| 砷、矾与镉交互作用及其对土壤吸附镉的影响 |
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| 引用本文： | 赵磊,黄益宗,朱永官,李靖.砷、矾与镉交互作用及其对土壤吸附镉的影响[J].环境化学,2004,23(4):409-412. |
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| 作者姓名： | 赵磊 黄益宗 朱永官 李靖 |
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| 作者单位： | 中国科学院生态环境研究中心,北京,100085;西北农林科技大学,杨凌,712100;中国科学院生态环境研究中心,北京,100085;西北农林科技大学,杨凌,712100 |
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| 基金项目： | 中国科学院知识创新工程重大项目 (KZCX1 SW 1 9)，科技部 973计划 ( 2 0 0 2CB 41 0 80 8)资助项目 |
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| 摘 要： | 研究了砷、矾与镉交互作用及其对土壤吸附镉的影响 .结果表明 :江西红壤、海南砖红壤、湖南红壤和北京褐土等四种土壤吸附镉的等温线符合Freundlich方程 ,吸附常数K的大小顺序为 :北京褐土 >湖南红壤 >江西红壤 >海南砖红壤 .pH值是决定土壤吸附镉的关键因素之一 ,砷和矾的存在可促进土壤对镉的吸附
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| 关 键 词： | 镉 砷 矾 土壤 吸附 |
THE INTERACTIONS OF ARSENATE OR VANADIUM WITH CADMIUM AND THE EFFECTS OF ARSENATE AND VANADIUM ON THE ADSORPTION OF CADMIUM BY SOILS |
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| ZHAO Lei , HUANG Yi zong ZHU Yong guan LI Jing.THE INTERACTIONS OF ARSENATE OR VANADIUM WITH CADMIUM AND THE EFFECTS OF ARSENATE AND VANADIUM ON THE ADSORPTION OF CADMIUM BY SOILS[J].Environmental Chemistry,2004,23(4):409-412. |
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| Authors: | ZHAO Lei HUANG Yi zong ZHU Yong guan LI Jing |
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| Institution: | ZHAO Lei 1,2 HUANG Yi zong 1 ZHU Yong guan 1 LI Jing 2 |
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| Abstract: | A series of experiments were conducted to investigate the adsorption of cadmium by soils and the effects of arsenate and vanadium on the adsorption of cadmium.It is shown that the adsorption data of the four soils studied could be fitted satisfactorily using the Freundlich equation.The Freundlich parameter K ,the adsorption coefficient,which is related to the cadmium adsorption capa city ,in dicated that the adsorption capacity of the four soils as follows is:Beijing>Hunan>Jiangxi>Hainan.pH is the most important factor to control the soil adsorption capacity.The presence of arsenate or vanadium enhances the adsorption of Cadmium by soils.This is probable due to the fact that the adsorption of arsenate and vanadium by soils could increase the negative surface charge,or that arsenate and vanadium could form complex precipitation with cadmium. |
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| Keywords: | cadmium arsenate vanadium adsorption soil |
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