通过富集采样法测定食品级二氧化碳中超低含量苯  

Determination of Ultra-low Levels of Benzene in Food Additive Carbon Dioxide by Concentrated Sampling Method

作　　者：董翊[1] 姜阳[1] 任逸尘 DONG Yi;JIANG Yang;REN Yichen(Shanghai Institute of Measurement and Testing Technology,Shanghai 201203,China)

机构地区：[1]上海市计量测试技术研究院,上海201203

出　　处：《低温与特气》2023年第5期48-50,共3页Low Temperature and Specialty Gases

基　　金：上海市市场监督管理局科研计划项目(2021-16)。

摘　　要：为解决食品添加剂二氧化碳中苯含量检测方法的检出限高的问题,采用吸附管对二氧化碳样品进行富集,用气相色谱质谱法检测。此方法避免了其他杂质的干扰,提高了检测超低含量苯的能力。当二氧化碳气体采样量为300 mL时,方法检出限可达0.001μL/L,测量重复性<5%(n=7)。To solve the problem of high detection limit of benzene in food additive carbon dioxide,carbon dioxide samples were concentrated by adsorption tubes and detected by gas chromatography mass spectrometry.The interferences of other impurities are avoided and the ability to detect ultra-low levels of benzene is improved.When the sampling amount of carbon dioxide gas is 300 mL,the detection limit of the method can reach 0.001μL/L,and the measurement repeatability are less than 5%(n=7).

关 键 词：富集 二氧化碳 苯 吸附管 

分 类 号：TQ116.3[化学工程—无机化工]