Thoracic Fraction (PM<sub>10</sub>) of Resuspended Urban Dust: Geochemistry, Particle Size Distribution and Lung Bioaccessibility
Christine Levesque,
Clare L. S. Wiseman,
Suzanne Beauchemin,
Pat E. Rasmussen
Affiliations
Christine Levesque
Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau, HECS Branch, Health Canada, 251 Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
Clare L. S. Wiseman
School of the Environment, University of Toronto, Toronto, ON M5S 3E8, Canada
Suzanne Beauchemin
Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau, HECS Branch, Health Canada, 251 Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
Pat E. Rasmussen
Exposure and Biomonitoring Division, Environmental Health Science and Research Bureau, HECS Branch, Health Canada, 251 Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
A fluidized bed aerosol generator was connected to a 13-stage cascade impactor (nanoMOUDI) for the size fractionation of urban dust (10 (thoracic) fraction of road dust sampled from expressways, arterial roads and local roads in Toronto, Canada. The fine particle fractions (10 (by weight). Elemental analysis using ICP-MS and ICP-OES revealed an overall trend of element enrichment in the p < 0.05) for Zn when using Gamble solution, and for seven out of the 14 target elements when using ammonium citrate. These results show the importance of characterizing the fine fraction of road dust.
