| 多维气相色谱法测定石脑油族组成 |
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| 引用本文： | 陆海萍.多维气相色谱法测定石脑油族组成[J].石化技术与应用,2011,29(5):457-461. |
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| 作者姓名： | 陆海萍 |
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| 作者单位： | 中国石化扬子石化公司质检中心,江苏南京,210048 |
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| 摘 要： | 建立了一种采用具有多阀、多柱和吸附阱的多维气相色谱测定石脑油族组成的分析方法。通过5个阀对7根选择性不同的色谱柱进行准确切换控制,使样品分别进入不同的色谱柱中,分离出正构、异构烷烃,正构、异构烯烃,环烷烃,环烯烃和芳烃,然后利用程序升温,使各族组分再按碳数分离后进行定量分析。对标样的测定结果表明,组分质量分数可精确至0.01%,加标回收率为99.7%～108.6%,相对标准偏差为0.24%～1.40%。
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| 关 键 词： | 多维气相色谱 石脑油 族组成 吸附阱 程序升温 回收率 |
Determination of naphtha group composition by multi-dimensional gas chromatography |
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| Lu Haiping.Determination of naphtha group composition by multi-dimensional gas chromatography[J].Petrochemical Technology & Application,2011,29(5):457-461. |
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| Authors: | Lu Haiping |
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| Affiliation: | Lu Haiping(Quality Inspection & Management Center of Yangzi Petrochemical Co Ltd,SINOPEC,Nanjing 210048,China) |
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| Abstract: | A determination method of naphtha group composition by multi-dimensional gas chromatography with multi-valves,chromatographic columns and adsorption traps were established.In this method,5 walves were used to switch 7 columns with different functions,that the sample could be divided several groups and went into corresponding columns,where it was separated into alkane and isoalkane,alkene and isoalkene,cyclane and cyclone,aromatic.The components in each group were separated in carbon number by temperature pr... |
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| Keywords: | multidimensional gas chromatography naphtha group composition adsorption trap temperature programming percent recovery |
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