Semiquantitative determination of chlorides in water with chlorine gas extraction
A sensitive and selective method for semi-quantitative determination of chloride in water has been developed. It is based on the oxidation of hydrogen peroxide in sulfuric acid, gas extraction of the produced chlorine and its determination by scale of standards with the use of reactive indicator paper impregnated with solutions of tetramethylammonium iodide and starch. The range for concentrations is 50-1600 mg/dm3. A new method for binary testing of chlorides in natural waters has been suggested.