Total Gaseous Mercury (TGM)

At all locations the TGM measurements were made using automatic Tekran ® 2537 mercury vapour analyzers (described in detail in Poissant, 1997). The air is typically sampled at flow rates between 1.0 and 1.5 L/min (depending on location) and is passed through a Teflon filter (47 mm diameter; 0.45 µm) at the sample line inlet to remove particulate matter. Inside the analyzer, the mercury in the sample air is pre-concentrated before analysis by amalgamation on gold cartridges (5-30 minute concentration time). Mercury is removed from the gold cartridges by thermal desorption and is detected using Cold Vapour Atomic Fluorescence Spectrophotometry (CVAFS). The analyzer has two gold cartridges which allow alternating accumulation and desorption to occur simultaneously resulting in the continuous measurement of mercury in the air stream at 5-30 minute intervals. The instruments are calibrated daily using an internal mercury source and verified during routine site audits by manual injections of mercury from an external source. The data are quality controlled using the Environment Canada RDMQ (Research Data Management and Quality Control) system.

Basic view

Metadata Record Information

File Identifier
e1df5764-1eec-4a9f-9c03-f515b396b717 XML
Date Stamp
2022-06-28T17:31:44
Metadata language

eng; CAN
Character set
UTF8
Hierarchy Level
Dataset
Author
  Government of Canada; Environment and Climate Change Canada - Environment and Climate Change Canada ( Public inquiries centre)

Fontaine Building 12th floor, 200 Sacré-Coeur Blvd, Gatineau, Quebec, K1A 0H3,
1-800-668-6767

http://ec.gc.ca
 

Data identification

Title

Total Gaseous Mercury (TGM)
Date (Creation)
2014-11-14
Date (Publication)
2016-10-06
Status
On going
Metadata language

eng; CAN
Character set
UTF8
Topic category
  • Environment
Maintenance and Update Frequency
As needed
Spatial representation type
Text, table
Point of contact
  Government of Canada; Environment and Climate Change Canada - NAtChem Database and Analysis Facility ( Data dissemination facilitator)

Canada

Keywords

Theme

  • Air, Air Quality, Atmospheric Monitoring, NAtChem, Networks and Studies, CAPMoN, Pacific and Northern Region, PNR, Atmospheric Gases, Total Gaseous Mercury, TGM, Alert, Flin Flon

Government of Canada Core Subject Thesaurus

  • Air quality

ECCC Information Category EN

  • Air

Business Functions

  • Provide Air Quality/UV Information Products and Services

  • Monitor Air Quality and UV Parameters and Manage Data

Geography

  • National (CA)

external.theme.EC_Branch

  • Science and Technology Branch

external.theme.EC_Directorate

  • Atmospheric Science and Technology

external.theme.GC_Security_Level

  • Unclassified
 
Use Limitation

Open Government Licence - Canada ( http://open.canada.ca/en/open-government-licence-canada)

Access Constraints
License
Use Constraints
License
Begin Date
1995-01-01

Extent

N
S
E
W
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Ref. system Reference Systems

Reference system identifier
EPSG / EPSG:4326 /
 

Distribution

Distribution Formats

Distribution format
  • CSV ( Unknown)

  • PDF ( Unknown)

 
Distributor
  Government of Canada; Environment and Climate Change Canada - Environment and Climate Change Canada ( Public inquiries centre)

Fontaine Building 12th floor, 200 Sacré-Coeur Blvd, Gatineau, Quebec, K1A 0H3,
1-800-668-6767

http://ec.gc.ca
 
 

Overviews

thumbnail

Keywords

Air, Air Quality, Atmospheric Monitoring, NAtChem, Networks and Studies, CAPMoN, Pacific and Northern Region, PNR, Atmospheric Gases, Total Gaseous Mercury, TGM, Alert, Flin Flon
Business Functions

Monitor Air Quality and UV Parameters and Manage Data Provide Air Quality/UV Information Products and Services
ECCC Information Category EN

Air
Government of Canada Core Subject Thesaurus

Air quality
external.theme.EC_Branch

Science and Technology Branch
external.theme.EC_Directorate

Atmospheric Science and Technology
external.theme.GC_Security_Level

Unclassified


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