Adsorption and Desorption Behaviors of Spirotetramat in Various Soils and Its Interaction Mechanism

被引：31

作者：

Chen, Xiaojun ^{[1
]}

Meng, Zhiyuan ^{[1
,2
]}

Song, Yueyi ^{[1
]}

Zhang, Qingxia ^{[1
]}

Ren, Li ^{[1
]}

Guan, Lingjun ^{[1
]}

Ren, Yajun ^{[1
]}

Fan, Tianle ^{[1
]}

Shen, Dianjing ^{[1
]}

Yang, Yizhong ^{[1
]}

机构：

[1] Yangzhou Univ, Sch Hort & Plant Protect, Joint Int Res Lab Agr & Agriprod Safety, Yangzhou 225009, Jiangsu, Peoples R China

[2] China Agr Univ, Dept Appl Chem, Beijing Adv Innovat Ctr Food Nutr & Human Hlth, Beijing 100193, Peoples R China

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2018年 / 66卷 / 47期

关键词：

spirotetramat; adsorption; desorption; soils; interaction mechanism; BASE-LINE SUSCEPTIBILITY; SORPTION-DESORPTION; 4; METABOLITES; CROSS-RESISTANCE; DISSIPATION; INSECTICIDE; VEGETABLES;

D O I：

10.1021/acs.jafc.8b03424

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

Spirotetramat is a pesticide with bidirectional systemicity and can effectively control pests by inhibiting the biosynthesis of fatty acids. In this study, adsorption and desorption behaviors of spirotetramat in six soils and its interaction mechanism were studied using the batch equilibrium method and infrared radiation. The results showed that the adsorption and desorption behaviors of spirotetramat conformed to the Freundlich isotherm model. The values of adsorption capacities KF-ads ranged from 2.11 to 12.40, and the values of desorption capacities KF-des varied from 2.97 to 32.90. From the hysteresis coefficient, spirotetramat was easily desorbed from the test soils. The adsorption capacity of the soil to spirotetramat enhanced with an increasing temperature. Moreover, the changes in pH values and exogenous addition of humic acid and surfactant could also affect soil adsorption capacity, but for desorption, there was no correlation.

引用

页码：12471 / 12478

页数：8

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