Analysis of a firn core for assessing POP seasonal accumulation on an alpine glacier

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 br...

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Bibliographic Details
Published in:Ecotoxicology and Environmental Safety
Main Authors: Villa, S, Negrelli, C, Maggi, V, Finizio, A, Vighi, M
Format: Article in Journal/Newspaper
Language:English
Published: Academic Press. 2006
Subjects:
POPs
mountain environment
glaciers
ice core
BIO/07 - ECOLOGIA
Monte Rosa
Online Access:http://hdl.handle.net/10281/882
https://doi.org/10.1016/j.ecoenv.2005.05.006
Description
Summary: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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