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Found 10 records similar to Sediment Core Paleo-analyses, Oil Sands Region
Assessing polycyclic aromatic hydrocarbon and naphthenic acid concentrations in soils collected in 2012 – Field and Laboratory Assessment of Contaminants
The concentrations of polycyclic aromatic hydrocarbons (PAHs) and naphthenic acids (NAs) were measured in soil samples collected in 2012. Concentrations at all sites were, with one exception, always below soil quality guidelines established by the Canadian Council of Ministers of the Environment (CCME). PAH concentrations in soil at sites near oil sands industrial development were higher than PAH concentrations in northwestern Saskatchewan. This finding was not unexpected given that PAHs are present in naturally occurring Alberta bitumen.
Plant species richness, composition, and soil chemistry parameters were assessed in wetlands and uplands in the oil sands region of northern Alberta. The concentrations of metals and polycyclic aromatic hydrocarbons (PAHs) were measured in soil and plant samples collected from 2012-2014, and naphthenic acids (NAs) from soil collected in 2012. Vegetation surveys and a seedbank study showed that plant species richness and composition differed among study sites, with more species (many non-native) found at sampling sites located within close proximity to oil sands development and infrastructure compared to sites located further afield. PAH and metal concentrations in soil at sites near oil sands industrial development were generally higher than levels at sites located outside of the immediate surface mining area.
Lake sediment cores were collected from several locations in Canada as part of the historic mercury and heavy metal deposition trend, analysis, and research component of the Clean Air Regulatory Agenda/Climate Change and Air Pollutant (CARA/CCAP) and Oil Sands Monitoring (OSM) programs. The reason sediment core analysis is used for research purposes is the bottom of a lake can act as a record of the contaminants and all other materials which have fallen into the lake over time. The lake water acts as both a sorting device and as a preservative since the deposits fall in chronological order and if not subject to dredging are not normally otherwise disturbed by humans. In areas where depositional histories are complex, including changing contributions from local, regional and global sources, multiple dated lake sediment cores are useful tools for examining response of not only aquatic ecosystems, but their surrounding landscapes through time to changing emission/deposition scenarios.
Sediment quality data for 20 lakes across Canada. Parameters include total mercury, methylmercury, sulfate, inorganic and organic carbon, nitrogen, and total recoverable metals. Bottom sediment samples were collected from one to three locations on each lake, following nationally standardized protocols. Sampling period was 2011 to 2016, with some core lakes sampled throughout the period and others sampled one time only.
The Great Lakes Sediment Database (also known as the National Water Research Institute (NWRI) Sediment Archive) is an archive of data on the sediments of the Great Lakes, their connecting channels, and the St. Lawrence River which was collected by NWRI and in cooperation with other agencies between 1960 and 1975. It is housed in Environment and Climate Change Canada's Canada Centre for Inland Waters in Burlington, Ontario. The data has been subdivided into two groups according to location and purpose:
1.Great Lakes Basin Sediment Data: physical and geochemical data for sediment samples and cores collected lakewide in lakes Ontario, Erie, St. Clair, Huron (including Georgian Bay), Michigan and Superior between 1960 and 1975 by R.L. Thomas, A.L.W.
Atmospheric Contaminant Deposition using Snowpack
The data set includes snow samples (metals, water chemistry and polycyclic aromatic hydrocarbons [PAHs]). Data from 2012-2014 snowpack samples collected from ~90-130 sites located varying distances from the major oil sands development area show deposition patterns and levels consistent with earlier studies carried out in 2008 (Kelly et al. PNAS, 2009 and 2010). As with earlier findings, concentrations of numerous metals, water chemistry parameters (Ni, Pb, Zn, V, La, Al, Fe, total Hg, methyl Hg, total suspended solids [TSS], particulate organic carbon [POC], particulate organic nitrogen [PON], total phosphorus [TP]) and PAHs decrease with distance from the major mining extraction and upgrading facilities.
Avian Health and Contaminants
Data on tree swallow clutch size and nestling weight, wing length, organ size, and measures of thyroid function were collected from study sites near active mine pits, tailings ponds and processing plants on oil sands leases in Alberta, and at relatively undisturbed reference sites south of Fort McMurray, Alberta. Analysis of the birds’ reproductive performance has revealed that neither hatching success nor fledging success differed between industrial and reference sites. PAHs, alkylated PAHs, and dibenzothiophenes were measured in tree swallow nestling tissues and fecal samples. Tree swallow nestlings on the industrial sites had higher or comparable PAH concentrations in both their muscle and fecal samples, compared to tree swallow nestlings on the reference sites.
This dataset represents Lake Sediment Geochemical Analyses for the province of Saskatchewan. This dataset represents Lake Sediment Geochemical Analyses for the province of Saskatchewan. During the intense level of activity directed toward the exploration for uranium in the 1970s, the Saskatchewan Geological Survey and the Geological Survey of Canada funded the collection of several thousand samples of sediments and waters from lakes around the Athabasca Sandstone. All sediment samples were analyzed for U, Cu, Ni, Pb, Zn, Co, Fe and Mn.
This dataset is the digital compilation of Lake Sediment Analyses was done by the GSC for the Precambrian Shield area of Saskatchewan. This dataset represents the water and sediment geochemistry for select lakes in Saskatchewan. This product was produced by the Geological Survey of Canada as Open file 7746. During the intense level of activity directed toward the exploration for uranium in the 1970s, the Saskatchewan Geological Survey and the Geological Survey of Canada funded the collection of several thousand samples of sediments and waters from lakes around the Athabasca Sandstone.
These data are water quality parameters sampled by Environment Canada via a Memorandom of Understanding. The individual parameters were used to calculate results for the Canadian Council of Environment Ministers (CCME) water quality index (WQI).