Abstract
Background levels of As, Cd, Co, Cu, Pb, and Zn in Chernozemic and Luvisolic soils from Alberta were established and are similar to the average terrestrial abundances in shale and granite. Redistribution of As, Cd, Co, Cu, and Zn within the solum was more pronounced in Luvisolic soils than in Chernozems. Partitioning of the six trace elements, determined by analysis of particle size separates, was unique for each element. Copper and zinc were more uniformly enriched in clay separates than were the other four trace elements. Differences in the content of trace elements within and among soils arise not only from textural variation, but also from large variations in the quantity of trace elements within a specific particle size fraction.
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