The possibilities of the hyphenated isotopic chromatographic spectral method (ICSM) of inorganic gas analysis are considered. The technique allows detection of both the individual element and molecular admixtures. For evaluation of the total content of the element, isotope balancing and conversion of all components containing this element into a molecular compound more suitable for chromatographic isolation and spectroscopic detection are used. High sensitivity is achieved by preconcentration of admixtures with the simultaneous monitoring of possible distortions of the sample composition at all stages of analysis by means of the introduction of a rare stable isotope. The fields of application are the analysis of high-purity gases, evaluation of the total contents of individual elements, metrological tasks of apparatus calibration, and so on. The method does not need reference samples prepared from the analyzed gaseous matrices for the calibration itself.
Valery N. Funtov, Valeriy M. Nemets, Arcadiy A. Petrov, and Anatoliy A. Soloviov, "Isotopic Chromatographic Spectral Analysis of Inorganic Gases," Appl. Spectrosc. 48, 884-890 (1994)
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