Identification of organic acids in bayer liquors by GC-MS: a comparison using butylation and methylation |
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Authors: | Xiao Jian Bo Jiang Xin Yu Chen Xiao Qing |
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Institution: | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, PR China. |
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Abstract: | 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 (C(4)-C(10)) are fit into the linear relationship in Microsoft Excel. |
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