Study of gas chromatography-microwave-induced plasma atomic emission spectrometry. Part 1. Effect of the structure of a compound on the determination of its empirical formula

Abstract

The effect of the structure of a compound on the determination of its empirical formula was investigated with alkenes, aromatic hydrocarbons, polynuclear aromatic hydrocarbons, mixtures of alkanes and alkenes, mixtures of alkenes and polynuclear aromatic hydrocarbons, chlorohydrocarbons and bromohydrocarbons as test samples. For homologous hydrocarbons, any member can be used as a reference compound and its structure has no effect on the determination of empirical formulae. For a mixture containing nonhomologues, such as alkenes and polynuclear aromatic hydrocarbons, the structure of the reference compound used has a significant effect on the result of the determination of empirical formulae. For halogenated hydrocarbons, it is necessary for the reference compound to have a similar structure (similar carbon-hydrogen skeleton and similar number of halogen atoms) to those of the test compounds.