Aggregation of Compounds on Ice Surfaces Studied by Luminescence
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F10%3A00043630" target="_blank" >RIV/00216224:14310/10:00043630 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Aggregation of Compounds on Ice Surfaces Studied by Luminescence
Original language description
Pollutants of a natural or anthropogenic origin can be found on the surfaces of ice and snow. Most of the compounds are expelled from the bulk to the ice surface upon freezing causing substantial increase in their local concentrations. Thermal and especially photochemical reactions cause formation of various cross products of high toxicity. We have a long standing interest in the spectroscopic characterization of the ice contaminants and the ice surface molecules. In order to approach lower concentrations corresponding to the natural conditions we decided to use optical spectroscopy to measure luminescence of pyrenetetrasulfonate ion. It is a water soluble probe with a characteristic monomer and excimer fluorescence. The monomer is present in water solution at concentration 10-5 mol.dm-3, while only the excimer exists in frozen solutions as can be seen from the picture below. Initial results of this study are the subject of this poster.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GP203%2F09%2FP445" target="_blank" >GP203/09/P445: Luminescence and Electrochemical Study of Compounds in Ice</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů