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[1]高记,秦金平,王建,等.二维气相色谱法测定汽油中甲缩醛、甲醇、乙醇和苯的含量[J].南京工业大学学报(自然科学版),2016,38(01):27-32.[doi:10.3969/j.issn.1671-7627.2016.01.005]
 GAO Ji,QIN Jinping,WANG Jian,et al.Determination of methylal,methanol,ethanol, and benzene in gasoline by two-dimensional gas chromatography[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2016,38(01):27-32.[doi:10.3969/j.issn.1671-7627.2016.01.005]
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二维气相色谱法测定汽油中甲缩醛、甲醇、乙醇和苯的含量()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
38
期数:
2016年01期
页码:
27-32
栏目:
出版日期:
2016-01-10

文章信息/Info

Title:
Determination of methylal,methanol,ethanol, and benzene in gasoline by two-dimensional gas chromatography
文章编号:
1671-7627(2016)01-0027-06
作者:
高记秦金平王建陈名浪余鹏程
南京工业大学 化工学院,江苏 南京 210009
Author(s):
GAO JiQIN JinpingWANG JianCHEN MinglangYU Pengcheng
College of Chemical Engineering,Nanjing Tech University,Nanjing 210009,China
关键词:
汽油 二维气相色谱 甲缩醛 甲醇 乙醇
Keywords:
gasoline two-dimensional gas chromatography methylal methanol ethanol benzene
分类号:
O657.7
DOI:
10.3969/j.issn.1671-7627.2016.01.005
文献标志码:
A
摘要:
利用二维气相色谱的原理和反吹技术,将预柱中的待测组分切换到分离柱中,建立汽油中甲缩醛、甲醇、乙醇和苯含量的检测方法。在进样状态下,待样品中被测组分(甲缩醛、甲醇、乙醇和苯)从预柱(SE-30)中流出后,将六通阀切换到反吹状态,重组分被反吹出预柱放空,被测组分(甲缩醛、甲醇、乙醇和苯)进入强极性的PEG-20M毛细管色谱柱中进行分析。采用氢焰离子化检测器(FID)、外标法定量进行分析。结果表明:在检测范围内线性关系良好,甲缩醛、甲醇、乙醇和苯4种组分的相关系数(r2)分别为0.998 7、0.999 2、0.999 5和0.999 4; 对标准样品进行6次重复实验,相对标准偏差(RSD)均小于2%,回收率为95.5%~105.3%。该方法操作简单,灵敏度高,检测结果准确、可靠。
Abstract:
Determination of methylal,methanol,ethanol, and benzene in gasoline was established based on the principle of two-dimensional gas chromatography and the back flushing technique. The analytes were cut from pre-column to separation column.Under the injection condition,when the light components(methylal,methanol,ethanol,and benzene)flowed out of pre-column(SE-30),the 6-port switching valve was switched to the back flushing state to let them enter the strong polar PEG-20M capillary column for analysis,while the heavy components were back flushed out the pre-column vent. Flame ionization ditector(FID)and external standard method were applied to the quantitative analysis.Results showed that the four light compounds had a good linear relation with the correlation coefficients of 0.998 7,0.999 2,0.999 5 and 0.999 4,the relative standard deviation(RSD)of less than 2%,and the recovery rate range of 95.5%-105.3%.The method was proved to be simple,sensitive,accurate, and reliable.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-12-15
作者简介:高记(1989—),男,河南南阳人,硕士,主要研究方向为色谱应用; 秦金平(联系人),副教授,E-mail:jpqin@njtech.edu.cn.
引用本文:高记,秦金平,王建,等.二维气相色谱法测定汽油中甲缩醛、甲醇、乙醇和苯的含量[J].南京工业大学学报(自然科学版),2016,38(1):27-32..
更新日期/Last Update: 2016-01-20