气相色谱法同时测定稻田中稻瘟酰胺和咪鲜胺残留  

Simultaneous Determination of Fenoxanil and Prochloraz Residue in Paddy Field by GC

作　　者：谭红[1] 郭正元[1] 周验旭 戴亮[1] 

机构地区：[1]湖南农业大学农业环境保护研究所,湖南长沙410128

出　　处：《环境监测管理与技术》2015年第1期42-45,共4页The Administration and Technique of Environmental Monitoring

基　　金：农业部药检所农残课题基金资助项目(2012F289)

摘　　要：采用二氯甲烷萃取稻田水样品,土壤样品用丙酮-二氯甲烷(体积比为9∶1)混合溶液提取,二氯甲烷萃取,水稻植株样品用乙腈-二氯甲烷(体积比为9∶1)混合溶液直接萃取,用气相色谱法同时测定样品中稻瘟酰胺和咪鲜胺残留。该方法在0.012 2 mg/L^2.68 mg/L范围内线性良好,稻田土壤、田水、水稻植株中稻瘟酰胺的检出限分别为2.75μg/kg、1.83μg/L、3.80μg/kg,咪鲜胺的检出限分别为3.55μg/kg、2.66μg/L、5.62μg/kg。空白稻田土壤、稻田水和水稻植株样品3个浓度水平的加标回收率为80.3%~104%,RSD为3.0%~13.2%。Fenoxanil and prochloraz residue in paddy field (soil,water and rice plant)were determined simultaneously by gas chromatography.The residues in the paddy-field water,paddy-field soil,and rice plants were extracted with methylene chloride,acetone-methylene chloride(volume ratio is 9∶1 ),and acetonitrile-meth-ylene chloride(volume ratio is 9∶1 )respectively.The results showed that the linearity was favorable in a range between 0.012 2 mg /L ~2.68 mg /L,the detection limits of fenoxanil in paddy-field soil,paddy-field water and paddy rice were 2.75 μg /kg、1 .83 μg /L、3.80 μg /kg,and the detection limits of prochloraz were 3.55 μg /kg、2.66 μg /L、5.62 μg /kg.The spiked recovery test of three concentration levels were done in paddy-field soil, paddy-field water and paddy rice,the recovery rate ranged from 80.3% ~104%,RSD ranged from 3.0% ~13.2%.

关 键 词：稻瘟酰胺 咪鲜胺 气相色谱法 土壤 水质 水稻植株 

分 类 号：O657.71[理学—分析化学]