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Sci Total Environ


Title:Ambient air levels of volatile organic compounds (VOC) and nitrogen dioxide (NO2) in a medium size city in Northern Spain
Author(s):Parra MA; Elustondo D; Bermejo R; Santamaria JM;
Address:"Laboratorio Integrado de Calidad Ambiental (LICA), Departamento de Quimica y Edafologia, Facultad de Ciencias, Universidad de Navarra. Irunlarrea 1, 31008, Pamplona, Navarra, Spain. mparravi@alumni.unav.es"
Journal Title:Sci Total Environ
Year:2009
Volume:20081122
Issue:3
Page Number:999 - 1009
DOI: 10.1016/j.scitotenv.2008.10.032
ISSN/ISBN:0048-9697 (Print) 0048-9697 (Linking)
Abstract:"Ambient concentrations of volatile organic compounds (VOC) and nitrogen dioxide (NO2) were measured by means of passive sampling at 40 sampling points in a medium-size city in Northern Spain, from June 2006 to June 2007. VOC and NO2 samplers were analysed by thermal desorption followed by gas chromatography/mass-selective detector and by visible spectrophotometry, respectively. Mean concentrations of benzene, toluene, ethylbenzene, xylenes, propylbenzene, trimethylbenzenes, and NO(2) were 2.84, 13.26, 2.15, 6.01, 0.59, 1.32 and 23.17 microg m(-3) respectively, and found to be highly correlated. Their spatial distribution showed high differences in small distances and pointed to traffic as the main emission source of these compounds. The lowest levels of VOC and NO2 occurred during summer, owing to the increase in solar radiation and to lower traffic densities. Mean concentrations of benzene and NO2 exceeded the European limits at some of the monitored points"
Keywords:Air/*analysis Air Pollution/analysis Benzene/analysis Benzene Derivatives/analysis Circadian Rhythm Gas Chromatography-Mass Spectrometry Humans Nitrogen Dioxide/*analysis Seasons Spain Toluene/analysis Urban Population Vehicle Emissions/analysis Volatile;
Notes:"MedlineParra, M A Elustondo, D Bermejo, R Santamaria, J M eng Research Support, Non-U.S. Gov't Netherlands 2008/11/26 Sci Total Environ. 2009 Jan 15; 407(3):999-1009. doi: 10.1016/j.scitotenv.2008.10.032. Epub 2008 Nov 22"

 
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