Laboratory studies of sources of HONO in polluted urban atmospheres

Citation
Na. Saliba et al., Laboratory studies of sources of HONO in polluted urban atmospheres, GEOPHYS R L, 27(19), 2000, pp. 3229-3232
Citations number
43
Categorie Soggetti
Earth Sciences
Journal title
GEOPHYSICAL RESEARCH LETTERS
ISSN journal
00948276 → ACNP
Volume
27
Issue
19
Year of publication
2000
Pages
3229 - 3232
Database
ISI
SICI code
0094-8276(20001001)27:19<3229:LSOSOH>2.0.ZU;2-Z
Abstract
Laboratory studies reported here and in previous work show that the reactio n of NO(g) with surface adsorbed HNO3 may be a significant source of HONO i n polluted urban atmospheres. If these laboratory studies can be extrapolat ed to ambient conditions, this heterogeneous reaction may generate HONO to about the same extent as the hydrolysis of NO2 on surfaces, which is greate r than the heterogeneous reaction of NO, NO2 and water. It may also be invo lved in generating HONO In snowpacks, and important in reconciling the disc repancy between measured and modeled HNO3/NOx ratios in the troposphere.