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.
出处
《食品研究与开发》
CAS
北大核心
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)
