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Cadmium and zinc additions to wisconsin soils by commercial fertilizers and wastewater sludge application

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Abstract

Cadmium and Zn concentrations were determined on 21 commercial fertilizer samples by atomic absorption. The Cd concentration ranged from 1.5 to 9.7 mg kg−1, the median being 4.3 mg kg−1. Zinc showed a much wider range. The Cd added to soil by commercial fertilizers may be as much as 2150 kg annually in Wisconsin, compared to a potential of 1700 kg if wastewater sludges from all municipal sewage treatment plants in the state were disposed of on land. However, because of the higher application rates, sludge Cd on a soil concentration basis is a much more concentrated source of Cd than that from phosphate fertilizers.

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Lee, K.W., Keeney, D.R. Cadmium and zinc additions to wisconsin soils by commercial fertilizers and wastewater sludge application. Water, Air and Soil Pollution 5, 109–112 (1975). https://doi.org/10.1007/BF00431584

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  • DOI: https://doi.org/10.1007/BF00431584

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