本文报道用Stahl热微量分析(TAS)法于挥发油和某些含有挥发油的生药的测定。TAS法的原理是;试样加热转化为蒸汽,这种蒸汽状态的物质,必要时借助于推进剂,采取不同的运送方法,最后用薄层层析或 In this paper, the determination of volatile oil and some crude drugs containing volatile oil by Stahl Thermal Trace Analysis (TAS) is reported. The principle of the TAS method is that the sample is heated and converted into steam, and the substance in the vapor state, if necessary, is propelled by a propellant to be transported in different ways, and finally subjected to thin layer chromatography or