Elsevier

Analytica Chimica Acta

Volume 24, 1961, Pages 343-356
Analytica Chimica Acta

Gas-liquid chromatographic analysis of aromatic hydrocarbons boiling between 202° and 280° in a low-temperature coal tar

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Abstract

Gas—liquid chromatography, coupled with infrared and ultraviolet spectrophotometry, was used to analyze aromatic hydrocarbons boiling between 202° and 280° in the neutral oil portion of a low-temparature bituminous coal tar. A total of 48 compounds was identified, of which 20 were alhylnaphthalenes. Of these compounds, nine had also been mentioned in a previous report. Quantitative determinations were made on nearly all of the components. The analysis, especially from a quantitative: standpoint, is by far the most detailed one carried out to date for the alkylnaphtlialcne cut of a low-temperature coal tar. It was shown that alkylnaphthalenes with equal numbers of carbon atoms in tlieir alkyl groups displayed a linear relationship between log relative retention and normal boiling point, a situation similar to that for the alkylbenzene series, and that the values for the C11, C12 and C13 alkylnaphthalenes lie on three parallel lines. Examples of the utility of these correlations arc given.

Résumé

Les auteurs ont appliqué Chromatographie gaz-liquide, combinée á spectrophotométric dans l'infra-rougc et l'ultra-violct, á l'analyse d'hydrocarbures aromatiques de goudrons, á point d'ébullition compris entre 202 et 280°. On a pu identifier ainsi jusqu'á 48 constituants. 'Presque toutes ces substances ont pu ^́etre déterminées quantitativement.

Zusammenfassung

Beschreibung der Analyse eines aromatischer Kohlenwasserstoffes mit Siedepunkten, zwischen 202°—280°C aus der Neutralölfraktion eines Niedertemperatur- Bitumenteeres durch Gaschromatographie in Verbindung mit IR und UV-Spektrophotometric. Es konnten 48 verschiedene Verbindungen nachgewiesen und zum grössten Teil quantitativ bestimmt werden.

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Presented at the Symposium on Tar and Pitch from Coal at the American Chemical Society meeting in New York, N.Y., September, 1960

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