Composition of carboxylic acids from distillates from Turkmenian crudes

Results are presented from a mass spectroscopic study of carboxylic acids recovered from kerosene distillates at the Krasnovodsk refinery and the hydrocarbons obtained by decarboxylation of individual fractions of the acids. The acids were prepurified and separated by ion exchange chromatography. The peak intensities of the fragment ions were used as analytical properties in the mass spectra of the trimethylsilyl esters of the acids. The relative contents of acids in seven groups differing in degree of hydrogen unsaturation were determined along with the carbon number distribution in each group. A comparison was made of the group composition of the original fraction of acids with the quantitative content of the products obtained during separation.