Abstract
The efficiencies of various carbon sorbents in the preconcentration of volatile organic substances from a stream of humid air for their subsequent gas-chromatographic determination are compared. A hybrid procedure for rapid analysis including the sorption preconcentration of analytes on a selected carbon–fluoroplastic composite sorbent and their one-stage thermal desorption in the injector of a chromatograph with a capillary column and a flame-ionization detector is proposed. This procedure makes it possible to determine lower alcohols and ketones in air saturated with water vapor for 5–10 min with determination limits at a level of several μg/m3.
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Funding
This work was supported by the Russian Science Foundation (grant no. 16-13-10117) and performed with the use of the equipment of the Chemistry Resource Education Center at the St. Petersburg State University.
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Translated by V. Makhlyarchuk
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Rodinkov, O.V., Vagner, E.A., Bugaichenko, A.S. et al. Comparison of the Efficiencies of Carbon Sorbents for the Preconcentration of Highly Volatile Organic Substances from Wet Gas Atmospheres for the Subsequent Gas-Chromatographic Determination. J Anal Chem 74, 877–882 (2019). https://doi.org/10.1134/S1061934819090089
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DOI: https://doi.org/10.1134/S1061934819090089