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Offset XANES spectra showing the (A) Pd K‐edge of a Pdmetal reference foil and the Pd/Au, Pd/Ag and Pd only bioprecipitates; (B) Ag K‐edge of an Ag‐metal reference foil and the Pd/Ag bioprecipitates; and (C) Au L3 edge of a Au‐metal reference foil and the Pd/Au bioprecipitates.
