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当前位置: 首页 > 文章 > 土壤有机质、pH值和表面活性剂对杀菌剂戊菌唑在土壤中吸附与解吸行为的影响 农药 2015 (12) 906-910
Position: Home > Articles > Effects of Soil Organic Matter,pH and Surfactant on the Sorption and Desorption of Penconazole in Soil Agrochemicals 2015 (12) 906-910

土壤有机质、pH值和表面活性剂对杀菌剂戊菌唑在土壤中吸附与解吸行为的影响

作  者：
姜蕾;贾林贤;林靖凌;刘迎;潘波
单  位：
中国热带农业科学院环境与植物保护研究所;中国热带农业科学院环境与植物保护研究所农业部儋州农业环境科学观测实验站中国热带农业科学院分析测试中心
关键词：
戊菌唑;吸附;解吸;土壤有机质;pH值;曲拉通-114
摘  要：
[目的]系统研究土壤有机质、土壤溶液pH值和表面活性剂对土壤中戊菌唑吸附与解吸的影响。[方法]通过标准批量平衡法试验,并采用Freundlich方程对吸附与解吸等温线进行拟合。[结果]有机质含量与戊菌唑在土壤上的吸附量呈正相关;土壤溶液pH值接近戊菌唑的p Ka(1.5)时,吸附量最大;Triton X-114浓度大于CMC时,显著抑制戊菌唑在土壤中的吸附,Triton X-114浓度小于CMC时,无显著影响。[结论]土壤有机质、土壤溶液pH值和表面活性剂对戊菌唑在土壤中吸附与解吸均有显著影响,且土壤有机质是主导因素。
译  名：
Effects of Soil Organic Matter,pH and Surfactant on the Sorption and Desorption of Penconazole in Soil
作  者：
JIANG Lei;JIA Lin-xian;LIN Jing-ling;LIU Ying;PAN Bo;YANG Yi;LIN Yong;Chinese Academy of Tropical Agricultural Sciences Environment and Plant Protection Institute;Danzhou Scientific Observing an Experimental Station of Agro-Environment Ministry Agriculture;Chinese Academy of Tropical Agricultural Sciences Analysis and Testing Center;
关键词：
penconazole;;sorption;;desorption;;SOM;;pH;;Triton X-114
摘  要：
[Aims] The aims were to study the effects of soil organic matter(SOM), pH and surfactant on the sorption and desorption of penconazole in yellow-brown soil and latosol. [Methods] Batch experiments were performed, and the sorption and desorption equilibrium data were correlated with the organic carbon content in the different types of soil and fitted to the Freundlich equation. [Results] The sorption capacity of soil to penconazole was significantly reduced with the decrease of SOM content, whereas, desorption of penconazole was drastically promoted; the maximum sorption of penconazole was detected when pH was approach its p Ka(1.5). When the concentration of TX-114 was above the CMC, the sorption in soil was remarkably inhibited, whereas, when the concentration of TX-114 was below the CMC, there was no significant effect on sorption and desorption. [Conclusions] The Results showed that SOM, pH and surfactant can significantly influenced the sorption and desorption of penconazole in soil, in addition,SOM controlled the sorption and desorption of penconazole in soil.

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