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Abstract
The Schütze method for the direct determination of oxygen in organic compounds has been modified by a number of investigators. It has not always been clear whether a particular modification offers any advantage. Several of these modifications have, therefore, been examined in turn and compared. In the course of this work the gases obtained by pyrolysis have been analysed in a mass spectrometer. As a result of this examination it is recommended that the organic oxygen-containing compound be pyrolysed over platinised carbon heated at 900°, that both reduced copper and soda asbestos be used to remove interfering gases, and that the determination be completed gravimetrically after conversion of carbon monoxide to carbon dioxide with Schütze reagent at room temperature. Alternative methods of determining carbon dioxide are discussed.
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