dc.contributor |
Landbúnaðarháskóli Íslands |
dc.contributor |
Agricultural University of Iceland |
dc.contributor.author |
Urupina, Darya |
dc.contributor.author |
Lasne, Jerome |
dc.contributor.author |
romanias, manolis |
dc.contributor.author |
Thiery, Vincent |
dc.contributor.author |
Dagsson-Waldhauserova, Pavla |
dc.contributor.author |
THEVENET, Frederic |
dc.date.accessioned |
2019-11-21T13:12:25Z |
dc.date.available |
2019-11-21T13:12:25Z |
dc.date.issued |
2019-11 |
dc.identifier.citation |
Urupina, D., Lasne, J., Romanias, M. N., Thiery, V., Dagsson-Waldhauserova, P., & Thevenet, F. (2019). Uptake and surface chemistry of SO2 on natural volcanic dusts. Atmospheric Environment, 217, 116942. |
dc.identifier.issn |
1352-2310 |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/1349 |
dc.description.abstract |
V-dust (v-dust) is a highly variable source of natural particles in the atmosphere, and during the period of high volcanic activity it can provide a large surface for heterogeneous interactions with other atmospheric compounds. Icelandic v-dust was chosen as a case study due to frequency of volcanic eruptions and high aeolian activity in the area. In this study, we focus on the kinetics and mechanism of the reaction of sulfur dioxide (SO2) with natural v-dust samples under atmospheric conditions using coated wall flow tube reactor and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). Steady state uptake coefficients determined are in the range of 10−9 to 10−8 depending on the considered v-dust. Concomitantly with SO2 uptake, both sulfites and sulfates are monitored on the surface of v-dust, with sulfates being the final oxidation product, attesting of SO2 surface reaction. Surface hydroxyl groups play a crucial role in the conversion of SO2 to sulfites as evidenced from both flow tube and DRIFTS experiments. Based on these experimental results, a mechanism for SO2 interaction with different surface sites of v-dust is proposed and discussed. This study provides original insights in the kinetics of SO2 uptake under simulated atmospheric conditions and its mechanism and transformation on volcanic material. To that regards, it brings an accurate perspective on SO2 heterogeneous sinks in the atmosphere. |
dc.description.sponsorship |
The authors acknowledge Mr Vincent Gaudion and Dr Mohamad Zeineddine (SAGE, IMT Lille Douai) for their assistance in the lab. We are grateful to Mr Bruno Malet and Dr Laurent Alleman (SAGE, IMT Lille Douai) for conducting the ICP-MS experiments. This work was achieved in the frame of Labex CaPPA, funded by ANR through the PIA under contract ANR-11-LABX-0005-01, and CPER CLIMIBIO project, both funded by the Hauts-de-France Regional Council and the European Regional Development Fund (ERDF). J. Lasne acknowledges support from the Labex CaPPA and CPER CLIMIBIO projects and the Hauts-de-France Regional Council for his post-doctoral fellowship. |
dc.format.extent |
116942 |
dc.language.iso |
en |
dc.publisher |
Elsevier BV |
dc.relation.ispartofseries |
Athmosperic Environment;217 |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Atmospheric Science |
dc.subject |
Sulfur dioxide |
dc.subject |
Brennisteinsdíoxíð |
dc.subject |
Aska |
dc.subject |
Loftslag |
dc.title |
Uptake and surface chemistry of SO2 on natural volcanic dusts |
dc.type |
info:eu-repo/semantics/article |
dc.description.version |
Peer Reviewed |
dc.identifier.journal |
Atmospheric Environment |
dc.identifier.doi |
doi.org/10.1016/j.atmosenv.2019.116942 |
dc.relation.url |
https://www.sciencedirect.com/science/article/pii/S1352231019305813 |
dc.contributor.department |
Auðlinda- og umhverfisdeild (LBHÍ) |
dc.contributor.department |
Faculty of Natural Resources and Environmental Sciences (AUI) |