| 敌敌畏在土壤中吸附特性的研究 |
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| 引用本文： | 杨宏伟,贾长宽,乌 地,郭博书.敌敌畏在土壤中吸附特性的研究[J].环境科学研究,2006,19(2):35-38. |
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| 作者姓名： | 杨宏伟 贾长宽 乌 地 郭博书 |
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| 作者单位： | 内蒙古师范大学,化学与环境科学学院,内蒙古,呼和浩特,010022 |
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| 基金项目： | 中国科学院资助项目
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内蒙古高校自然科学基金 |
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| 摘 要： | 研究了敌敌畏在2种土壤(东胜土壤和杭锦2#土)中的吸附特性,观察了土壤的性质如w(有机质),w(粘粒),CEC,pH和离子强度等因素对吸附的影响.结果表明:敌敌畏在2种土壤中的吸附过程符合一级动力学规律,可用线性等温式描述,分配常数Kd分别为0.119 0和0.369 3 mL/g;敌敌畏在杭锦2#土中的吸附量比较大,在东胜土壤中的吸附速率比较快.土壤性质与分配常数的相关分析发现:支配敌敌畏在土壤中吸附的主要因素是pH和离子强度,随着pH的增加和离子强度的降低,敌敌畏在2种土壤中的吸附量增大.
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| 关 键 词： | 敌敌畏 吸附 土壤 |
| 文章编号： | 1001-6929（2006）02-0035-04 |
| 收稿时间： | 2005-04-16 |
| 修稿时间： | 2005-04-16 |
A Research on the Adsorption Characteristic of Dichlorphos on the Soils |
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| YANG Hong-wei,JIA Chang-kuan,WU Di and GUO Bo-shu.A Research on the Adsorption Characteristic of Dichlorphos on the Soils[J].Research of Environmental Sciences,2006,19(2):35-38. |
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| Authors: | YANG Hong-wei JIA Chang-kuan WU Di and GUO Bo-shu |
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| Institution: | Chemistry & Environment Science College,Inner Mongolia Normal University,Huhhot 010022,China |
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| Abstract: | The adsorption characteristic of dichlorphos on the soils(Dong Sheng soil and Hang Jin 2~# soil) was studied.The influence properties of soils,such as organic matters,granule of viscosity,CEC,pH and ionic strength on adsorption were observed.It was shown that the adsorption dynamic process of dichlorphos on both soils was first order reaction and the adsorption isotherms were linear on both soils,with adsorption constant K_d being(0.119 0) and(0.369 3 mL/g,) respectively;the adsorption quantity was greater on the Hang Jin 2~# soil and the adsorption rate was quicker on the Dong Sheng soil;investigation of K_d versus properties of the soils discovered that pH and ionic strength were the factors dominating adsorption of dichlorphos on the soils,and the adsorption increased with the increase in pH but the decrease in ionic strength. |
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| Keywords: | dichlorphos adsorption soil |
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