Lead Isotopes Methodology
Purification: Lead is separated from the matrix elements by means of extraction chromatography using Eichrom cation exchange resin following the methods of Pourmand and Dauphas (2010).
Pb isotope measurements: Stable isotopes of lead measurements are performed with a Neptune Plus multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS).
Pourmand, A. and Dauphas, N., 2010. Distribution coefficients of 60 elements on TODGA resin: Application to Ca, Lu, Hf, U and Th isotope geochemistry. Talanta 81, 741-753.