摘要
本文探究了顶空气相色谱法测定食品用洗涤剂中的1,4-二噁烷含量的测定方法。在0.5mg/kg~30mg/kg范围内,1,4-二噁烷与4-甲基-1,3-二噁烷内标物的色谱峰面积比值与浓度比值具有良好的线性关系,相关系数为0.9978。样品在1mg/kg、5mg/kg和20mg/kg浓度加标时,回收率范围为96.7%~110.5%,相对标准偏差为1.4%~4.3%。精密度测定时相对标准偏差为2.8%(n=6)。对20批次市售的不同品牌不同批次的食品用洗涤剂进行检测分析,结果显示有10批次检出值高于检测下限值,检测值在0.56mg/kg~2.61mg/kg。该方法可为食品用洗涤剂中1,4-二噁烷的测定提供参考依据。
Headspace gas chromatography was used to determine the content of 1,4-dioxane in food detergents.In the range of 0.5mg/kg~30mg/kg,the chromatographic peak area ratio of 1,4-dioxane and 4-methyl-1,3-dioxane internal standard has a good linear relationship with the concentration ratio,and the correlation coefficient is 0.9978.The recoveries ranged from 96.7%to 110.5%and the relative standard deviations were 1.4%to 4.3%at the concentrations of 1mg/kg,5mg/kg and 20mg/kg.The relative standard deviation of precision measurement is 2.8%(n=6).20 batches of different brands of different batches of food detergents were tested and analyzed,and the detected value of 10 batches was higher than the detection limit value,which was between 0.56mg/kg and 2.61mg/kg.This method can provide reference for the determination of 1,4-dioxane in food detergents.
作者
吴志强
唐小叶
Wu Zhi-qiang;Tang Xiao-ye(Industrial Product Testing Institute of JiangXi General Institute of Testing and Certification,Nanchang Jiangxi 330000,China;Food Inspection and Testing Research Institute of JiangXi General Institute of Testing and Certification,Nanchang Jiangxi 330000,China)
出处
《江西化工》
CAS
2024年第1期42-44,49,共4页
Jiangxi Chemical Industry
