title: Absorptiometric determination of trace amounts of sulphide ion in water.
mesh_terms: D000042:Absorption; D001322:Autoanalysis; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000032:analysis; D010084:Oxidation-Reduction; D013440:Sulfides / Q000032:analysis*; D014131:Trace Elements / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000032:analysis*
chemical_list: D013440:Sulfides; D014131:Trace Elements; D007501:Iron