates of soil Pb and Cd and the changes in species of these two elements before and after extracting with three methods(TE, traditional extracting soil with EDTA-Na2 solution; UE-1, ultrasonic waves applied to soils first and then extracting soils with EDTA-Na2 solution; UE-2, ultrasonic waves and EDTA-Na2 solution applied together for soil extraction). The two tested soils were collected from two paddy soils polluted with heavy metals near the mining areas from Chenzhou and Hengyang, southern ...