Collect. Czech. Chem. Commun. 2007, 72, 1295-1305

Determination of High-Molecular-Weight n-Alkanes of Petroleum Origin by High-Temperature Gas Chromatography

Pavel Šimáček*, Daniel Maxa and Gustav Šebor

Department of Petroleum Technology and Petrochemistry, Institute of Chemical Technology, Prague, Technická 5, 166 28 Prague 6, Czech Republic


This paper deals with the identification and determination of high-molecular-weight n-alkanes of petroleum origin using high-temperature gas chromatography (HTGC). Analysed samples, which were the concentrates of saturated hydrocarbons, differed in both the total content of n-alkanes and their distribution. They were analysed on various types of HTGC columns differing in length and inner diameter. While the determined total content of n-alkanes was comparable for all the chromatographic columns, differences were found in the efficiency of separation of n-alkanes over C40 as well as in their quantitative elution.

Keywords: High-temperature gas chromatography (HTGC); Petroleum; Saturated hydrocarbons; High-molecular n-alkanes.

References: 21 live references.