Fig. 8. Stacked, normalized L_III–X-ray absorption near edge structure (XANES) spectra for lead in sediment samples and standards. Sediment samples were collected at 99 d (solid line) or 207 d (dashed line) for each treatment. Data for standards are represented as solid lines for PbCO₃ and PbSO₄, and dashed lines for PbS and PbO.

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