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Determination of the Elemental Composition of Hydrocarbon Mixtures by Gas Chromatography with Atomic Emission Detection: Increasing the Accuracy

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Abstract

In this work, the accuracy of the ratio of the numbers of carbon and hydrogen atoms (n C/n H) determined in the molecules of the components of aliphatic hydrocarbon mixtures by gas chromatography with atomic emission detection (GC-AED) is studied as a function of the oxygen concentration in helium. It is shown that the highest accuracy is achieved at about 9% of oxygen, which is the highest oxygen concentration possible for the Agilent model G2350A GC-AED device. At the standard oxygen concentration (about 1.5%) recommended by the manufacturer, the accuracy of the n C/n H ratios was five to ten times lower. It is shown that improving the accuracy of the n C/n H ratios at the maximum oxygen concentration in plasma is followed by an increase in the detection limit approximately by an order of magnitude.

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Authors and Affiliations

  1. Department of Chemistry, Moscow State University, Vorob'evy gory, Moscow, 119992, Russia

    E. S. Chernetsova, A. I. Revelskii & I. A. Revelskii

  2. US Army Edgewood Laboratories, Aberdeen Proving Ground, Maryland, USA

    D. Durst

Authors
  1. E. S. Chernetsova
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  2. A. I. Revelskii
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  3. D. Durst
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  4. I. A. Revelskii
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Translated from Zhurnal Analiticheskoi Khimii, Vol. 60, No. 9, 2005, pp. 963–968.

Original Russian Text Copyright © 2005 by Chernetsova, A. Revelskii, Durst, I. Revelskii.

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Chernetsova, E.S., Revelskii, A.I., Durst, D. et al. Determination of the Elemental Composition of Hydrocarbon Mixtures by Gas Chromatography with Atomic Emission Detection: Increasing the Accuracy. J Anal Chem 60, 855–859 (2005). https://doi.org/10.1007/s10809-005-0195-6

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  • DOI: https://doi.org/10.1007/s10809-005-0195-6

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