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DOI | 10.1002/2017JD026993 |
Reactive Uptake of Sulfur Dioxide and Ozone on Volcanic Glass and Ash at Ambient Temperature | |
Maters, Elena C.1,2; Delmelle, Pierre1; Rossi, Michel J.3; Ayris, Paul M.4 | |
2017-09-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; France; Switzerland; Germany |
英文摘要 | The atmospheric impacts of volcanic ash from explosive eruptions are rarely considered alongside those of volcanogenic gases/aerosols. While airborne particles provide solid surfaces for chemical reactions with trace gases in the atmosphere, the reactivity of airborne ash has seldom been investigated. Here we determine the total uptake capacity (Ni-M) and initial uptake coefficient (gamma(M)) for sulfur dioxide (SO2) and ozone (O-3) on a compositional array of volcanic ash and glass powders at similar to 25 degrees C in a Knudsen flow reactor. The measured ranges of Ni-SO2 and gamma(SO2) (10(11)-10(13) molecules cm(-2) and 10(-3)-10(-2)) and Ni-O3 and gamma(O3) (10(12)-10(13) molecules cm(-2) and 10(-3)-10(-2)) are comparable to values reported for mineral dust. Differences in ash and glass reactivity toward SO2 and O-3 may relate to varying abundances of, respectively, basic and reducing sites on these materials. The typically lower SO2 and O-3 uptake on ash compared to glass likely results from prior exposure of ash surfaces to acidic and oxidizing conditions within the volcanic eruption plume/cloud. While sequential uptake experiments overall suggest that these gases do not compete for reactive surface sites, SO2 uptake forming adsorbed S(IV) species may enhance the capacity for subsequent O-3 uptake via redox reaction forming adsorbed S(VI) species. Our findings imply that ash emissions may represent a hitherto neglected sink for atmospheric SO2 and O-3. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416388000030 |
WOS关键词 | MANGANESE OXIDE CATALYST ; MINERAL DUST ; HETEROGENEOUS REACTIONS ; KNUDSEN-CELL ; ATMOSPHERIC CHEMISTRY ; FUNCTIONAL-GROUPS ; GAMMA-ALUMINA ; DIESEL-ENGINE ; SAHARAN DUST ; METAL-OXIDES |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32777 |
专题 | 气候变化 |
作者单位 | 1.Catholic Univ Louvain, Environm Sci Earth & Life Inst, Louvain La Neuve, Belgium; 2.Univ Littoral Cote dOpale, Lab Physicochim Atmosphere, Dunkerque, France; 3.Paul Scherrer Inst, Lab Atmospher Chem, Villigen, Switzerland; 4.Ludwig Maximilian Univ Munich, Dept Earth & Environm Sci, Munich, Germany |
推荐引用方式 GB/T 7714 | Maters, Elena C.,Delmelle, Pierre,Rossi, Michel J.,et al. Reactive Uptake of Sulfur Dioxide and Ozone on Volcanic Glass and Ash at Ambient Temperature[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(18). |
APA | Maters, Elena C.,Delmelle, Pierre,Rossi, Michel J.,&Ayris, Paul M..(2017).Reactive Uptake of Sulfur Dioxide and Ozone on Volcanic Glass and Ash at Ambient Temperature.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(18). |
MLA | Maters, Elena C.,et al."Reactive Uptake of Sulfur Dioxide and Ozone on Volcanic Glass and Ash at Ambient Temperature".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.18(2017). |
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