期刊论文

中文

湖北农业科学

0439-8114

2014

53

21

5249-5252

10.14088/j.cnki.issn0439-8114.2014.21.052

农业部农药残留试验项目（2009F360）；

本校为其他机构

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...