气相色谱-质谱法测定婴幼儿奶粉中16种多环芳烃  

Determination of 16 Kinds of Polycyclic Aromatic Hydrocarbons in Infant Formula by Gas Chromatography/Mass Spectrometry

作　　者：娄婷婷[1] 王利强[1] 王永芳[1] 葛宝坤[1] 许泓[1] 

机构地区：[1]天津出入境检验检疫局,天津300461

出　　处：《食品研究与开发》2014年第18期80-82,共3页Food Research and Development

基　　金：天津出入境检验检疫科技计划项目(TK079-2013)

摘　　要：建立了奶粉中16种多环芳烃的气相色谱/质谱测定方法。样品经过乙酸乙酯超声波提取后,用GC/MS分离测定,优化了16种化合物的分离测定条件。结果显示,PAH的在0.005μg/mL^1.0μg/mL范围内线性关系良好,线性相关系数均大于0.98,该方法的检出限为0.1μg/kg^5.0μg/kg,空白基质加标3个水平(5、10、50μg/kg)加标回收率为68.5%到107.9%,相对标准偏差为0.1%~18.7%。该方法具有前处理简单、灵敏度高、准确度好、能同时分离测定多种多环芳烃等优点,适用于奶粉中多环芳烃的快速分析测定。A GC-MS/MS method was developed to determine the polycyclic aromatic hydrocarbons （PAHs） in infant formula. In this method, the samples were pretreated by ultrasonic extraction with ethyl acetate and then analyzed on a DB-5MS column. The method showed a good linearity in the range of 0.005μg/mL-1.0μg/mL for PAHs with R2〉0.98, and detection limits between 0.1μg/kg-5.0μg/kg. The average recoveries of PAHs varied from 68.5%to 107.9%with the relative standard deviations of 0.1%-18.7%at the spiked levels 5, 10,50μg/kg. The method was easy, quick and had good accuracy and low detection limits. It was satisfied with successfully determination of infant formula samples by this analytical approach.

关 键 词：多环芳烃 婴幼儿奶粉 气相色谱/质谱 

分 类 号：O657.63[理学—分析化学] TS252.51[理学—化学]