Kinetic experiments on the oxidation of bromide by ozone from 289-245 K.

The reaction of ozone with bromide in polar regions results in the formation of reactive bromide species with impacts on ozone budget and the oxidative capacity of the lower atmosphere. Here, we present a data investigating the temperature dependence of bromide oxidation by ozone using a coated wall flow tube reactor coated with an aqueous mixture of citric acid and sodium bromide, a proxy for sea salt aerosol in snow or the free troposphere. Thus study shows the effect of of organic species at relatively mild temperatures between the freezing point and eutectic temperature as typical for Earth's cryosphere.

• Funding information not available.

• Jacinta Edebeli, Ammann, M., and Bartels-Rausch, T. (2019). Microphysics of the aqueous bulk counters the water activity driven rate acceleration of bromide oxidation by ozone from 289–245 K. Environmental Science: Processes & Impacts, 21, 63-73, https://doi.org/10.1039/c8em00417j.
• Edebeli J., Ammann M., Bartels-Rausch T. (2019) Microphysics of the aqueous bulk counters the water activity driven rate acceleration of bromide oxidation by ozone from 289–245 K. Environ. Sci. Process. Impacts. 21(1), 63-73. doi.org/10.1039/C8EM00417J