DETERMINATION OF SULFIDE AS HYDROGEN-SULFIDE IN WATER AND SLUDGE SAMPLES BY GAS-PHASE MOLECULAR AS

A molecular absorption method using a sharp-tine irradiation source was developed for the determination of sulfide in water and sludge samples. First, sulfide was transformed into hydrogen sulfide and the absorption of H2S was measured at 196.0 nm using the selenium atomic line. The interference of some metallic elements was tested by adding them to the sulfide-containing solutions. The method was tested measuring wastewater samples with known amounts of sulfide. The results were in good agreement with the amounts of sulfide added.