title: Development and optimization of twenty-four hour manual methods for the collection and colorimetric analysis of atmospheric NO2.
mesh_terms: D000397:Air Pollution / Q000032:analysis*; D003124:Colorimetry; D004355:Drug Stability; D005069:Evaluation Studies as Topic; D007202:Indicators and Reagents; D008433:Mathematics; D008722:Methods; D008832:Microchemistry; D009573:Nitrites; D009585:Nitrogen Dioxide / Q000032:analysis*; D012044:Regression Analysis; D013997:Time Factors
chemical_list: D007202:Indicators and Reagents; D009573:Nitrites; D009585:Nitrogen Dioxide