In order to solve the problem of poor repeatability of trace MA and 1.2-butadiene in the extracted carbon components,under the premise of ensuring the same separation effect,comparative analysis of chromatogram on the Al2O3/S and Al2O3/KCl chromatographic colum,We can draw a conclusion:there is a relatively obvious adsorption of the trace MA and 1.2-butadiene on Al2O3/S chromatographic column,and Al2O3/KCl chromatographic column didn't.However,the Al2O3/KCl capillary chromatographic column exhibits no conspicuous adsorption phenomenon for trace amounts of PD and 1,2-butadiene,so,It's more appropriate for C4 components who contains trace amounts of PD and 1,2-butadiene.
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