摘要:

Indoor air is a complicated matrix. There are various volatile organic compounds (VVOCs) such as formaldehyde and volatile organic compounds (VOCs) such as benzene, toluene, and xylene in indoor air. They are of low concentration and have different polarities. This chapter first introduces the sampling methods, sample treatment, and analysis of VVOCs (mainly carbonyls and ketones) in indoor air. The 2,4-dinitrophenyl-hydrazine (DNPH) derivatization – high-performance liquid chromatography (HPLC) method – is the most commonly used for the determination of VVOCs. Then four sampling methods for VOCs, including active sampling, passive sampling, whole-air sampling, and solid-phase microextraction (SPME), are introduced. Thermal desorption and solvent extraction are two commonly used methods to pretreat the samples for further analysis. GC combined with MS, FID, ECD, or BID is frequently used for the VVOCs, VOCs, quantitation.

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