HONO Budget and Its Role in Nitrate Formation in the Rural North China Plain.
Journal
Environmental science & technology
ISSN: 1520-5851
Titre abrégé: Environ Sci Technol
Pays: United States
ID NLM: 0213155
Informations de publication
Date de publication:
15 09 2020
15 09 2020
Historique:
pubmed:
19
8
2020
medline:
15
12
2020
entrez:
19
8
2020
Statut:
ppublish
Résumé
Nitrous acid (HONO) is a major precursor of tropospheric hydroxyl radical (OH) that accelerates the formation of secondary pollutants. The HONO sources, however, are not well understood, especially in polluted areas. Based on a comprehensive winter field campaign conducted at a rural site of the North China Plain, a box model (MCM v3.3.1) was used to simulate the daytime HONO budget and nitrate formation. We found that HONO photolysis acted as the dominant source for primary OH with a contribution of more than 92%. The observed daytime HONO could be well explained by the known sources in the model. The heterogeneous conversion of NO
Identifiants
pubmed: 32808764
doi: 10.1021/acs.est.0c01832
doi:
Substances chimiques
Aerosols
0
Nitrates
0
Hydroxyl Radical
3352-57-6
Nitrous Acid
T2I5UM75DN
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM