N-Con wet deposition collector

The following equipment and methods are being used for the collection and analysis of the atmospheric samples.

• N-Con wet deposition collector
  - optical infrared precipitation detection for high catch efficiency
  - minimal horizontal surfaces reduces splash
  - temperature regulation to keep sampling train and funnel above 0° Celcius for snow sampling
• Sample bottle precharged with 20 mL 1% Hydrochloric acid
• Biweekly sample collected using ultra clean techniques
• Samples analyzed for total and methyl mercury at the USGS Mercury Research Laboratory in Wisconsin