Continuous-flow molecular emission cavity analysis for organic sulphur compounds by alkaline hydrolysis

Alkaline hydrolysis of various organic sulphur compounds (thioacetamide, thiosemicarbazide, thiodiacetic acid and dithiooxamide) in a continuous-flow analyzer produces sulphide which can be removed from the solution after acidification. Hydrogen sulphide evolved is measured by molecular emission cavity analysis. Samples can be analyzed at a rate of 30 h^?1 with a relative error of 1–2%.