Document Detail


Atmospheric nitrogen deposition on the east coast of Spain: relevance of dry deposition in semi-arid Mediterranean regions.
MedLine Citation:
PMID:  11939288     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Bulk deposition composition and pine branch washing were measured from April 1999 to March 2000 on the east coast of Spain. The main objective was to characterise N deposition patterns with special emphasis on dry deposition. Bulk deposition in the region is dominated by neutralisation processes by Ca2+ and HCO3-, ClNa of marine origin and a high correlation between NO3- and SO4(2-). SO4(2-) concentrations show a decrease with respect to previous studies in the region in agreement with generalized sulfur emission decreases while the remaining ions, including NO3-, are higher due to their general increase as well as to the inclusion of dry deposition in bulk collectors in the present study. An enrichment in NO3- has been observed in dry deposition composition branch washing) with respect to bulk deposition, while an impoverishment has been observed in the case of NH4+. Annual bulk deposition varies between 7.22-3.1 and 3.5-1.8 Kg ha(-1) year(-1) for S- SO4(2-) and N- NO3-, respectively. N total deposition goes from 9.78 to 6.8 Kg ha(-1) year(-1) at most stations, with the lowest deposition at the control station and Alcoi. The relative dry deposition with respect to the total was over 40% at most stations, going up to 75% at the southern station. N-deposition is expected to be higher considering that N-NH4+ deposition has been underestimated in this study.
Authors:
M J Sanz; A Carratala; C Gimeno; M M Millan
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental pollution (Barking, Essex : 1987)     Volume:  118     ISSN:  0269-7491     ISO Abbreviation:  Environ. Pollut.     Publication Date:  2002  
Date Detail:
Created Date:  2002-04-09     Completed Date:  2002-09-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8804476     Medline TA:  Environ Pollut     Country:  England    
Other Details:
Languages:  eng     Pagination:  259-72     Citation Subset:  IM    
Affiliation:
Fundación CEAM, Parque Tecnológico, Valencia, Spain. mjose@ceam.es
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MeSH Terms
Descriptor/Qualifier:
Air Pollutants / analysis*
Desert Climate
Environmental Monitoring*
Mediterranean Region
Nitrogen / analysis*
Pinus
Sulfates / analysis
Chemical
Reg. No./Substance:
0/Air Pollutants; 0/Sulfates; 7727-37-9/Nitrogen

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


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