液相色谱串联质谱法测定玉米及其制品中的烟嘧磺隆残留  

Determination of residual nicosulfuron in corn and its products by LC-MS/MS method

作　　者：马书民[1] 宋翱[1] 李墨浠[1] 杨帆[1] 刘佳[2] 徐立明[1] 芦春梅[1] 

机构地区：[1]吉林出入境检验检疫局,吉林长春130062 [2]长春职业技术学院,吉林长春130033

出　　处：《粮食与饲料工业》2014年第11期61-63,共3页Cereal & Feed Industry

基　　金：吉林省科研课题(201110050)

摘　　要：采用凝胶净化技术和液相色谱串联质谱联用相结合技术,建立了玉米及其制品中烟嘧磺隆的残留量检测方法。试验采用乙腈提取样品,提取液经凝胶色谱仪净化,用液相色谱串联质谱仪测定,外标法定量,并采用选择离子监测进行阳性确证。结果表明,该方法的定量限达0.010mg/kg,线性范围为0.01-1.00mg/kg,方法回收率为84.0%-101.6%。该方法检测结果准确可靠,线性范围宽,适用范围广,能够满足高质量检测的要求。In this paper,Gel Permeation Technology and Liquid Chromatography-tandem Mass Spectrometry（LC-MS/MS）were used to determine the residue level of nicosulfuron in corn and its products.Samples were extracted with acetonitrile method.Extracts were purified by Gel Permeation Chromatography,tested by LC-MS/MS,and quantified by external standard method.Positive confirmation was performed by selected ion.Results showed that,in this way,the quantitation limit reached to0.010mg/kg and linear ranges were 0.01-1mg/kg.The method was accurate with recovery of 84-101.6%.Results of this method are proven to be reliable with a wide linear range.And the method carried out in the study is able to meet the requirement of high quality testing and can be widely used.

关 键 词：玉米 烟嘧磺隆 液液萃取 凝胶色谱净化 液相色谱串联质谱法 

分 类 号：S481.8[农业科学—农药学]