Methode zur Bestimmung von Maleinsäurehydrazid-Rückständen im Tabak

Autor: Rastetter, Adolf, Burkart, Franz, Fischer, Kurt
Zdroj: Zeitschrift für Lebensmitteluntersuchung und -Forschung A; August 1974, Vol. 155 Issue: 5 p292-294, 3p
Abstrakt: Summary A method is described to determine the residues of maleinhydracid (10–500 ppm) in tobacco in a simple and sufficiently accurate manner. It is based on alkaline hydrolysis, quick steam-destillation by means of zinc as reduction agent and nitrogen as innert gas. The distilled hydracin is changed in a yellow coloured substance by p-Dimethyl-aminobenzaldehyd and determined spectrophotometrically.
Databáze: Supplemental Index