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.

• 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。