title: Microdetermination of carbon and hydrogen in triterpenoids.
abstract: 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.
authors.affiliation: National Research Centre Dokki, Cairo, U.A.R.
authors.forename: Y A
authors.initials: YA
authors.lastname: Gawargious
authors.forename: A B
authors.initials: AB
authors.lastname: Farag