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. 2016 Jan 21;6:19499. doi: 10.1038/srep19499

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(a) k³-Weighted normalized Cd K-edge EXAFS spectra for montmorillonite (Mont), bacteria (P. p) and HA after adsorbing Cd in the presence of 0.01 mol/L KNO3 at pH 5 and 28 °C. (b) Normalized Cd K-edge k³-weighted EXAFS spectra of Mont-bacteria, Mont-HA and Mont-HA-bacteria composites after adsorbing Cd in the presence of 0.01 mol/L KNO₃ at pH 5 and 28 °C. Dotted lines (red) display the best 2-component or 3-component linear combination fitting of the reference spectra. The fitting results are displayed in Table 3.