title: Tentative method of analysis for sulfur trioxide and sulfur dioxide emissions from stack gases--colorimetric procedure.
mesh_terms: D000393:Air Pollutants / Q000032:analysis; D003124:Colorimetry; D005740:Gases / Q000032:analysis; D008433:Mathematics; D008722:Methods; D013458:Sulfur Dioxide / Q000032:analysis*; D013461:Sulfur Oxides / Q000032:analysis*
chemical_list: D000393:Air Pollutants; D005740:Gases; D013461:Sulfur Oxides; D013458:Sulfur Dioxide