标题：Development of a Low-Cost Evolved-Gas Analysis (EGA) Device for the Rapid Detection of Volatile Organic Compounds (VOCs) from Common Household Items
摘要：Volatile organic compounds (VOCs) are present in variety of food items including herbs, spices, and citrus, coffee, and flavored cigarettes. Gas Chromatography (GC), often paired with mass spectrometry (MS) is one of the most common instrumental methods to identify these VOCs. A myriad of approaches exist to prepare and deliver these VOCs for chromatographic analysis; examples include headspace, SPME, and solvent extraction. Herein, we describe an alternate approach for VOC analysis based on evolved gas analysis (EGA). A simple, low-cost device is connected to the injector port of a GC. Solid samples are introduced into the oven of the device for a set time and any VOCs produced are immediately carried to the GC for analysis. This instrument has been adapted for analysis of VOCs from solid samples in an analytical chemistry course.
关键词：Evolved gas analysis; Volatile organic compounds; Gas chromatography; Herbs; Spices; Coffee; Tobacco
