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Evaluation of a PTV injector for quantitative analysis of volatile compounds at low concentrations

1989; Wiley; Volume: 12; Issue: 7 Linguagem: Inglês

10.1002/jhrc.1240120704

1521-4168

Marta Herráiz, Guillermo Reglero, Tomás Herraiz,

Analytical Chemistry and Sensors

Abstract The performance of a PTV injector operated in the solvent venting mode with Tenax in the glass insert was evaluated with synthetic mixtures containing 5 to 50 ng of n ‐alkanes, ethyl esters, n ‐alcohols, and carboxylic acids. The influence of the sampled amount, the injected volume, and the nature of the solvent on accuracy and precision were studied. Coefficients of variation of relative (normalized) peak areas and absolute peak area ratios of each compound to the standard are of the order of 5 %.