| 乙草胺和异丙甲草胺在土壤中吸附的研究 |
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| 引用本文： | 王琪全,刘维屏.乙草胺和异丙甲草胺在土壤中吸附的研究[J].土壤学报,2000,37(1):95-101. |
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| 作者姓名： | 王琪全 刘维屏 |
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| 作者单位： | 浙江大学环境与资源化学研究所,杭州,310027 |
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| 基金项目： | 国家自然科学基金资助项目(39670420) |
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| 摘 要： | 本文研究比较了乙草胺和异丙甲草胺在６种土壤中的吸附，采用Ｆｒｅｕｎｄｌｉｃｈ方程对其吸附等温线进行描述，对Ｆｒｅｕｎｄｌｉｃｈ方程吸附常数Ｋａｔ和Γ／ｎ的乘积与土壤理化性质的相关性进行了分析，并探讨乙草胺和异丙甲草胺在腐殖酸上的吸附机理。结果表明，乙草胺和异丙甲草胺在土壤中吸附主要受土壤有机质支配，有机质含含量越高越有利于这两种除草剂在土壤上的吸附。异丙甲草胺在土壤中的吸附明显弱于乙草胺。氢键是乙
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| 关 键 词： | 乙草胺 异丙甲草胺 土壤 腐殖酸 吸附 污染 |
| 收稿时间： | 1998/10/10 0:00:00 |
| 修稿时间： | 1999/3/15 0:00:00 |
ADSORPTION OF ACETOCHLOR AND METOLACHLOR ON SOIL |
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| Wang Qi-quan and Liu Wei-Ping.ADSORPTION OF ACETOCHLOR AND METOLACHLOR ON SOIL[J].Acta Pedologica Sinica,2000,37(1):95-101. |
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| Authors: | Wang Qi-quan and Liu Wei-Ping |
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| Institution: | Wang Qi-quan
,Liu Wei-ping
;(Institute of Environmental and Resource Chemistry,Zhejiang University,Hangzhou 310027) |
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| Abstract: | The adsorption of acetochlor and metolachlor on 6 kinds of soils was measured using batch equilibration technique. It was found that adsorption isotherms couldfit Freundlich equation well. According to the analysis of the correlation between Kaf(1 /n) and the physical and chemical properties of the soils, organic matter content of soils was the dependent factor in the adsorption.Theresults showed that the adsorption of metolachlor on soils was weaker than that of acetochlor. Hydrogen bonding was found to be the common mechansm in the adsorption of acetochlor and metolachlor.Charge-transfer was the additive mechanism of acetochlor. |
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| Keywords: | Acetochlor Metolachlor Soil Humic acid Adsorption |
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