title: Tentative method for calibration of continuous colorimetric analyzers for atmospheric nitrogen dioxide and oxide oxide 42602-02-72T; 42601-02-72T.
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D001391:Azo Compounds; D003124:Colorimetry; D007202:Indicators and Reagents; D008433:Mathematics; D008722:Methods; D009569:Nitric Oxide / Q000032:analysis*; D009585:Nitrogen Dioxide / Q000032:analysis*; D010084:Oxidation-Reduction; D013048:Specimen Handling; D013053:Spectrophotometry
chemical_list: D001391:Azo Compounds; D007202:Indicators and Reagents; D009569:Nitric Oxide; D009585:Nitrogen Dioxide