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本文提出一个测定聚合级丙烯中微量丙二烯和丙炔的气相色谱法。使用了2米Apiezon L改性微球色谱柱,当时,每米理论板数达3000,使C_1-C_4低级炔中14个组分在柱温85℃时得到良好分离。最低检测浓度1ppm,相对误差≤±10％。这一新型柱填料也可用于聚合级乙烯和C_4烯烃中微量炔类杂质的测定以及混合C_4炔类中分组的分离和测定。
This paper presents a gas chromatographic method for the determination of trace amounts of allene and propyne in polymeric grade propylene. Using a 2-meter Apiezon L modified microsphere column, at that time, the number of theoretical plates per meter reached 3000, so that the 14 components in the C 1 -C 4 lower alkyne were well separated at a column temperature of 85 ° C. The lowest detection concentration of 1ppm, the relative error ≤ ± 10%. This new column packing can also be used for the determination of trace acetylenic impurities in polymeric grade ethene and C 4 olefins as well as for the separation and determination of groups in mixed C 4 acetylenes.