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By Christian George, Barbara D’Anna, Hartmut Herrmann (auth.), V. Faye McNeill, Parisa A. Ariya (eds.)

ISBN-10: 3642412149

ISBN-13: 9783642412141

ISBN-10: 3642412157

ISBN-13: 9783642412158

Christian George, Barbara D’Anna, Hartmut Herrmann, Christian Weller, Veronica Vaida, D. J. Donaldson, Thorsten Bartels-Rausch, Markus Ammann - rising parts in Atmospheric Photochemistry. Lisa Whalley, Daniel Stone, Dwayne Heard - New Insights into the Tropospheric Oxidation of Isoprene: Combining box Measurements, Laboratory stories, Chemical Modelling and Quantum concept. Neil M. Donahue, Allen L. Robinson, Erica R. Trump, Ilona Riipinen, Jesse H. Kroll - Volatility and getting older of Atmospheric natural Aerosol. P. A. Ariya, G. Kos, R. Mortazavi, E. D. Hudson, V. Kanthasamy, N. Eltouny, J. solar, C. Wilde - Bio-Organic fabrics within the surroundings and Snow: dimension and Characterization. V. Faye McNeill, Neha Sareen, Allison N. Schwier - Surface-Active Organics in Atmospheric Aerosols.

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As indicated in (5), HONO is formed by the acid–base 40 C. George et al. reaction involving NO2À. Miet et al. [337] have suggested HONO formation in the mechanism to explain 1-nitropyrene production. The photo-stability of NO2À on the film was tested by Ammar et al. and emission of HONO and NO was indeed observed, implying reactions (5)–(6) [353]. Similar conclusions about the mechanism were also drawn by Sosedova et al. [89], who identified both direct and indirect pathways of HONO formation from exposure of phenolic and polyphenolic compounds to NO2 and light.

In either case, Bartels-Rausch et al. [291] argued that the reduction of Hg(II) to Hg(0) in ice most likely proceeds via Hg(I) as intermediate. They observed that the presence of chloride and of oxygen significantly lowers the photoreactivity of the mercury-organics mixtures in ice, whereas the presence of bromide had little influence. This observation is in line with the oxidation capacity of oxygen and of the halogens in irradiated aqueous solutions [292, 295]. This preservation of mercury in the snow might partially explain the higher mercury concentrations in halogen-rich snow on sea ice as compared to more off-shore samples [253].

They observed that the presence of chloride and of oxygen significantly lowers the photoreactivity of the mercury-organics mixtures in ice, whereas the presence of bromide had little influence. This observation is in line with the oxidation capacity of oxygen and of the halogens in irradiated aqueous solutions [292, 295]. This preservation of mercury in the snow might partially explain the higher mercury concentrations in halogen-rich snow on sea ice as compared to more off-shore samples [253].

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Atmospheric and Aerosol Chemistry by Christian George, Barbara D’Anna, Hartmut Herrmann (auth.), V. Faye McNeill, Parisa A. Ariya (eds.)


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