Measurements of nitrogen dioxide on Funen using diffusion tubes

Citation
M. Glasius et al., Measurements of nitrogen dioxide on Funen using diffusion tubes, ATMOS ENVIR, 33(8), 1999, pp. 1177-1185
Citations number
25
Categorie Soggetti
Environment/Ecology,"Earth Sciences
Journal title
ATMOSPHERIC ENVIRONMENT
ISSN journal
13522310 → ACNP
Volume
33
Issue
8
Year of publication
1999
Pages
1177 - 1185
Database
ISI
SICI code
1352-2310(199904)33:8<1177:MONDOF>2.0.ZU;2-G
Abstract
Monitoring of nitrogen dioxide (NO2) by passive sampling on the Danish isla nd Funen (Fyn) show that the concentration of nitrogen dioxide is low (2-20 ppb). The level of NO2 in rural and suburban areas is governed by imported air pollution, and elevated NO2 concentrations due to local traffic are of limited importance. These results are supported by diffusion denuder measu rements of nitric acid (HNO3) and particulate nitrate. Measurements of NO2 with chemiluminescence and diffusive passive sampling showed good agreement between the methods. The special mounting device for the diffusive sampler s used in this work seem to have reduced the turbulence at the open end of the tube. The product from the reaction between nitrogen dioxide and trieth anolamine was investigated and tentatively identified as triethanolamine N- oxide, which is in accordance with the observed 1 : 1 stoechiometry in the conversion of NO2 to nitrite ions. (C) 1999 Elsevier Science Ltd. All right s reserved.