Acid aerosol transport episodes in Toronto, Ontario
Authors used recently developed equipment to continuously monitor levels of H/sub 2/SO/sub 4/, NH/sub 4/HSO/sub 4/ and (NH/sub 4/)/sub 2/SO/sub 4/ concentrations in the ambient air outside Toronto, Ontario. These data were combined with 48-hour isobaric air mass back-trajectories ending in Toronto on each of the four days with highest acid (and sulfate) aerosol levels. The air masses with highest acid levels were found to have first passed over the SO/sub 2/ source region of the U.S. and then across the Great Lakes to Toronto. The role of ammonia as a modulator of aerosol acidity for eastern U.S. cities but not for Toronto (where the Great Lakes serve as ammonia sinks) is also discussed.
- Research Organization:
- New York Univ., NY (USA). Inst. of Environmental Medicine
- OSTI ID:
- 6079778
- Report Number(s):
- PB-87-209029/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACID RAIN
AEROSOLS
AIR POLLUTION
AIR POLLUTION MONITORS
AMMONIA
ATMOSPHERIC PRECIPITATIONS
CHALCOGENIDES
COLLOIDS
DISPERSIONS
HYDRIDES
HYDROGEN COMPOUNDS
MEASURING INSTRUMENTS
MONITORS
NAPAP
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION
RAIN
SOLS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TRANSFRONTIER POLLUTION