Improved separation with a low temperature column in micro high performance liquid chromatography

Jinno, Kiyokatsu; Nomura, Hitoshi; Hirata, Y.

doi:10.1002/jhrc.1240030612

Cited by 13 publications

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References 6 publications

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“…For instance gasolines must answer to severe specifications which are checked traditionaly by normalised tests often inaccurate or unadapted (FIA-ASTM D 1319). Several methods using HPLC or supercritical fluid chromatography have been published recently (10)(11)(12)(13)(14)(15)(16)(17) and some are at this time under evaluations by ASTM Association.…”

Section: Introductionmentioning

confidence: 99%

Hydrocarbon Groups Type Analysis of Petroleum Products by HPLC on Specific Stationary Phases

Félix

Thoumazeau

Colin

et al. 1987

Journal of Liquid Chromatography

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The hydrocarbon group types analysis of a large number of petroleum products by HPLC equipped with columns of suitable selectivity is described. An effective approach to the factors influencing the specificity of the columns was developped and stationary phases were synthetised in fonction of the products to be separated. All new phases were characterized by elemental, 2%; and 3 % NMR analyses. The potentialities of theses phases were illustrated by analysis of selected samples either of fundamental or of industrial interest.

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Section: Introductionmentioning

confidence: 99%

Hydrocarbon Groups Type Analysis of Petroleum Products by HPLC on Specific Stationary Phases

Félix

Thoumazeau

Colin

et al. 1987

Journal of Liquid Chromatography

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Group‐type analysis of gasoline range materials by high performance liquid chromatography

Jinno

Nomura

Hirata

1980

J. High Resol. Chromatogr.

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SummaryHydrocarbon group-type analysis of gasoline-range materials is a very important method forevaluatingfeedstocksand products in the petroleum industry. In this paper the method of grouptype analysis of gasoline-range materials by high performance liquid chromatography is investigated.The results demonstrate that the separation of saturates and olefins can be accomplished with reactivated and cooled columns.The low-temperaturecolumns and the useof n-hexane as an eluent playa particularly important role in the improvement of the separation.

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Investigation of the low temperature effect in micro high performance liquid chromatography‐open tubular microcapillary column

Jinno

Hirata

1981

J. High Resol. Chromatogr.

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The experimental results are represented in Figure 1 ; as in ref.[5], the log k'and Csaxes have opposite directions. Although only few values of solubility are available, the variations of log kvalues and log CS values of 2-hydroxynaphthalenc? are clearly seen to be parallel; some deviations are observed for the less accurately known low K and high Cs values. For 2,3-dihydroxynaphthalene only two Cs values are available in the range of good accuracy, so thatonlyageneral ideacan begainedoftheanalogiesoflog K and log Cs; however, the vertical distance between the plots is clearly much larger than for 2-naphthol. This is in accord with earlier observations [3]. The retention vs. eluent composition relationships are approximately linear, as is frequently observed for liquidlliquid and liquidlsolid systems of this type [7,8].The experimental results confirm the important role of solution effects for nonpolar adsorbents [4,9-141; however, for polar solutes the selectivity (A log K) is apparently attributable not only to differences of solubility (A log CS) but also to other factors.

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Improved separation with a low temperature column in micro high performance liquid chromatography

Cited by 13 publications

References 6 publications

Hydrocarbon Groups Type Analysis of Petroleum Products by HPLC on Specific Stationary Phases

Hydrocarbon Groups Type Analysis of Petroleum Products by HPLC on Specific Stationary Phases

Group‐type analysis of gasoline range materials by high performance liquid chromatography

Investigation of the low temperature effect in micro high performance liquid chromatography‐open tubular microcapillary column

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