荧光指示剂柱色谱吸附法测定汽油组成影响因素的研究

Studies on Influence Factors of Method of Fluorescent Indicator Adsorption

中文关键词:  荧光指示剂吸附法  汽油  硅胶  烃类型  表面积

英文关键词:fluorescent indicator adsorption method  gasoline  silica gel  hydrocarbon types  surface area

中文摘要:

      主要考察了硅胶、吸附柱、荧光指示剂、含氧化合物、脱戊烷等因素对测定汽油组成的影响,并用标准样品进行了验证,找出了影响试验结果准确度的主要因素,提高了该方法的精密度和实用性.实验证明,硅胶孔容和试样是否脱戊烷是影响汽油烃类组成测定结果的主要因素,随着硅胶孔容增大,饱和烃测定值降低,而烯烃测定值逐渐增大.汽油中C₂～C₅烃含量较高时,应按SH/T0062试验法脱除戊烷.

英文摘要:

      The effects of silica gel, adsorption column, fluorescent indicator, oxygenated blending components, sample depentaning and other factors on the determination results of saturates, olefins, and aromatics in gasoline were studied. The main influence factors on the result of gasoline component and the method accuracy were found, and the precision and the practicability of the method are improved. It was verified that the pore volume of silica gel and the sample depentaning process are main influence factors. The result of saturates depresses,and the olefins in gasoline increases with enlargement of pore volume of silica gel. If C₂～C₅ content in gasoline is high, depentaning process should be done according to SH/T 0062.