嘧菌酯在辣椒和土壤中的残留检测方法及消解规律  

Residual Determination and Degradation Regularity of Azoxystrobin in Pepper and Soil

作　　者：郭紫兰[1] 陈武瑛[2] 张德咏[2] 陈武荣[2] 严清平[2] 柏连阳[1] 刘勇[2] GUO Zi-lan CHEN Wu-ying ZHANG De-yong CHEN Wu-rong YAN Qing-ping BAI Lian-yang LIU Yong(College of Plant Protection, Hunan Agricultural University, Changsha 410128, China Hunan Academy of Agricultural Sciences, Plant Protection Institute, Changsha 410125, China)

机构地区：[1]湖南农业大学植物保护学院,长沙410128 [2]湖南省农业科学院植物保护研究所,长沙410125

出　　处：《农药》2017年第4期273-275,282,共4页Agrochemicals

基　　金：国家自然科学基金资助项目(31401788)

摘　　要：[目的]建立嘧菌酯在辣椒和土壤中的残留检测方法,研究其在辣椒和土壤中的消解规律。[方法]辣椒和土壤样品经乙酸乙酯提取,PSA和GCB净化后经GC-滋ECD进行定量分析。[结果]在0.05~5 mg/kg添加水平下,辣椒和土壤中嘧菌酯的回收率为80.3%~104.0%,相对标准偏差为1.5%~6.3%。[结论]建立的检测方法准确可靠。嘧菌酯在辣椒和土壤中的半衰期分别为5.2~13.1、5.4~12.6 d。[Aims] The aims were to establish the residual determination method for azoxystrobin and study its degradation regularity in pepper and soil. [ Methods ] The pepper and soil samples were extracted with ethyl acetate, the residues were cleaned up by PSA and GCB, determined by gas chromatography with ECD detector. [ Results ] The recoveries of azoxystrobin in pepper and soil were 80.3-104.0% with the relative standard deviations of 1.5-6.3% at the spiked levels of 0.05-5 mg/kg. [ Conclusions ] The method was accurate and reliable. The half-lives of azoxystrobin were 5.2-13.1 d in pepper and 5.4-12.6 d in soil.

关 键 词：嘧菌酯 辣椒 土壤 消解规律 

分 类 号：S481.8[农业科学—农药学]