title: Studies on the removal of sulfur dioxide from hot flue gases as a measure to prevent air pollution. IV. Recovery of flue gas sulfur as ammonium phosphate.
mesh_terms: D000397:Air Pollution / Q000517:prevention & control*; D005579:Fossil Fuels; D005740:Gases; D010710:Phosphates / Q000302:isolation & purification; D000644:Quaternary Ammonium Compounds / Q000302:isolation & purification; D013458:Sulfur Dioxide / Q000302:isolation & purification*
chemical_list: D005579:Fossil Fuels; D005740:Gases; D010710:Phosphates; D000644:Quaternary Ammonium Compounds; D013458:Sulfur Dioxide