Summary
The affinity of H+ and various metal-ions towards complexing agents of biological importance is characterised by the formation constantk*. The binding state of Cu2+ in human plasma is discussed and the amount of free Cu2+ is estimated to about 10−6 moles per liter.
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Fallab, S., Erlenmeyer, H. Kationengleichgewichte in biologischen Systemen. Experientia 11, 174–175 (1955). https://doi.org/10.1007/BF02161299
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DOI: https://doi.org/10.1007/BF02161299