| 除草剂草甘膦在土壤中的吸附行为 |
| |
| 引用本文： | 杨宏伟,郭博书,嘎尔迪.除草剂草甘膦在土壤中的吸附行为[J].环境科学,2004,25(5):158-162. |
| |
| 作者姓名： | 杨宏伟 郭博书 嘎尔迪 |
| |
| 作者单位： | 内蒙古师范大学化学系,呼和浩特,010022;内蒙古师范大学化学系,呼和浩特,010022;内蒙古师范大学化学系,呼和浩特,010022 |
| |
| 基金项目： | 内蒙古高等学校自然科学基金资助项目(ZD99152);内蒙古自然科学基金资助项目(20001301) |
| |
| 摘 要： | 研究了除草剂草甘膦在3种土壤中的吸附行为, 观察了pH和离子强度等因素对吸附的影响. 结果表明:草甘膦在3种土壤中的吸附过程均符合一级动力学规律, 吸附等温线均为直线,吸附常数Kd 2.2207～3.5280mL/g; 随着离子强度的降低, 草甘膦在3种土壤中的吸附量明显增大; 随着pH(9～3)逐渐减小, 草甘膦在呼和浩特特市土壤和东胜土壤中的吸附量增大, 在杭锦2号土中的吸附量先增大, 在pH=7时达到最大值, pH=5时开始下降, 下降到4时的吸附量与pH=9时的相等.
|
| 关 键 词： | 除草剂 草甘膦 土壤 吸附 |
| 文章编号： | 0250-3301(2004)05-0158-05 |
| 收稿时间： | 2003/11/4 0:00:00 |
| 修稿时间： | 2/4/2004 12:00:00 AM |
Adsorption Behaviors of Herbicide Glyphoste on Soils |
| |
| YANG Hong wei,GUO Bo shu and GA Er di.Adsorption Behaviors of Herbicide Glyphoste on Soils[J].Chinese Journal of Environmental Science,2004,25(5):158-162. |
| |
| Authors: | YANG Hong wei GUO Bo shu and GA Er di |
| |
| Institution: | Department of Chemistry, Inner Mongolia Normal University Huhhot 010022. Yanghw@imnu.edu.cn |
| |
| Abstract: | The adsorption behaviors of herbicide glyphoste on three soils were studied. The influence of pH value and ion strength on adsorption was discussed. It was shown that the adsorption dynamic process of glyphoste on three soils all was first order reaction, and the adsorption isotherms all were linear, adsorption coefficients Kd ranged from 2.2207-3.5280 mL x g(-1). The adsorption percentage of glyphoste on three soils increased with the ionic strength decrease. The adsorption percentage of glyphoste on the Huhhot soil and Dongsheng soil increased with pH value gradually decrease (9-3), and the adsorption percentage of the Hangjing 2 soil early increased and late decreased with pH value gradually decrease (9-3). |
| |
| Keywords: | herbicide glyphosate soil adsorption |
| 本文献已被 CNKI 维普 万方数据 PubMed 等数据库收录！ |
| 点击此处可从《环境科学》浏览原始摘要信息 |
| 点击此处可从《环境科学》下载免费的PDF全文 |
|
