Organochlorine pesticides (DDTs, HCHs, HCB) and selected PCBs were analyzed in samples from a firn core drilled on the Lys Glacier (4240m above sea level, Monte Rosa Group, Italian Alps) in Summer 2000. The samples covered a relatively short time interval (from 1997 to 2000) and a seasonal detail breakdown was possible. A probable seasonal trend was observed only for g-HCH, a pesticide currently used in some European countries. For all other chemicals, a seasonal trend was not evident, and this supports the hypothesis of the prevailing role of long-range transport in comparison with local emissions for POP pollution in high mountains. The role of temperature on air¿snow exchange has also been highlighted.
Villa, S., Negrelli, C., Maggi, V., Finizio, A., Vighi, M. (2006). Analysis of a firn core for assessing POP seasonal accumulation on an alpine glacier. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 63(1), 17-24 [10.1016/j.ecoenv.2005.05.006].
Analysis of a firn core for assessing POP seasonal accumulation on an alpine glacier
Villa, S;Maggi, V;Finizio, A;Vighi, M
2006
Abstract
Organochlorine pesticides (DDTs, HCHs, HCB) and selected PCBs were analyzed in samples from a firn core drilled on the Lys Glacier (4240m above sea level, Monte Rosa Group, Italian Alps) in Summer 2000. The samples covered a relatively short time interval (from 1997 to 2000) and a seasonal detail breakdown was possible. A probable seasonal trend was observed only for g-HCH, a pesticide currently used in some European countries. For all other chemicals, a seasonal trend was not evident, and this supports the hypothesis of the prevailing role of long-range transport in comparison with local emissions for POP pollution in high mountains. The role of temperature on air¿snow exchange has also been highlighted.
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