title: [Methods for the determination of vitamins by means of HPLC. IV. Determination of vitamin K3 in vitamin premixes and mineral supplements (author's transl)].
abstract: A method is described for rapid determination of vitamin K3 (menadione) in vitamin premixes and mineral supplements. The menadione is extracted in the form of the bisulphite compound. After conversion into menadione the vitamin is taken up in n-hexane and is determined by HPLC without further clean-up.
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods; D014812:Vitamin K / Q000032:analysis*; D014815:Vitamins / Q000032:analysis
chemical_list: D014815:Vitamins; D014812:Vitamin K
vernacular_title: Methoden zur Bestimmung von Vitaminen mittels Hochleistungsflüssigkeitschromatographie. IV. Bestimmung von Vitamin K3 in Vitaminvormischungen und Mineralfuttermitteln.