摘要
建立了一种同位素稀释—气相色谱—质谱法同时测定婴幼儿配方奶粉中8种己二酸酯增塑剂含量的方法。婴幼儿配方奶粉样品以水溶解完全后,选用正己烷作为萃取溶剂,经超声提取后采用GC-MS选择离子模式对8种目标物进行定性、定量分析。方法具有良好线性,相关系数R2>0.999。检出限为0.08~0.12mg/kg,定量限为0.2~0.4mg/kg,加标回收率为94.8%~103.3%,相对标准偏差(RSD)<8.1%。该方法快速、简单、灵敏度高、重复性好,适用于婴幼儿配方奶粉样品中多种己二酸酯含量的测定。
A method was developed for the simultaneous determination of 8 adipate plasticizers in infant formula by isotope dilution-gas chromatography-mass spectrometry(GC-MS).With the infant formula sample completely dissolved in water,n-hexane was used as the extraction solvent.After ultrasonic extraction,qualitative and quantitative analysis were carried out by GC-MS in selected ion monitoring modes.The correlation coefficients(R2)of 8 adipate plasticizers were over 0.999,The limits of detection(LODs)were 0.08~0.12 mg/kg and the limits of quantification(LODs)were 0.2~0.4 mg/kg.The average recoveries of 8 adipate plasticizers in milk powder were ranged from 94.8%to103.3%.In addition,the relative standard deviations(RSDs)were less than 8.1%.The method has advantage of simplicity,sensitivity and repeatability,which is suitable for testing of adipate plasticizers infant formula.
作者
黄永辉
HUANG Yong-hui(Fujian Inspection and Research Institute.for Product Quality,Fuzhou,Fujian 350002,China;National Quality Supervision and Testing Center for Processed Food,Fuzhou,Fujian 350002,China)
出处
《食品与机械》
北大核心
2020年第9期77-81,共5页
Food and Machinery
基金
福建省产品质量检验研究院科技项目(编号:KY201816A)。
