Project information
Enviromental consequences of photochemical processes in ice and snow
- Project Identification
- GA205/05/0819
- Project Period
- 1/2005 - 12/2007
- Investor / Pogramme / Project type
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Czech Science Foundation
- Standard Projects
- MU Faculty or unit
- Faculty of Science
- Keywords
- Photochemistry, enviromental, ice, snow, pollutants
The project seeks to explore and expand the current knowledge about the distribution, accumulation, and chemical/photochemical transformations of persistent, bioaccumulative, and toxic compounds (PBTs) in water ice or snow, especially in the connectionto polar regions and atmospheric cloud particles. We already demonstrated that natural ice might be natural reaction medium for photochemical transformations by laboratory studies and this project should extend our knowledge about natural snow and ice.The planned laboratory experiments with ice contaminated with inorganic salts (nitrates, bromides) and ice with very low concentrations of organic pollutants will be a preparation for the field experiments. Here we plan to monitor concentrations oforganic po llutants in snow in the region of Czech Republic as well as consequences of sun-irradiated samples.
Publications
Total number of publications: 7
2007
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An overview of snow photochemistry: evidence, mechanisms and impacts
Atmospheric Chemistry and Physics Discussions, year: 2007, volume: 7, edition: 2
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Interactions of organic molecules at grain boundaries in ice: A solvatochromic analysis
Journal of Photochemistry and Photobiology A: Chemistry, year: 2007, volume: 187, edition: 2-3
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Photochemical degradation of PCBs in snow.
Environmental Science & Technology, year: 2007, volume: 41, edition: 41
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Photochemically induced nitration and hydroxylation of organic aromatic compounds in the presence of nitrate or nitrite in ice.
Journal of Photochemistry and Photobiology A: Chemistry, year: 2007, volume: 187, edition: 187
2006
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Enhanced Protonation of Cresol Red in Acidic Aqueous Solutions Caused by Freezing
Journal of Physical Chemistry B, year: 2006, volume: 110, edition: 3
2005
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Aggregation of Methylene Blue in Frozen Aqueous Solutions Studied by Absorption Spectroscopy
Journal of Physical Chemistry A, year: 2005, volume: 109, edition: 30
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Photodecarbonylation of Dibenzyl Ketones and Trapping of Radical Intermediates by Copper(II) Chloride in Frozen Aqueous Solutions
Journal of Physical Chemistry B, year: 2005, volume: 109, edition: 19