摘要
本着降低生产成本,开发仪器功能,提高工作效率,建立了双柱切换-反吹技术-气相色谱法(内标法)同时测定汽油中含氧化合物与苯。考察色谱阀的切换时间,柱温等因素对结果的影响,确定了最佳操作条件,同时对方法的精密度和重复性进行验证。结果表明,含氧化合物和苯的相对标准偏差为0.05%～0.2%,加标回收率分别为98.8%和96.7%,同时测定汽油中含氧化合物和苯方法的建立,其分析结果与石化标准方法分析结果一致。
In order to reduce production cost, develop instrument function and improve working efficiency, a two-column switching and back-blowing technique by gas chromatography （internal standard method） was established to simultaneously determine oxygenates and benzene in gasoline. The effects of switching time and column temperature on the results were investigated. The optimal operating conditions were determined, and the precision and repeatability of the method were verified. The results show that the method is established for the determination of various oxygenated compounds and benzene in gasoline, and the results are consistent with those of petrochemical standards.
作者
郭玉萍
李博
GUO Yuping;LI Bo(Yan′an Petrochemical Plant,Luochuan,Shaanxi,727406,China)
出处
《中国无机分析化学》
CAS
2018年第5期18-22,共5页
Chinese Journal of Inorganic Analytical Chemistry
关键词
气相色谱法
双柱切换
汽油
含氧化合物
苯
gas chromatography
double column switching
gasoline
containing oxide compounds
benzene
