title: Isotope dilution analysis for speciation.
authors.affiliation: Group of Bio-inorganic Analytical Chemistry, Laboratorie de Chimie Bio-Inorganique et Environment, CNRS UMR 5034, Helioparc, 2, rue Pr. Angot, 64053 Pau-Pyrénées Cedex 9, France. jorge.ruiz@univ-pau.fr
authors.forename: Jorge
authors.initials: J
authors.lastname: Ruiz Encinar