色谱法测定加氢汽油碳八芳烃条件的优化

Optimization of the Conditions for Determination of Carbon Eight Aromatics in Gasoline by Chromatography

在加氢汽油碳八的分析中,传统的色谱分析条件无法达到理想的分离效果,试验结果表明,在传统的色谱分析条件下,通过优化程序升温,即:初温35℃,保持10分钟,以0.5℃/min升至60℃,保持10分钟,再以10℃/min升至200℃,保持30 min,碳八馏份中的间﹑对二甲苯得到很好的分离,相对标准偏差和回收率分别为1.5%~2.5%和95%~105%。解决了炼油生产中加氢汽油碳八的分析准确度。

In the analysis of gasoline hydrogenation of carbon eight, traditional chromatographic conditions can not achieve the ideal separation effect, experimental results show that the analysis in the traditional chromatographic conditions, by optimizing the temperature programmed, namely： the initial temperature of 35℃, keep 10 minutes to 0.5℃/min to 60℃, keep for 10 minutes. And then to 10℃ /min to 200℃, 30 min, eight fractions of carbon and xylene are well separated. The relative standard deviations and the recoveries were 1.5 %-2.5 % and 95 %-105 %. To solve the analysis of hydrogen gasoline refinery production with carbon eight accuracy.