THE REACTIVE OXIDATIVE POTENTIAL FROM BIOMASS EMITTED PARTICULATE MATTER (PM10, PM2.5 & PM1) AND ITS IMPACT ON HUMAN HEALTH
Creators
- 1. 1 Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, 54124, Thessaloniki, Greece 2 Center for Research and Technology Hellas, Chemical Process and Energy Resources Institute, Thermi-Thessaloniki, 57001, Greece
- 2. 1 Aristotle University of Thessaloniki, Department of Chemical Engineering, Environmental Engineering Laboratory, 54124, Thessaloniki, Greece
Description
An extensive urban aerosol sampling campaign was carried out from January to April 2013 at two locations in
the urban area of Thessaloniki, to assess their chemical composition and their toxicity based on their ability to
generate Reactive Oxygen Species (ROS). PM levels during the cold period where higher compared to the warm
period. In addition, PM levels of all measured fractions (PM1, PM2.5 and PM10) in the urban background station
were higher than the ones in the traffic site, indicating the strong presence of PM emission sources other than
traffic; additional chemical analysis showed the strong contribution of biomass burning for space heating.
Moreover, PM levels of urban background station were characterized by higher oxidative potential values.
Considering particle concentrations, size distribution and oxidative potential, the region specific oxidative stress
(SOS) index was calculated; this is the product of the mass of different size fractioned PM deposited across the
human respiratory tract (HRT), multiplied to the oxidative potential of the specific size fraction. Thus, although
exposure to PM for the people living close to the urban background station was almost 50% higher, the overall
SOS index was up to 4 times higher.
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