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Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume 45,
Number 4, April 2007, pp.183-188
Identification of Organic Acids in Bayer Liquors
by GC–MS: A Comparison Using Butylation and Methylation
Jian Bo Xiao, Xin Yu Jiang, and Xiao Qing Chen
College of Chemistry and Chemical Engineering, Central South University,
Changsha 410083, PR China
Two well known derivatization methods, butylation
and methylation, are compared by gas chromatography (GC)–mass
spectrometry (MS) to identify organic acids in Bayer liquors.
These two derivatization methods should be combined together for
the determination of the carboxylic acids. Twenty-four organic
acids are identified by GC–MS and 13 organic acids are firstly
found in Bayer liquors. The retention times and the carbon number
of these seven n-dicarboxylic acids (C4–C10) are fit into
the linear relationship in Microsoft Excel.
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