Microdetermination of carbon and hydrogen in triterpenoids

For microdetermination of carbon and hydrogen in triterpenoids, the Vecera, Korshun and Belcher-Ingram rapid methods need modification. In the first method the Co(3)O(4) is activated with 1% NiO, in the second two silica spirals are introduced into the combustion tube, and in the third the sample is covered with Co(3)O(4) powder.