Abstract
A new method of microdetermination of halogens and sulfur in organic compounds by combustion tube method was examined. It was found that tungsten trioxide among metal oxides was the most appropriate catalyst for oxidation of samples and air as carrier gas was suitable for the analysis. And also, direct introduction of few drops of water into the combustion system was found to be very effective for the analysis. Titration of halogens and sulfur in the combustion product were performed by argentimetric titration at pH 1 with dithizone indicator and by barium perchlorate titration at pH 2 using dinitrosulfonazo-III as indicator, respectively. Whole analysis procedure can be carried out only within 15 minutes.
