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C12−C30 petroleum alkylbenzenes with regular isoprenane chains
Summary Monocyclic aromatic hydrocarbons were identified by GC/MS in Soviet petroleums; these hydrocarbons have a regular isoprenane chain and correspond to the following homologous series:Expand
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C12−C30 n-alkylbenzenes in crude oils
Summary o 1. A study of crude oils from various regions of the Soviet Union showed that the composition of monocyclic aromatic fractions of most oils is represented by alkylbenzenes with normal alkylExpand
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C/sub 12/-C/sub 30/ n-Alkylbenzenes in crude oils
A study of crude oils from various regions of the Soviet Union shows that the composition of monocyclic aromatic fractions of most oils is represented by alkylbenzenes with normal alkyl chain, whichExpand
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Hexacyclic monoaromatic hydrocarbons of petroleum
Summary o 1. The presence of a new homologous series of hexacyclic C 32 –C 35 hydrocarbons containing one aromatic ring was confirmed in petroleum. 2. Mass-spectrometry established that theseExpand
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Biological degradation of petroleum
In recent years, experimental research into chemical alteration of petroleum by microorganisms has aroused considerable interest. Experimentation in biological conversion of petroleum carried out inExpand
Relict tetracyclic and pentacyclic hydrocarbons in ancient oils of the Siberian Platform
Oils from the southern part of the Siberian Platform are among the most ancient oils in the Soviet Union. The relative abundance of relict polycyclic hydrocarbons were determined by gas-liquidExpand
Chemical types of petroleum and natural transformation of petroleums
Chemical classification was developed for petroleums, based on quantitative distribution indices of normal and isoprenoid paraffins obtained directly from chromatographic curves of crude oils. TheExpand
Asphaltenes as indicators of the geochemical history of oil
A method of decomposition of native asphaltenes from naphthenic oils is proposed as a source of information on the geochemical history of the oils. It is demonstrated that formation of naphthenicExpand
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C/sub 12/-C/sub 30/ petroleum alkylbenzenes with regular isoprenane chains
Isoprenane (isoprenoid) alkyl chains, in addition to normal chains, are widely distributed in nature and affects the individual composition of the saturated hydrocarbons of petroleums. At the sameExpand