采用气体预浓缩仪-气相色谱质谱分析纸制饭盒中的异味物质  

Analysis of Odour in Paper Made Lunch Boxes by Cryogenic Preconcentrator-gas Chromatography/Mass Spectrometry

作　　者：胡静 黄诗惠 HU Jing;HUANG Shi-hui(SGS-CSTC Standards Technical Services Co.,Ltd.,Guangdong Guangzhou 510663,China)

机构地区：[1]通标标准技术服务有限公司广州分公司,广东广州510663

出　　处：《广州化工》2024年第18期120-121,150,共3页GuangZhou Chemical Industry

摘　　要：建立了一种采用气体预浓缩仪-气相色谱质谱联用法对纸制饭盒进行异味分析的方法。所采用的内部惰性化处理的采样瓶,具有和苏玛罐相同的惰性程度,但在进气口处进行了特殊处理,可以将较大尺寸的样品放入其中密封后进行条件性的孵化,能模拟样品在实际使用场景下释放异味物质。由此获得的气体样品可以直接进入气体预浓缩仪-气相色谱质谱仪中分析。研究发现,该方法灵敏度高,以甲苯作为半定量标准物质,检出限为0.5μg/m^(3),能鉴定出样品释放出来的痕量的异味物质,能为异味源的排查提供有效证据。另外,该方法还具有所需样品采气量少,操作简便等优点。An analytical method of analysis of odour in paper made lunch boxes by cryogenic preconcentrator-gas chromatography/mass spectrometry(GC/MS)was developed.The sampling bottle with internal inert treatment had the same degree of inertness as the Suma tank,but with a special treatment at the air inlet,which allowed a sample of larger size to be placed in it and sealed for conditional incubation,which can simulate the release of odorous substances in the actual use scenario.The acquired gas sample can be directly analyzed using the cryogenic preconcentrator-GCMS.The sensitivity of this method was high,the method detection limit was 0.5μg/m^(3) when using toluene as the semi-quantitative standard,that means this method can identify trace odour substances,which can provide the effective evidence for the investigation of odour sources.In addition,this method owned the advantages of low sampling volume,easy operation,and etc.

关 键 词：气体预浓缩仪 气相色谱质谱联用仪 异味分析 

分 类 号：O657.63[理学—分析化学] TS206[理学—化学]