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On-line purification and carbon-13 isotopic analysis of carbon dioxide in breath: evaluation of on-line gas chromatography-isotope ratio mass spectrometry

✍ Scribed by R. Guilluy; F. Billion-Rey; C. Pachiaudi; S. Normand; J.P. Riou; E.J. Jumeau; J.L. Brazier

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
831 KB
Volume
259
Category
Article
ISSN
0003-2670

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✦ Synopsis

An on-hne gas chromatograpluc-isotope ratlo mass spectrometrlc (IRMS) device consisting of a gas chromatograph, a column swltchmg system, a continuous-flow dual Inlet and an isotope ratlo mass spectrometer IS described This device has been found s&able for the simultaneous on-hne punficatlon of expired breath CO, and the determmatlon of Its rsotoplc cornposItIon The quahty of the analytical data obtamed vahdated the clm& use of the method to perform breath tests at low enruzhment levels and from small samples The whole procedure 1s rehable, simple and efficient It IS capable of analysmg breath samples down to 50 gl wthm 150 s Its high rehablhty and advantages over the conventional IRMS techmque are &cussed

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