Canadian Atmospheric Mercury Measurement Network (CAMNet)

Duration:

July 1994 to present

Description:

Environment Canada operates CAMNet with 11 sites having locations ranging from approx. 43 deg to 82 deg N latitude and approx. 62 deg to 123 deg. W longitude.

Objectives:

  • To improve the current understanding of the atmospheric transport, transformation and removal processes of elemental mercury and its ecologically significant compounds released into the environment.
  • To establish spatial variability and temporal trends in Hg concentrations in the atmosphere and in precipitation on a regional/national basis.
  • To identify major point and/or regional (area/line) sources of atmospheric mercury emissions.
  • To investigate trans-boundary atmospheric transport of this pollutant and to establish how Canadian concentrations in air and precipitation compare with those measured elsewhere.
  • To provide input to and scientific data for validating numerical models describing the atmospheric pathways and characteristics of mercury species emitted into the environment.
  • To provide scientific data for future health-based studies and risk assessments involving atmospheric aspects of mercury in the Canadian environment.

Collection Information:

Ambient mercury vapour concentrations are determined on a continuous basis using fully automated cold vapour atomic fluorescence spectrometric analyzers. CAMNet uses the Canadian-made Tekran Model 2537A Ambient Mercury Vapour Analyzer to monitor Total Gaseous Mercury (TGM) concentrations. The measured TGM concentrations are converted to 1-hour or 6-hour means for data analysis and interpretation.

Contacts:

Dr. Cathy Banic
Environment Canada
4905 Dufferin Street
Toronto, Ontario, CANADA M3H 5T4
Tel: 416-739-4613
Dr. Keith Puckett
Environment Canada
4905 Dufferin Street
Toronto, Ontario, CANADA M3H 5T4
Tel: 416-739-4836