Open AccessSEPARATION AND QUANTITATIVE DETERMINATION OF LINEAR AND CYCLIC/BRANCHED ALKANES IN BRAZILIAN PETROLEUM USING UREA ADDUCTION AND GAS CROMATOGRAPHY: A CASE STUDY REVISITED
Author(s) -
Elaine Marotta,
Francisco Radler de Aquino Neto,
Débora de Almeida Azevedo
Publication year - 2014
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.5935/0100-4042.20140265
Subject(s) - urea , petroleum , chemistry , liquefied petroleum gas , chromatography , organic chemistry
A complete analysis of oils and their fractions allows correlations to be defined between their composition and derivatives or related geological materials. This work focused on optimization and implementation of a method for separation and quantification of n-alkanes in Brazilian oil samples by urea adduction and GC-FID techniques. Ten samples with different ºAPI were analyzed in triplicate to quantify individual n-alkanes and cyclic/branched alkane fraction. For individual quantification of n-alkanes, internal standardization with deuterated n-tetracosane was used. The use of urea adduction for the separation and quantification of n-alkanes was highly effective, with recovery values of above 80%