AAAR 33rd Annual Conference
October 20 - October 24, 2014
Rosen Shingle Creek
Orlando, Florida, USA
Abstract View
Influence of Industrial Activities on Concentrations and Chemical Composition of Ambient Aerosol Particles
ALEXANDRE SYLVESTRE, Aurelie Mizzi, Sebastien Mathiot, Boualem Mesbah, Julien Don, Gautier Revenko, Philippe Chamaret, Jean-Luc Jaffrezo, Henri Wortham, Nicolas Marchand, Aix-Marseille Université, CNRS, LCE FRE 3416
Abstract Number: 186 Working Group: Source Apportionment
Abstract Located in the South East of France, Fos-sur-Mer is one of the largest industrial harbors in Europe. Multiple industrial activities are implanted; mostly oil refineries and steel plants. Previous studies showed the influence of this industrial area on the air quality over the city of Marseille (El Haddad et al, 2011), but no detailed chemical data of aerosol composition in this area were available so far.
Aerosols (PM2.5) were thus collected on a 24h basis during one year (May 2012 to August 2013) in three residential areas in the vicinity of the main industrial activities: Fos-sur-Mer, Port-St-Louis and Rognac. 432 samples were collected and 82 were selected for an in-deph chemical analysis (OC/EC, major ions, metals and organic markers). The selected samples encompass all the pollution typologies which can be observed in this area.
Results show an increase of OC by a factor of 2 during PM10 episodes (daily average over 50µg/m3). High PAH concentrations (up to 100ng/m3) are observed during those episodes but also when daily limit of 50µg/m3 is not reached. High concentrations of trace metals were also observed with total concentration up to 2µg/m3 at Fos-sur-Mer and Port-St-Louis. Total metal concentrations are 5 times lower at Rognac on average. If at Fos-sur-Mer, PAH are associated with some metals like Se, Rb, Pb, Ni, Mo or Cs such correlations are less pronounced at Rognac and Port-St-Louis pointing out the influences of different sources. Furthermore, intense episodes of submicron particles (up to 300 000 cm-3) associated with SO2 are observed, highlighting the impact of industrial activities during days for which the exceedance limit is not reached (Dron et al., 2014). CMB and PMF analysis including both trace metals and organic markers will be presented in order to assess the total impact of industrial emissions in this very sensitive area.