AN IMPROVED METHOD FOR CALCULATING THE EL EMENTAL COMPOSITION APPLIEDTO A SELF-INTEGRATED CARBON, HYDROGEN AND NITROGEN ANALYZER

A carbon, hydrogen and nitrogen microanalyzer equipped with a self-int egrated measuring system features the transportation of a combustion g as into a cylindrical pump having a reproducible inner volume and the collection of three signals of water, carbon dioxide and nitrogen when the pump slowly pushes out the gas towards a series of three differen tial thermal-conductivity cells. However, these signal intensities are not directly proportional to the true concentration of the respective components in the pump, because of the coexistence of foreign compone nts other than the object. A correction of the signal intensity is the refore needed to obtain accurate analytical results. The conventional correction method gave rise to a minute analytical error, since the ca lculation involved a process to roughly estimate the quantities of the three elements in the sample being analyzed. An algebraic modificatio n on simultaneous equations representing quantities of the three eleme nts has resulted in the discovery of new formulae of simultaneous equa tions by which precisely corrected analytical results can be directly calculated, thus eliminating the need for a rough estimation of the qu antities of the elements.