Contaminants in environmental samples : mercury in the Peace, Athabasca and Slave River basins / prepared for the Northern River Basins Study under project 5312-D1 by David B. Donald, Heather L. Craig... : R71-49/3-105E-PDF
"...This project report describes the results of an effort to gather together all the existing analytical data on mercury within various elements of the Peace, Athabasca and Slave river aquatic ecosystem. The compilation was intended to describe the temporal and spatial changes of this contaminant within the study area. While historic provincial and federal data, along with data collected by NRBS between 1992 and 1994, were the principal source of information for this report, other sources were used if available. Considerable variation was found in the data sets held by various agencies and industry. In a number of instances the variation in collection, analysis and reporting the data raised questions about reliability"--Study perspective.
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