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- W1912670063 abstract "The literature data indicates that the results of gas chromatographic analysis of such low-volatile polar compounds as aliphatic dicarboxylic acids are characterized by high irreproducibility. Most of the previously published GC retention indices seem to be very spread out and appear to be erroneous. Similar irreproducibility is typical for some other physicochemical properties of these acids, namely melting temperatures, water solubility, etc. The experimental testing of the possibilities of gas chromatographic and/or GC-MS analysis of simplest dicarboxylic acids using standard non-polar polydimethylsiloxane stationary phases (BPX-1, RTX-5) has been fulfilled. It indicates that some compounds of this series (e.g., glutaric acid) are determined without decomposition, for others the interaction with solvent is typical (oxalic acid), and in some cases the single compounds observed are the products of thermal destruction (citric acid). Namely, the analysis of the solution of oxalic acid in isopropyl alcohol permits us to detect two esters – monoisopropyl and diisopropyl oxalates. Keywords: Aliphatic dicarboxylic acids, gas chromatographic analysis, irreproducibility, thermal decomposition (Russian) DOI: 10.15826/analitika.2015.19.1.001 Igor G. Zenkevich, Lilia N. Fakhretdinova St. Petersburg State University, St. Petersburg, Russian Federation" @default.
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- W1912670063 date "2015-01-01" @default.
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- W1912670063 title "FEATURES OF THE GAS CHROMATOGRAPHIC ANALYSIS OF ALIPHATIC DICARBOXYLIC ACIDS" @default.
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