Bestimmung von Sauerstoff und Stickstoff sowie Erfassung primärer Oxydationsprodukte in Ölen,Fetten und Emulsionen auf physikalisch-chemischem Wege I: Methodik

Determination of Oxygen and Nitrogen as well as the Detection of Primary Oxydation Products in Oils, Fats and Emulsions by Physico-chemical Methods A displacement method for the determination of oxygen and nitrogen in oils, fats and emulsions is reported. The method also serves to calibrate the described oxygen determination procedures by Tödt and by Clark. A procedure has been developed with the help of Clark-cell, with which the oxygen content of oils, fats and emulsions can be determined and continuously registered. A polarographic procedure for the determination of fatty hydroperoxides is also described. It is shown with the help of an autoxidation experiment, that the absorbed oxygen is mostly used up in the formation of hydroperoxides.