Abstract
The possibility of the direct determination of methyl alkyl ketones with four to eight carbon atoms in the alkyl chain and heterocyclic compounds (2-acetylpyridine, 2,3-diethylpyrazine, and 2-acetylthiophene) in aqueous solutions at a level ofn × 10-3 vol % by gas chromatography with the injection of samples into an open tubular column with carrier gas flow splitting is studied. A significant effect of the calibration plot relating the concentration and the relative area of a gas-chromatographic peak on the results of determination is demonstrated. Factors that make it possible to optimize the calibration process, increase the rapidness of analysis, and decrease the relative error in the determination of organic compounds in water to 3% are discussed. Model mixtures of compounds were analyzed on a open tubular column with the nonpolar OV-101/KF stationary phase, which is stable in work with aqueous solutions for three years
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