Abstract
The results of analyses of surface waters collected from a variety of locations in west-central Indiana indicate extensive contamination by acidic mine drainage. These samples had pH values as low as 2.1 and total iron concentrations as high as 1200 mg1−1. The speciation of iron, expressed as the ratio [Fe(II)]/[Fe(III)] ranged from 0.08 to 8.27. Measured lead concentrations were as high as 811 mgl−1. In addition, the concentrations of nitrate and sulfate ions were as high as 359 and 624 mgl−1, respectively.
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Allen, S.K., Allen, J.M. & Lucas, S. Concentrations of contaminants in surface water samples collected in west-central Indiana impacted by acidic mine drainage. Geo 27, 34–37 (1996). https://doi.org/10.1007/BF00770600
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DOI: https://doi.org/10.1007/BF00770600