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介绍一种新开发的毛细管气相色谱测定三苯基解（Pph3）纯度的试验方法。该法载气为氦气，选用丙酮溶解样品，溶液经10m×0．53mm×2．65μmOV－1石英毛细管柱分离，采用TICD检测归一化法定量。Pph3纯度分析数据RSD0．014％；样品单次分析时间9min．方法操作简单、快速，结果精密、准确，适用于Pph3纯度的质控分析。
A newly developed test method for the determination of purity of triphenylphosphoric acid (Pph3) by capillary gas chromatography was introduced. The carrier gas is helium, acetone is used to dissolve the sample, and the solution is separated by a 10m × 0.53mm × 2.65μmOV-1 quartz capillary column and normalized by TICD. Pph3 purity analysis data RSD0.014%; sample single analysis time 9min. The method is simple, rapid, accurate and accurate. It is suitable for quality control analysis of Pph3 purity.