Abstract
Selective Oxidation Surface Analysis (SOSA) studies were made on (a) metal surfaces containing high molecular weight carbonaceous impurities (i.e. greases, oils) and (b) mineral particles containing adsorbed “surfactant collectors”. The principle of the technique consists of heating the sample in a stream of oxygen. The surface carbon species are selectively oxidized over characteristic temperature ranges and the effluent gas fed over a catalyst. The resulting carbon dioxide was continuously analyzed by an I.R. detection system. The method was shown to capable of differentiating and quantifying the various carbonaceous compounds. SOSA could prove useful in the mineral and metallurgical industries.
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