English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The uptake of SO 2  on  α -Fe 2 O 3  and Saharan dust has been studied in the temperature range 250 K to 600 K using a Knudsen cell reactor. SO 2  adsorbs readily and irreversibly on both mineral oxides with a mean initial uptake coefficient of  γ  ini  = (5.9±0.3) · 10 −2  on dry surfaces, independent of the surface temperature. In the presence of adsorbed water the initial uptake coefficientsat T = 300 K are slightly higher with values of  γ  ini  = (8.4±0.2) · 10 −2  for Fe 2 O 3  and  γ  ini  = (7.3±0.4) · 10 −2  for mineral dust. The uptake of SO 2  is time-dependent and influenced by diffusion into the bulk of the sample at longer timescales. The adsorption capacity hasbeen determined to be (3.0±0.4) · 10 18  molecules g −1  for Fe 2 O 3  and (2.6±1) · 10 19  molecules g −1  for mineral dust. Sulphite has been identified as the primary reaction product on both surfaces which is readily oxidizedto sulphate under atmospheric conditions. Oxidation of sulphite to sulphate only takes place at elevated temperature. Fromthese results a mechanism for the uptake of SO 2  onto mineral oxides is inferred, which has been used to compare the experimental concentration-time-profiles with simulatedones.

The Uptake of SO 2 on α -Fe 2 O 3 and Mineral Dust Surfaces in the Temperature Range 250 K to 600 K