Abstract
Past procedures for analysis of arsenic in organic compounds depended on wet oxidation method and none used the combustion method. Thinking that the combustion held less factors for error than the wet oxidation method, analysis of arsenic was carried out by the combustion method. The sample was weighed in a quartz boat and burned in oxygen stream in the combustion tube provided with a side tube (Fig. 1). Arsenic compounds are converted into arsenic trioxide and remains as white crystals along the inner wall of the quartz funnel This boat is weighed and the value of arsenic is calculated from the difference in weight of the funnel.
This analytical procedure is quite simple, requires only a short time, and can be adopted for routine analysis. Examinations are now being made on this procedure for analysis in the presence of halogen or sulfur.
