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Mercury Transport and Contamination in the Lake Ontario Basin

Mercury is a persistent contaminant. Exposure of humans and wildlife   to mercury is controlled by a complex sequence involving supply of   ionic mercury, conversion of ionic mercury to methylmercury, the   bioaccumulation of methylmercury along the aquatic food chain and  ultimately consumption of fish.    Although an important contaminant for the Great Lakes, little is   known about mercury in Lake Ontario. We hypothesize that: Lake   Ontario is a net sink for mercury inputs, and that the surrounding   watersheds control the production and supply of methylmercury and  subsequent trophic transfer to aquatic biota.    The objectives for this project are:  1) To develop and test an automated methodology for the analysis of   methylmercury;  2) To collect and analyze tributary samples for Lake Ontario and   develop a preliminary mass balance of mercury for the lake; and  3) To evaluate methylmercury supply and trophic transfer in   embayments of Lake Ontario.    These objectives will be accomplished through laboratory methods   development, field sampling and laboratory analysis, and analysis of   archived biological samples. It is envisioned that this study will   provide valuable capability and data which will be used in the   development of a comprehensive proposal to investigate mercury   dynamics in the Lake Ontario basin.    (Lake Ontario); (Hg); (mercury); (methylmercury); (ionic mercury);   (toxic metal); (toxic metals); (chemicals of concern); (chemical of   concern); (human health)

Status
In progress
Type
Project
Start Date
End Date
Researchers
Charles T. DriscollPrincipal Investigator
Associated with 5 projects
Agencies

Funding 1 projects for a total of $100,000.00
Scope of Study
Field and Modeling
Laboratory Investigation
Literature / Existing Data
Scale of Phenomena
Biochemical
Landscape
Physical/Chemical
Impact of Pollutants
Toxic Metals
Resource Management
Fisheries
Wildlife
Lake Basin Connecting Channels
Lake Ontario
State Province
New York
Resource Being Monitored
Air Quality
Fisheries
Habitat
Human Health
Wildlife
Beneficial Use Impairment Assessments
Added Costs to Agriculture or Industry
Compliance with Environmental Quality Objectives
Restrictions of Fish and Wildlife Consumption
Tainting of Fish and Wildlife Populations
Annex Numbers
Persistent Toxic Substances
Remedial Action Plans and Lakewide Management Plans
Research & Development
Specific Objectives for toxic substances and effluents
Annex 17
Mass transfer of pollutants between GL Basin Ecosystem components
General
Monitoring
Annex
  • Annex Numbers
    Annex Numbers
    Persistent Toxic Substances
    Remedial Action Plans and Lakewide Management Plans
    Research & Development
    Specific Objectives for toxic substances and effluents
  • Annex 17
    Annex 17
    Mass transfer of pollutants between GL Basin Ecosystem components

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