METHOD FOR ANALYSING HUMAN BREATH USING AN ISOTOPIC GAS ANALYZER

摘要

In an isotopic gas analyzer, a gas injector ( 21 ) is provided for pressurizing a gas specimen in cells ( 11 a, 11 b). The pressurization of the gas specimen virtually produces the same effect as increasing the concentration of carbon dioxide in the gas specimen, thereby improving an S/N ratio for the analysis and hence data reproducibility.