期刊论文

Effects of exogenous Cl~-on Cd~(2+) concentrations in soil solutions of different soil types

Peng, P.

中文

环境科学学报

0253-2468

2019

39

2

553-559

10.13671/j.hjkxxb.2018.0355

国家科技支撑计划项目（No.2015BAD05B02）； 农业部财政部重大专项（农办财函[2016]6号）； 湖南省重点学科建设项目（No.2006180）；

本校为第一且通讯机构

土壤镉( Cd)的环境行为与其在土壤溶液中的存在形态以及陪伴离子有关,然而外源Cl~-与土壤溶液中Cd~(2+)的关系以及不同母质土壤对 Cd~(2+)的环境行为的影响并没有明确的结论.选取2种水稻土(第四纪红色黏土母质发育的红黄泥、紫色砂页岩母质发育的紫泥田)为研究对象,添加离子态外源Cd~(2+)( 0、1、2.5、5 mg·kg~(-1) ) ,平衡老化后添加外源Cl~-( 0、0.6、1.2 mg·kg~(-1) ) ,在保持水分恒定的情况下进行模拟培养试验,研究外源Cl~-添加对土壤溶液Cd~(2+)浓度的影响.结果表明,随着外源Cd~(2+)的增加,土壤溶液Cd~(2+)的浓度提高,红黄泥土壤溶液Cd~(2+)的浓度显著高于紫泥田;添加Cl~-会使土壤溶液中...

Environmental behaviors of cadmium (Cd) in soil are related to its chemical forms and the co-existed ions in soil solutions. However, there are no clear conclusions for the relationship between exogenous Cl- and soil solution Cd2+ and for the effects of soils with various parent materials on the environmental behaviors of Cd2+. In this research, two kinds of paddy soils (reddish clayey soil developed from quaternary red clay parent materials and purple paddy soil developed from purple sandy shale parent materials) were selected as the research ...