文献类型： 外文期刊
作者： Chen, Liezhong 1 ; Li, Yanli 1 ; Wang, Ting 1 ; Yu, Yunlong 2 ;
作者机构： 1.Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Inst Agroprod Safety & Nutr, Hangzhou 310021, Peoples R China
2.Zhejiang Univ, Coll Agr & Biotechnol, Hangzhou 310029, Peoples R China
期刊名称：ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY （ 影响因子：2.804； 五年影响因子：3.399 ）
ISSN： 0090-4341
年卷期： 2021 年 81 卷 2 期
页码：
收录情况： SCI
摘要： The sorption, desorption, and mobility of microencapsulated chlorpyrifos (CPF-MC) in two typical soils, namely, silt loam and sandy, were investigated in this study. Sorption/desorption experiments were carried out by using the batch equilibration method. Results showed that the sorption isotherms of CPF-MC and emulsifiable concentrate of chlorpyrifos (CPF-EC) in silt loamy soil were similar. However, a considerable difference was observed in the sorption isotherms of two chlorpyrifos (CPF) formulations in sandy soil. The amounts of CPF desorbed from two soils in four desorption steps decreased sequentially in CPF-EC treatments, while the desorbed amounts remained stable in CPF-MC treatments. Hence, the sorption/desorption processes of CPF-EC were mainly controlled by soil affinity to CPF. However, these processes of CPF-MC were affected by the release rate of CPF from capsules. The mobility of two CPF formulations in soil was estimated in vertical columns packed with soils. Results showed that there was leaching of CPF-EC in silt loam column, whereas CPF-MC was not vertically mobile in silt loam column under the same leaching conditions. However, in column with sandy soil, the percentage of CPF-MC leaching from the column was 86.54%, which was higher than the 73.75% that leached from the column in the treatment with CPF-EC.
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