Adsorption of Metsulfuron and Bensulfuron on a Cationic Surfactant-Modified Paddy Soil

LIAO Min; XIE Xiao-Mei

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Adsorption of Metsulfuron and Bensulfuron on a Cationic Surfactant-Modified Paddy Soil

机译：阳离子表面活性剂改性稻田土壤对甲磺隆和苯磺隆的吸附

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摘要

Adsorption isotherms of metsulfuron and bensulfuron on a hexadecyltrimethylammonium (HDTMA) bromide-modified paddy soil under different ionic strengths, with divalent cation Cu2+, or having different pH were studied to describe their adsorptive behavior, and to try to explain the adsorption process of a sulfonylurea compound with a carbamoylsulfamoyl group in the modified soil environment. All the adsorption isotherms fitted the Freundlich equation well, and the HDTMA treatment of paddy soil dramatically enhanced adsorption capacity of metsulfuron or bensulfuron. Also, an increase of ionic strength and the addition of divalent heavy metal cation Cu2+ on the HDTMA-modified paddy soil increased the adsorption of metsulfuron or bensulfuron. Additionally, for metsulfuron and bensulfuron in the aqueous phase, adsorption capacity of the HDTMA-modified paddy soil gradually increased with decreasing pH.

机译：研究了在不同离子强度，二价阳离子Cu2 +或具有不同pH值的十六烷基三甲基铵（HDTMA）改性的水稻土上甲磺隆和苄嘧磺隆的吸附等温线，以描述它们的吸附行为，并试图解释磺酰脲的吸附过程。在改良的土壤环境中具有氨基甲酰基氨磺酰基的化合物。所有的吸附等温线都很好地拟合了Freundlich方程，并且HDTMA处理对水稻土的吸附大大提高了甲磺隆或苄嘧磺隆的吸附能力。而且，在HDTMA改性的水稻土上增加离子强度和添加二价重金属阳离子Cu2 +可以增加甲磺隆或苄嘧磺隆的吸附。另外，对于水相中的甲磺隆和苄嘧磺隆，HDTMA改性稻田土壤的吸附能力随着pH值的降低而逐渐增加。

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来源
《土壤圈（英文版）》 |2007年第1期|101-108|共8页
作者
LIAO Min; XIE Xiao-Mei;
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作者单位

College of Environmental and Resource Sciences, Department of Resources Science, Zhejiang University, Hangzhou 310029 (China);

College of Environmental and Resource Sciences, Department of Resources Science, Zhejiang University, Hangzhou 310029 (China);

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
adsorption; bensulfuron; cationic surfactant; metsulfuron; paddy soil;

机译：吸附;苯磺隆;阳离子表面活性剂;甲磺隆;水稻土;

Adsorption of Metsulfuron and Bensulfuron on a Cationic Surfactant-Modified Paddy Soil

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