Temporal and Spatial Relationships in Fine Particle Strong Acidity, Sulphate, PM sub(10), and PM sub(2.5) Across Multiple Canadian Locations

• Published in: Atmospheric environment (1994) Vol. 31; no. 24; p. 4223
• Main Authors: Brook, Jeffrey R, Wiebe, Alan H, Woodhouse, Sandra A, Audette, Celine V, Dann, Tom F, Callaghan, Sandra, Piechowski, Maria
• Format: Journal Article
• Language: English
• Published: 01-12-1997
• ISSN: 1352-2310

At Canadian Acid Aerosol Measurement Program sites in Ontario, Quebec, Nova Scotia, and New Brunswick, fine aerosol particles were collected and analyzed for hydrogen ion and sulfate concentrations, as well as PM sub(10) and PM sub(2.5). Mean H super(+) concentrations ranged 4 30 nmol/m super(3), with highest concentrations observed in the Maritime Provinces. Mean sulfate levels ranged 21 71 nmol/m super(3). Acidities were lowest in Montreal and Toronto. The day-to-day variations in all four parameters were correlated among sites, due to the influence of synoptic-scale meteorology and the relatively long atmospheric lifetime of the fine particles. PM sub(10) and PM sub(2.5) were greater in southern Ontario and Quebec, especially in the large urban and industrial areas.