title: Chromatographic Separation of Cd from Plants via Anion-Exchange Resin for an Isotope Determination by Multiple Collector ICP-MS.
abstract: In this study, key factors affecting the chromatographic separation of Cd from plants, such as the resin column, digestion and purification procedures, were experimentally investigated. A technique for separating Cd from plant samples based on single ion-exchange chromatography has been developed, which is suitable for the high-precision analysis of Cd isotopes by multiple-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). The robustness of the technique was assessed by replicate analyses of Cd standard solutions and plant samples. The Cd yields of the whole separation process were higher than 95%, and the114/110Cd values of three Cd second standard solutions (Münster Cd, Spex Cd, Spex-1 Cd solutions) relative to the NIST SRM 3108 were measured accurately, which enabled the comparisons of Cd isotope results obtained in other laboratories. Hence, stable Cd isotope analyses represent a powerful tool for fingerprinting specific Cd sources and/or examining biogeochemical reactions in ecological and environmental systems.
authors.affiliation: Center for Environmental Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences.
authors.forename: Rongfei
authors.initials: R
authors.lastname: Wei
authors.forename: Qingjun
authors.initials: Q
authors.lastname: Guo
authors.forename: Hanjie
authors.initials: H
authors.lastname: Wen
authors.forename: Marc
authors.initials: M
authors.lastname: Peters
authors.forename: Junxing
authors.initials: J
authors.lastname: Yang
authors.forename: Liyan
authors.initials: L
authors.lastname: Tian
authors.forename: Xiaokun
authors.initials: X
authors.lastname: Han