The determination of nitric oxide and nitrogen dioxide in flue gases. I. Sampling and colorimetric determination.
D000397:Air Pollution / Q000032:analysis*; D003124:Colorimetry; D008722:Methods; D009569:Nitric Oxide / Q000032:analysis*; D009585:Nitrogen Dioxide / Q000032:analysis*
D009569:Nitric Oxide; D009585:Nitrogen Dioxide