Adsorption Characteristics and Influencing Factors of Chlorimuron-Ethyl in Two Typical Chinese Soils

被引：7

作者：

Ren, Wenjie ^{[1
,2
]}

Wang, Meie ^{[3
]}

Zhou, Qixing ^{[1
,4
]}

机构：

[1] Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China

[4] Nankai Univ, Coll Environm Sci & Engn, Minist Educ, Key Lab Pollut Proc & Environm Criteria, Tianjin 300071, Peoples R China

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 2011年 / 75卷 / 04期

基金：

中国国家自然科学基金;

关键词：

SULFONYLUREA HERBICIDES; METSULFURON-METHYL; SORPTION/DESORPTION BEHAVIOR; ETHAMETSULFURON-METHYL; THIFENSULFURON-METHYL; BENSULFURON-METHYL; ORGANIC AMENDMENT; SORPTION; DESORPTION; MECHANISMS;

D O I：

10.2136/sssaj2010.0228

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The adsorption of chlorimuron-ethyl in two typical northeastern Chinese soils before and aft er removal of organic matter and removal of organic matter plus iron/aluminum oxides was investigated using batch equilibrium methods, and the effect of pH on the adsorption was also evaluated. The adsorption kinetics were fitted well with the Elovich and pseudo-second-order kinetic models (R-2 = 0.973-0.985) and the adsorption isotherms conformed to the Linear, Freundlich, and Langmuir models (R-2 > 0.963). The mineral fraction appeared to dominate adsorption of chlorimuron-ethyl in brown earth (BE; Alfisols), while organic matter was the major component for the adsorption in black soil (BS; Mollisols). The adsorption of chlorimuron-ethyl in the original and treated soils all decreased with increasing pH. Moreover, the effect of pH on the adsorption of chlorimuron-ethyl in soil minerals was stronger than that in organic matter at acidic conditions.

引用

页码：1394 / 1401

页数：8

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