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Isotope fractionation of palladium in chemical exchange reaction

Abstract : Palladium isotopes were fractionated by the solvent extraction technique with a crown ether. After purification by ion-exchange chemistry, the isotopic ratios of 105Pd/106Pd, 108Pd/106Pd, and 110Pd/106Pd were determined by multiple-collector inductively coupled plasma mass spectrometry. Isotope fractionations between the two phases were found to be larger than 0.1‰. The isotope fractionation of the odd atomic mass isotope (105Pd) showed a deviation from that estimated from the even atomic mass isotopes (106Pd, 108Pd, and 110Pd). The mass-independent isotope fractionation found was attributable to the nuclear field shift effect. The quantum chemical calculations for the different Pd species supported the validity of the isotope fractionation factors obtained.
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Submitted on : Tuesday, December 20, 2011 - 5:03:01 PM
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T. Fujii, F. Moynier, Arnaud Agranier, Emmanuel Ponzevera, M. Abe. Isotope fractionation of palladium in chemical exchange reaction. Proceedings in radiochemistry, 2011, 1, pp.339-344. ⟨10.1524/repr.2011.0060⟩. ⟨insu-00654033⟩



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