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Comparison of passive and active sampling methods for the determination of nitrogen dioxide in urban air

✍ Scribed by Oddvar Røyset


Publisher
Springer
Year
1998
Tongue
English
Weight
42 KB
Volume
360
Category
Article
ISSN
1618-2650

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A novel method has been developed for the photometric determination of nitrogen oxides (NO,; NO and NO, gases). The sample .gas is shaken with an NaOH-alkaline H20, solution in a container so that all the NO, is converted to the NO; form. After decomposition of the H,O, by heating, the colour is dev