Fig. 7. Successive Mn XANES scans of a Lordstown-II sample that had been pretreated with Mn(II). Scans are averaged into groups of four and offset by 0.05 relative intensity (scan 5 was interrupted by a beam dump and is not shown). The soil had 80 mmol kg^-1 of Mn(II) added in two doses 3 and 4 wk before analysis, and 20 mmol kg^-1 of Mn(II) added just before analysis

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