title: Photometrische ceriambestimmung in gusseisen and legierten stählen mit hilfe von tetron.
abstract: It is proposed that traces of cerium in cast iron and high-alloy steels can be determined by oxidising tetron (N,N'-tetramethyl-o-tolidine) with cerium(IV) to yield an intensely orange-yellow product with = 25,300. Cerium can be determined in the presence of a 200-fold excess of Mn, Ti, Cr, Ni, Co, W, Mo, V, etc. The cerium contents of some steels have been determined and the results statistically evaluated.
authors.affiliation: Institute für allgemeine und anorganische Chemie der Bulgarischen Akademie der Wissenschaften Chemische Fakultät der Universität Sofia, Bulgaria.
authors.forename: N
authors.initials: N
authors.lastname: Jordanov
authors.forename: N
authors.initials: N
authors.lastname: Antonova
authors.forename: C
authors.initials: C
authors.lastname: Daiev