ASTM International - ASTM UOP649-74

Total Oxygen in Organic Materials by Pyrolysis-Gas Chromatographic Technique

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Organization: ASTM International
Publication Date: 29 July 2002
Status: historical
Page Count: 10
scope:

This method is suitable for the analysis of virtually all organic materials which decompose below 1000°C. This includes not only hydrocarbons, but also organic materials which contain nitrogen, sulfur, and/or halogens. Dissolved molecular oxygen, organic oxygen, and the oxygen of water, carbon dioxide and carbon monoxide are included in the total oxygen. The oxygen of certain metal oxides, such as ferric oxide (Fe2O3), is reducible but others, such as alumina (Al2O3), do not react and are not determinable by this method. Therefore metal oxides are an interference.

The total oxygen content can be determined in the entire range from 5 ppm to several percent.

Samples containing fluorine may yield high results because the fluorine attacks the quartz pyrolysis tube, but after the pyrolysis tube has developed a carbon "skin" the data indicate that fluoride does not constitute an interference at levels below 5% F.

Document History

January 1, 2010
Total Oxygen in Solid, Semi-solid, and High Boiling Point Liquid Hydrocarbons by Pyrolysis
This method is for determining total oxygen in solid, semi-solid, and high boiling point liquid hydrocarbons at concentrations ranging from approximately 0.1 to 50 mass-%. Sampling methods are...
ASTM UOP649-74
July 29, 2002
Total Oxygen in Organic Materials by Pyrolysis-Gas Chromatographic Technique
This method is suitable for the analysis of virtually all organic materials which decompose below 1000°C. This includes not only hydrocarbons, but also organic materials which contain nitrogen,...
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