CIMP 161_Legacy arsenic pollution in Yellowknife Bay sediments
The main objective of this project was to evaluate the long-term stability of arsenic contamination from gold mining in sediments of Yellowknife Bay (Great Slave Lake) and the potential for long-term change in arsenic diffusion from sediments to overlying water with climate warming. A multi-disciplinary study was conducted involving field measurements, laboratory experiments, and modelling. As part of the field program, water column profiles of inorganic arsenic, temperature and specific conductivity were measured in Yellowknife Bay to examine to examine the vertical distribution of surface water arsenic.
|Data Steward Emailfirstname.lastname@example.org|
|Data Collection Organization||Environment and Climate Change Canada (ECCC) / Environnement et Changement climatique Canada (ECCC); Université de Montréal|
|Data Upload Organization||Environment and Climate Change Canada (ECCC) / Environnement et Changement climatique Canada (ECCC)|
|Maintenance Frequency Code||unknown|
|Topic Category Code||inlandWaters|
|Keywords||inorganic arsenic, water column profiles, Yellowknife Bay|
|Spatial Extent||-114.351° 62.483°, -114.337° 62.486° (W S, E N)|
|Vertical Extent||1969-12-31 to 1970-01-01|
|Temporal Extent||2018-08-04 to 2019-07-10|
|Alternate Formats||FGP-HNAP ISO:19115-2 (XML) , W3C DCAT (XML) , W3C DCAT (JSON-LD)|
Environment and Climate Change Canada (ECCC) / Environnement et Changement climatique Canada (ECCC); Université de Montréal. 2020-07-11. "CIMP 161_Legacy arsenic pollution in Yellowknife Bay sediments" (dataset). 1.0.0. DataStream. https://doi.org/10.25976/gm49-2a19.
Cumulative Impact Monitoring Program (GNWT)
Data Collection Information
Water column profiles of inorganic arsenic, temperature and specific conductivity were measured at two sites at the north end of Yellowknife Bay on three occasions (August 2018, March 2019, July 2019). Water samples and sonde measurements were taken near the water surface (-0.15 m depth) and every subsequent metre until reaching the lake bottom (stopping approximately 1 m above the sediment). In the winter, the first measurements were taken at -1 m depth to avoid the overlying ice. Water temperature and specific conductivity were measured with a calibrated YSI sonde. Water samples were collected using trace metal protocols with a peristaltic pump, an acid-washed teflon line and inline high capacity filter (0.45 µm). Filtered water samples were stored in 15 mL trace metal vials and preserved with EDTA and glacial acetic acid. Filtered concentrations of inorganic arsenic were determined by hydride generation atomic fluorescence spectrometry or liquid chromatrography inductively coupled plasma mass spectrometry at the Université de Montréal.
Attribution Licence (ODC-By) v1.0
You are free to share, copy, distribute, use, modify, transform, build upon, and produce works from the data as long as you attribute any public use of the data, or works produced from the data, in the manner specified in the licence. For any use or redistribution of the data, or works produced from it, you must make clear to others the licence of the data and keep intact any notices on the original data. https://opendatacommons.org/licenses/by/1-0/
curl -G https://api.datastream.org/v1/odata/v4/Records --data-urlencode "\\$filter=DOI eq '10.25976/gm49-2a19'" -H "x-api-key: PRIVATE-API-KEY"
|File size||51.28 KB|