| Title: | Spatial Variation of Aerosol Chemical Composition and Organic Components Identified by Positive Matrix Factorization in the Barcelona Region |
| Author(s): | Mohr C; DeCarlo PF; Heringa MF; Chirico R; Richter R; Crippa M; Querol X; Baltensperger U; Prevot AS; |
| Address: | "Laboratory of Atmospheric Chemistry, Paul Scherrer Institute (PSI) , Villigen 5232, Switzerland. Institute for Environmental Assessment and Water Research (IDAEA-CSIC) , Barcelona 08034, Spain" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "The spatial distribution of PM1 components in the Barcelona metropolitan area was investigated using on-road mobile measurements of atmospheric particle- and gas-phase compounds during the DAURE campaign in March 2009. Positive matrix factorization (PMF) applied to organic aerosol (OA) data yielded 5 factors: hydrocarbon-like OA (HOA), cooking OA (COA), biomass burning OA (BBOA), and low volatility and semivolatile oxygenated OA (LV-OOA and SV-OOA). The area under investigation ( approximately 500 km(2)) was divided into six zones (city center, harbor, industrial area, precoastal depression, 2 mountain ranges) for measurements and data analysis. Mean zonal OA concentrations are 4.9-9.5 mug m(-3). The area is heavily impacted by local primary emissions (HOA 14-38%, COA 10-18%, BBOA 10-12% of OA); concentrations of traffic-related components, especially black carbon, are biased high due to the on-road nature of the measurements. The formation of secondary OA adds more than half of the OA burden outside the city center (SV-OOA 14-40%, LV-OOA 17-42% of OA). A case study of one measurement drive from the shore to the precoastal mountain range furthest downwind of the city center indicates the importance of nonfossil over anthropogenic secondary OA based on OA/CO" |
| Keywords: | "Aerosols/*analysis Air Pollutants/*analysis Biomass Cities Cooking Geography *Models, Theoretical Organic Chemicals/*analysis Particulate Matter/analysis Spain Volatilization;" |
| Notes: | "MedlineMohr, Claudia DeCarlo, Peter F Heringa, Maarten F Chirico, Roberto Richter, Rene Crippa, Monica Querol, Xavier Baltensperger, Urs Prevot, Andre S H eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2015/08/04 Environ Sci Technol. 2015 Sep 1; 49(17):10421-30. doi: 10.1021/acs.est.5b02149. Epub 2015 Aug 12" |
