摘要
自制的气提装置与气相色谱仪联用，拓宽了气相色谱仪的使用范围。利用间歇气提气相色谱法对４种聚苯乙烯样品中的苯乙烯单体进行了测定。本方法避免了样品的前处理，回收率、标准偏差以及变异系数分别是９９．４％，１．９５％，１．９６％。本研究为固体材料中易挥发组分的定量测定提供了可靠、简便的检测手段。
The usage of gas chromatography (GC) is developed by a self-made discontinu -ous gas extracting device (DGE) in combination with GC, the styrene monomer in four kinds of polystyrene sample are determined by the use of DGE-GC. This method avoids the pretreatment of samples. its recovery, its standard deviation and its variation coefficient are 99. 4%, 1. 95 % and 1. 96 % respectively. This study provides a reliable and convenient test method for the quantitative determination of volatile components of solid materials.
关键词
间歇气提
气相色谱法
苯乙烯
聚苯乙烯
discontinous gas extraction
gas chromatography
styrene
polystyrene
