The influence that different urban development models has on PM2.5 elemental and bioaccessible profiles
Gabriela Polezer1, Andrea Oliveira2, Sanja Potgieter-Vermaak3,4
1Environmental Engineering Department, Federal University of Parana, Curitiba, Parana, Brazil.
Scientific Reports
|October 18, 2019
Summary
Urban development significantly impacts particulate matter (PM2.5) bioaccessibility. Manaus
Area of Science:
- Environmental Science
- Toxicology
- Urban Planning
Background:
- Limited in-vitro studies exist for PM2.5.
- PM2.5 bioaccessibility in artificial lysosomal fluid (ALF) is underexplored in relation to urban development models.
Purpose of the Study:
- To investigate the influence of distinct urban development models on PM2.5 in-vitro profiles.
- To compare PM2.5 elemental and bioaccessible profiles in Manaus and Curitiba, Brazil.
Main Methods:
- Analysis of PM2.5 mass concentrations.
- Determination of total elemental and bioaccessible profiles for Cu, Cr, Mn, and Pb in ALF.
- Comparison between Manaus (free trade zone industrialization) and Curitiba (sustainable service economy).
Main Results:
- Copper (Cu) exhibited the highest bioaccessibility (100%), significantly higher in Curitiba than Manaus.
- Manganese (Mn) showed the lowest solubility.
- Despite similar PM2.5 mass, Manaus presented a higher public health risk, indicating distinct emission sources.
Conclusions:
- Urban development strategies profoundly affect airborne PM2.5 composition and bioaccessibility.
- Sustainable air quality strategies are crucial for urban planning to mitigate public health risks associated with PM2.5.
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