title: [Photometric method for determining an ammonium salts aerosol in the atmosphere].
mesh_terms: D000336:Aerosols; D000388:Air / Q000032:analysis*; D010783:Photometry / Q000379:methods*; D000644:Quaternary Ammonium Compounds / Q000032:analysis*; D012643:Selenium / Q000032:analysis
chemical_list: D000336:Aerosols; D000644:Quaternary Ammonium Compounds; D012643:Selenium
vernacular_title: Fotometricheskiĭ metod opredeleniia aérozolia soleĭ ammoniia v atmosfernom vozdukhe