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建立一套测定乙炔法醋酸乙烯生产主要产物醋酸乙烯、醋酸、乙醛、丙酮、巴豆醛的气相色谱分析方法.以乙酸正丁酯为内标物,主产物醋酸乙烯和副产物乙醛、丙酮、巴豆醛分步测定.结果表明,各组分能完全分离,各组分质量比与峰面积比线性关系良好,线性相关系数≥0.9990,重复性相对标准偏差RSD≤2.85%,各组分3种不同质量浓度加标回收率在94.60%~104.59%之间.该法简单、快速、测量准确,可用于工业生产快速分析.
To establish a gas chromatographic method for the determination of vinyl acetate, acetic acid, acetaldehyde, acetone and crotonaldehyde, which are the main products of vinyl acetate production by acetylene method.With n-butyl acetate as the internal standard, the main products of vinyl acetate and by-products acetaldehyde, acetone The results showed that each component could be completely separated and the mass ratio of each component had a good linear relationship with the peak area, the linear correlation coefficient was ≥0.9990, the relative standard deviation of repeatability was RSD≤2.85% The recoveries of spiked samples at different concentrations were between 94.60% and 104.59% .The method was simple, rapid and accurate and could be used for rapid analysis of industrial production.