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Development of Techniques to Directly Measure Mercury Dry Deposition

This project will develop and test a mercury dry deposition   measurement technique involving the use of exposed filters with   various coatings. These filters are exposed to the open air by being   secured to the top of a horizontal service for a given period of   time. They are then analyzed in a laboratory to determine the amount   of mercury that has accumulated on them. By using various coatings   on the filters, the deposition of different types of mercury can be   assessed. The intent is to provide an inexpensive method that   results in accurate measures of mercury dry deposition over a   moderately long timeframe (for example, several days to two weeks).   Such a technique could be used in tandem with commonly used wet   deposition measurements (such as rain collection) to determine the   total amount of mercury reaching a given surface from the air. Such   information is essential in determining the behavior of mercury in   the Great Lakes and other water bodies and is currently not widely   known for most locations.     The study will focus on mercury, a substance of high concern within   the Great Lakes region due to its high toxicity and tendency to   accumulate at high levels within fish.    (toxic metals); (mercury): (Hg); (toxic metal); (chemicals of   concern); (chemical of concern)

Status
In progress
Type
Project
Start Date
End Date
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Biochemical
Physical/Chemical
Impact of Pollutants
Toxic Metals
Annex Numbers
Airborne Toxic Substances
Research & Development
Specific Objectives for toxic substances and effluents
Annex 17
Physical and transformational processes affecting delivery of pollutants
General
Annex
  • Annex Numbers
    Annex Numbers
    Airborne Toxic Substances
    Research & Development
    Specific Objectives for toxic substances and effluents
  • Annex 17
    Annex 17
    Physical and transformational processes affecting delivery of pollutants

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up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.