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UV–visible spectra of metals and nutraceuticals in phosphate buffer (pH 7.4): (A) genistein (10 µM) with uranium (10 µM); (B) curcumin (10 µM) with uranium (10 µM) or cobalt (10 µM); (C) quercetin (10 µM) with uranium (10 µM) or cobalt (10 µM).
