• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Biogeochemistry of Trace Elements: Environmental Protection, Remediation and Human Health international Symposium >Effects of organic acids on the surface charge characteristics and cadmium secondary adsorption on two soils
【24h】

Effects of organic acids on the surface charge characteristics and cadmium secondary adsorption on two soils

机译：有机酸对两种土壤表面电荷特征和镉二次吸附的影响

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cadmium (Cd) is one of the highly toxic elements in the soil environment. Soil surface charge characteristics may affect the adsorption of Cd and the equilibrium of Cd forms. The effects of organic acids on the surface charge characteristics and secondary adsorption of Cd by a yellow cinnamon soil and a latosol were studied. The results indicated that the quantity of negative charge of latosol was increased by the absorption of organic acids, whereas that of positive charge showed an opposite trend. The quantity of negative charge of yellow cinnamon soil was decreased by the absorption of organic acids, whereas that of positive charge changed little. The adsorption of citrate and oxalate increased the secondary adsorption capacity of Cd in both soils, and significantly increased the affinity of Cd to soils. The effect of oxalate on the adsorption of Cd was stronger than that of citrate on yellow cinnamon soil, however the situation was on the contrary for latosol.
机译：镉（Cd）是土壤环境中的一种剧毒元素。土壤表面电荷特征可能影响Cd的吸附和Cd形态的平衡。研究了有机酸对黄色肉桂土和Latosol对Cd的表面电荷特性和二次吸附的影响。结果表明，Latosol的负电荷量通过吸收有机酸而增加，而正电荷的量则呈现相反的趋势。黄肉桂土壤中负电荷的数量由于有机酸的吸收而减少，而正电荷的数量变化不大。柠檬酸盐和草酸盐的吸附增加了镉在两种土壤中的二次吸附能力，并显着提高了镉对土壤的亲和力。草酸在黄色肉桂土壤上对Cd的吸附作用强于柠檬酸，但与Latosol相反。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号