Abstract
A new design of a sorption device for the preconcentration of impurities is proposed, and its characteristics are studied. The device is a flat microconcentrator that operates based on the principle of solid-phase extraction and is intended for the subsequent gas-chromatographic determination without cryofocusing. The new device was tested in the analysis of model vapor—gas mixtures of benzene, toluene, ethylbenzene, and o-xylene. The proposed device with adsorbents such as Tenax GC and polydiphenylphthalide-1 under the conditions of exhaustive extraction reliably determines the simplest aromatic hydrocarbons in vapor—gas mixtures at a level of ~0.01 mg/m3 (lower than MPC); the precision of the results is characterized by a relative standard deviation of 14% or better.
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Translated from Zhurnal Analiticheskoi Khimii, Vol. 60, No. 1, 2005, pp. 11–16.
Original Russian Text Copyright © 2005 by Makarov, Stolyarov, Berezkin, Bychinskaya, Zenkevich.
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Makarov, E.D., Stolyarov, B.V., Berezkin, V.G. et al. New design of a sorption device for the preconcentration of organic impurities and their subsequent determination by gas chromatography. J Anal Chem 60, 6–11 (2005). https://doi.org/10.1007/s10809-005-0031-z
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DOI: https://doi.org/10.1007/s10809-005-0031-z