摘要
建立了利用气相色谱法同时检测稻田水、土壤中醚菌酯和苯醚甲环唑残留量的分析方法.稻田水样品用乙酸乙酯直接萃取;稻田土壤样品用丙酮-水（2∶1,V/V）提取,乙酸乙酯萃取,所得样品溶液采用HP-5弹性石英毛细管柱经程序升温分离,电子捕获检测器检测,外标法定量.结果表明,当稻田水和土壤的加标水平在0.02～1.00 mg/kg时,平均回收率为90.39％～111.80％,相对标准偏差为2.47％～8.11％.该方法具有快速、简便、灵敏度高的特点,可用于稻田环境中醚菌酯和苯醚甲环唑残留量的分析.
A method was developed for the simultaneous determination of kresoxim-methyl and difenoconazole residues in paddy water and paddy soil with gas chromatography.The paddy water sample was extracted with acetic ether.The paddy soil sample was first extracted with acetone-water （1∶1,V/V）,and then with acetic ether.The separation was performed on HP-5 capillary column under programmed temperature.The quantification was performed by external standard method.The spiked level was ranged from 0.02 to 1.00mg/kg.The average recoveries were 90.39％～111.80％ with the relative standard deviations of 2.47％～8.11％ in paddy water and soil.The method is effective,sensitive and practical for the determination of kresoximmethyl and difenoconazole residue in paddy environment.
出处
《湖北农业科学》
北大核心
2014年第21期5249-5252,共4页
Hubei Agricultural Sciences
基金
农业部农药残留试验项目(2009F360)
关键词
气相色谱法
醚菌酯
苯醚甲环唑
稻田水
稻田土壤
gas chromatography
kresoxim-methyl
difenoconazole
paddy water
paddy soil
