Copper isotopic fractionation during adsorption on manganese oxide: Effects of pH and desorption

  title={Copper isotopic fractionation during adsorption on manganese oxide: Effects of pH and desorption},
  author={Yuta Ijichi and Takeshi Ohno and Shuhei Sakata},
  journal={Geochemical Journal},
centrations of free Cu2+ (Coale and Bruland, 1988). Copper has two naturally occurring stable isotopes: 63Cu (69.15% abundance) and 65Cu (30.85%). Recent studies have shown that Cu2+ in deep marine waters has a heavier isotopic composition than in surface waters (Takano et al., 2014), with isotopically light Cu in surface waters being the result of mixing with river and rain waters. To achieve heavier Cu composition in deep waters, sedimentary sinks of 63Cu, as ferromanganese oxides, are needed… Expand
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