Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Methods, fluxes and sources of gas phase alkyl nitrates in the coastal air
Dirtu, A.C.; Buczynska, A.J.; Godoi, L; Favoreto, R.; Bencs, L.; Potgieter-Vermaak, S; Godoi, M; Van Grieken, R.; Van Vaeck, L. (2014). Methods, fluxes and sources of gas phase alkyl nitrates in the coastal air. Environ. Monit. Assess. 186(10): 6445-6457. https://dx.doi.org/10.1007/s10661-014-3866-7
In: Environmental Monitoring and Assessment. Kluwer: Dordrecht. ISSN 0167-6369; e-ISSN 1573-2959
|  |
| Trefwoord |
|
| Author keywords |
Organic nitrates; N-nutrients; High-volume air sampler; GC-ITMS;Breakthrough volume; Source identification |
| Auteurs | | Top |
- Dirtu, A.C.
- Buczynska, A.J.
- Godoi, L
|
- Favoreto, R.
- Bencs, L.
- Potgieter-Vermaak, S
|
- Godoi, M
- Van Grieken, R.
- Van Vaeck, L.
|
| Abstract |
The daily and seasonal atmospheric concentrations, deposition fluxes and emission sources of a few C3-C9 gaseous alkyl nitrates (ANs) at the Belgian coast (De Haan) on the Southern North Sea were determined. An adapted sampler design for low- and high-volume air-sampling, optimized sample extraction and clean-up, as well as identification and quantification of ANs in air samples by means of gas chromatography mass spectrometry, are reported. The total concentrations of ANs ranged from 0.03 to 85 pptv and consisted primarily of the nitro-butane and nitro-pentane isomers. Air mass backward trajectories were calculated by the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model to determine the influence of main air masses on AN levels in the air. The shorter chain ANs have been the most abundant in the Atlantic/Channel/UK air masses, while longer chain ANs prevailed in continental air. The overall mean N fluxes of the ANs were slightly higher for summer than those for winter-spring, although their contributions to the total nitrogen flux were low. High correlations between AN and HNO2 levels were observed during winter/spring. During summer, the shorter chain ANs correlated well with precipitation. Source apportionment by means of principal component analysis indicated that most of the gas phase ANs could be attributed to traffic/combustion, secondary photochemical formation and biomass burning, although marine sources may also have been present and a contributing factor. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
