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Detection of nitrous acid in the atmosphere by differential optical absorption
Author(s) -
Perner D.,
Platt U.
Publication year - 1979
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl006i012p00917
Subject(s) - sunrise , atmosphere (unit) , absorption (acoustics) , nitrous acid , mixing ratio , atmospheric chemistry , environmental science , atmospheric sciences , photochemistry , analytical chemistry (journal) , chemistry , environmental chemistry , meteorology , optics , ozone , physics , inorganic chemistry
HNO 2 was investigated by long path optical absorption at three sites in Western Europe. It vas definitely identified and measured in moderately polluted air at Jülich. Mixing ratios as high as 0.8 ppb were observed before sunrise. After sunrise the HNO 2 is photolyzed and considerable amounts of OH are produced. The formation of HNO 2 is unclear and possible reactions are discussed.