空气中吲哚和甲基吲哚的气相色谱法

Determinations of Indole and Methylindole in Air by Gas Chromatography

空气中的吲哚和甲基吲哚采集在碱性多孔微球硅胶上，用１＋１丙酮－二硫化碳混合溶剂解吸，经碱性ＰＥＧ２０Ｍ柱分离，氢焰离子化检测器气相色谱法测定。方法的检出限为３．５ｍｇ／Ｌ，最低检出浓度为０．８ｍｇ／ｍ３（采４．５Ｌ空气）。

Indole and methylindole in air were collected with alkaline multiport silicagel, desorbed with 1+1 acetone CS 2, and determined by GC FID. Detectable limit is 3 5mg/L. The minimum detectable concentration is 0 8mg/m 3.