ISOTOPIC CHROMATOGRAPHIC SPECTRAL-ANALYSIS OF INORGANIC GASES

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 admixtur es. For evaluation of the total content of the element, isotope balanc ing and conversion of all components containing this element into a mo lecular compound more suitable for chromatographic isolation and spect roscopic detection are used. High sensitivity is achieved by preconcen tration of admixtures with the simultaneous monitoring of possible dis tortions of the sample composition at all stages of analysis by means of the introduction of a rare stable isotope. The fields of applicatio n are the analysis of high-purity gases, evaluation of the total conte nts of individual elements, metrological tasks of apparatus calibratio n, and so on. The method does not need reference samples prepared from the analyzed gaseous matrices for the calibration itself.