Cr speciation changes in the presence of ozone and reactive oxygen species at low relative humidity
| Autor: | Lin Lin, Philip K. Hopke, Mehdi Amouei Torkmahalleh, Thomas M. Holsen, Don H. Rasmussen |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Atmospheric Science Reactive oxygen species Ozone media_common.quotation_subject Inorganic chemistry chemistry.chemical_element Filter (aquarium) Atmosphere Speciation chemistry.chemical_compound Chromium chemistry Environmental chemistry Relative humidity General Environmental Science media_common |
| Zdroj: | Atmospheric Environment. 71:92-94 |
| ISSN: | 1352-2310 |
| Popis: | There is limited understanding of chromium chemistry in the atmosphere as well as after particles containing chromium are captured on filters during extended sampling intervals (24 h). Thus, experiments were conducted to investigate the role of ozone (4 ppm) and particle-bound reactive oxygen species (ROS) (>700 nM of equivalent H2O2) on chromium speciation. For Cr(VI) collected on a filter, reduction to Cr(III) at 24 °C, pH 4 and 10% RH decreased from 48 ± 3% to 26 ± 3% (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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