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Total potential source contribution function analysis of trace elements determined in aerosol samples collected near
1Nuclear Engineering Teaching Laboratory, The University of Texas at Austin, Austin, Texas 78712, USA. biegalski@mail.utexas.edu
Environmental Science & Technology
|September 24, 2004
Summary
Trace elements in aerosols were analyzed using neutron activation analysis. Total Potential Source Contribution Function (TPSCF) analysis identified origins from Quebec, Canada to Georgia, USA, with seasonal variations noted.
Area of Science:
- Environmental Science
- Atmospheric Chemistry
- Geochemistry
Background:
- Aerosol samples were collected at a rural site on Lake Huron from 1992-1994.
- Analysis focused on determining air concentrations of over 30 trace elements.
Purpose of the Study:
- To identify the geographical origins of atmospheric aerosols.
- To investigate seasonal variations in aerosol composition and sources.
Main Methods:
- Neutron activation analysis was employed for trace element determination.
- Total Potential Source Contribution Function (TPSCF) analysis was used to pinpoint aerosol origins.
- Seasonal TPSCF calculations were performed to account for temporal variations.
Main Results:
- Air concentrations of over 30 elements were quantified.
- TPSCF identified source regions for specific elements (As, In, Sb, Se, Sn, Zn) spanning from Quebec, Canada to Georgia, USA.
- Significant seasonal variations in element concentrations and their source regions were observed.
Conclusions:
- The study successfully traced the geographical origins of various aerosol components.
- Seasonal patterns significantly influence atmospheric aerosol composition and long-range transport.
- Understanding these sources is crucial for air quality management and pollution control strategies.
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