| Автор | Abbatt, Jonathan P. D. |
| Дата выпуска | 1995 |
| dc.description | The time‐dependent uptakes of HBr and HCl by supercooled solutions of sulfuric acid have been studied using a low‐temperature flow tube coupled to a mass spectrometer. From these experiments, typical values for the quantity H<sup>*</sup>D<sup>1/2</sup> (where H<sup>*</sup> is the effective Henry's law constant and D is the liquid phase diffusion coefficient) have been measured to be 1100 and 3.3 (M/atm)(cm<sup>2</sup>/s)<sup>1/2</sup> for HBr and HCl, respectively, on 59.6 wt% sulfuric acid at 210 K. By estimating values for the liquid phase diffusion coefficient, these measurements indicate that HBr is over 2 orders of magnitude more soluble in atmospheric sulfate aerosols than HCl. Similarly, HD<sup>1/2</sup> for HOBr on 69.8 wt% sulfuric acid at 228 K has been measured to be 20 (M/atm)(cm<sup>2</sup>/s)<sup>1/2</sup>, implying that HOBr, too, is highly soluble in sulfuric acid solutions. By exposing sulfuric acid films simultaneously to HOBr and either HCl or HBr, the liquid phase reactions HOBr + HCl → BrCl + H<sub>2</sub>O and HOBr + HBr → Br<sub>2</sub> + H<sub>2</sub>O have been studied. The results indicate that the HOBr/HCl heterogeneous reaction may play an important role in the activation of stratospheric chlorine under volcanic aerosol conditions. |
| Формат | application.pdf |
| Копирайт | Copyright 1995 by the American Geophysical Union. |
| Тема | ATMOSPHERIC COMPOSITION AND STRUCTURE |
| Тема | Middle atmosphere: composition and chemistry |
| Тема | Troposphere: composition and chemistry |
| Тема | Cloud physics and chemistry |
| Тема | Aerosols and particles |
| Тема | Pollution: urban and regional |
| Тема | OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL |
| Тема | Aerosols |
| Тема | PALEOCEANOGRAPHY |
| Тема | Aerosols |
| Название | Interactions of HBr, HCl, and HOBr with supercooled sulfuric acid solutions of stratospheric composition |
| Тип | article |
| DOI | 10.1029/95JD01367 |
| Electronic ISSN | 2156-2202 |
| Print ISSN | 0148-0227 |
| Журнал | Journal of Geophysical Research: Atmospheres |
| Том | 100 |
| Первая страница | 14009 |
| Последняя страница | 14017 |
| Выпуск | D7 |
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