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. 2021 May 8;26(4):479–494. doi: 10.1007/s00775-021-01864-w

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© The Author(s) 2021

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Fig. 2 — Chromatograms of aqueous zinc (A), iron (B), manganese (C), nickel (D), and copper (E) on an unloaded (grey) and ⁶⁷ZnSO₄-loaded single SEC column (black). A (a–c), 5, 2, and 1 µM Zn acetate, respectively. B (a–c), 5, 2, and 1 µM FeSO₄. C (a–c), 5, 2, and 1 µM MnCl₂. D (a–c), 5, 2, and 1 µM NiSO₄. E (a–b), 5 and 1 µM CuSO₄