Document Detail


Trace metal concentrations in the North-western Mediterranean atmospheric aerosol between 1986 and 2008: seasonal patterns and decadal trends.
MedLine Citation:
PMID:  20382411     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Climatic and anthropogenic changes are able to engender modifications in the aerosol composition at different geographical and temporal scales. The present study addresses this question for the trace metal concentrations (TM=Al, Fe, Mn, Co, Ni, Cu, Pb, Cd and Zn) of aerosol from the North-western Mediterranean coast of France (Cap Ferrat, nearby Nice) between 1986 and 2008. From seasonal variations (2006-08) and decadal trends (1986-2008) of TM concentrations, three groups of elements can be distinguished. They consist of different aerosol sources: crustal-derived elements (Al, Fe, Mn and Co), trace metals of anthropogenic origin (Pb, Cd and Zn) and a third, intermediate, group of trace metals that presented both anthropogenic and natural/crustal influences (Ni and Cu). Reproducible seasonal patterns were observed for crustal and intermediate elements with highest concentrations between May and November, while anthropogenic trace metals did not show a pronounced seasonal cycle. Nevertheless, highest concentrations of anthropogenic trace metals occurred mostly in autumn/winter. Aerosol concentrations of anthropogenic TMs decreased remarkably over the last two decades, while crustal trace metals did not show any evolution. Nickel and copper aerosol concentrations remained constant, as well. Lead concentrations decreased from 1986 (29.34 ng m(-3)) to 2008 (3.33 ng m(-3)), overall by 90%. Cadmium and zinc aerosol concentrations decreased by 66 and 54%, respectively, between 1998 and 2006-08, from 0.27 to 0.09 ng m(-3) and from 23.9 to 10.9 ng m(-3), respectively. These findings demonstrate the response of the atmospheric environment to the implementation of antipollution policies. Possible changes of trace metal emissions sources and local influences are discussed.
Authors:
Lars-Eric Heimb?rger; Christophe Migon; Aur?lie Dufour; Jean-Francois Chiffoleau; Daniel Cossa
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-04-10
Journal Detail:
Title:  The Science of the total environment     Volume:  408     ISSN:  1879-1026     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-05-05     Completed Date:  2010-06-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  2629-38     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier B.V. All rights reserved.
Affiliation:
UMPC Universit? Paris 06, UMR 7093,Observatoire oc?anographique, Villefranche/Mer, France. lars.heimbuerger@obs-vlfr.fr
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MeSH Terms
Descriptor/Qualifier:
Aerosols / analysis
Air Pollutants / analysis*
Air Pollution / statistics & numerical data
Atmosphere / chemistry*
Environmental Monitoring
Mediterranean Sea
Metals / analysis*
Seasons
Time
Chemical
Reg. No./Substance:
0/Aerosols; 0/Air Pollutants; 0/Metals

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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