Adsorption and desorption of bensulfuron-methyl on Italian paddy field soils

被引：38

作者：

Cavanna, S ^{[1
]}

Garatti, E ^{[1
]}

Rastelli, E ^{[1
]}

Molinari, GP ^{[1
]}

机构：

[1] Univ Cattolica Sacro Cuore, Fac Agr, Sez Chim Suolo, Ist Chim Agr & Ambientale, I-29100 Piacenza, Italy

来源：

CHEMOSPHERE | 1998年 / 37卷 / 08期

关键词：

besulfuron-methyl; adsorption; desorption; soil;

D O I：

10.1016/S0045-6535(98)00149-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A study on bensulfuron-methyl adsorption and desorption processes has been carried out in three different Italian paddy field soils (silt-loam, sandy-loam and loamy-sandy). The kinetic study has shown that equilibrium was reached in the early stages (twenty minutes) of contact between soil and herbicide. The results of the experiments on adsorption fit Freundlich's equation. K-oc values have shown that bensulfuron-methyl adsorption mainly regards the clay mineral fraction. The desorption of the pesticide from sandy-loam and loamy-sand soil has resulted to be about 50% when soil washing is carried out with a water volume 7.5 times greater than soil mass, while the amount released from silt-loam soil is 21%. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1547 / 1555

页数：9