This paper describes the composing and character of gas chromatography column PEG20M, DNP+TWEEN60 (80) and 402, to select correct column in the analysis work.

• 摘要论述了聚乙二醇(PEG)20M、邻苯二甲酸二壬酯(DNP)+Tween60(80)混合柱和402柱的构成及特点，以求在分析工作中正确地选用。