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    Measurement of the Isotopic Composition of Molybdenum in Geological Samples by MC-ICP-MS using a Novel Chromatographic Extraction Technique

    213230_213230.pdf (1.106Mb)
    Access Status
    Open access
    Authors
    Li, J.
    Liang, X.
    Zhong, L.
    Wang, Xuan-Ce
    Ren, Z.
    Sun, S.
    Zhang, Z.
    Xu, J.
    Date
    2014
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Li, J. and Liang, X. and Zhong, L. and Wang, X. and Ren, Z. and Sun, S. and Zhang, Z. et al. 2014. Measurement of the Isotopic Composition of Molybdenum in Geological Samples by MC-ICP-MS using a Novel Chromatographic Extraction Technique. Geostandards and Geoanalytical Research. 38 (3): pp. 345-354.
    Source Title
    Geostandards and Geoanalytical Research
    DOI
    10.1111/j.1751-908X.2013.00279.x
    ISSN
    1639-4488
    School
    Department of Applied Geology
    Remarks

    This is the accepted version of the following article: Li, J. and Liang, X. and Zhong, L. and Wang, X. and Ren, Z. and Sun, S. and Zhang, Z. et al. 2014. Measurement of the Isotopic Composition of Molybdenum in Geological Samples by MC-ICP-MS using a Novel Chromatographic Extraction Technique. Geostandards and Geoanalytical Research. 38 (3): pp. 345-354., which has been published in final form at http://doi.org/10.1111/j.1751-908X.2013.00279.x

    URI
    http://hdl.handle.net/20.500.11937/32652
    Collection
    • Curtin Research Publications
    Abstract

    A novel preconcentration method is presented for the determination of Mo isotope ratios by multi-collector inductively coupled plasma-mass spectrometry (MC-ICP-MS) in geological samples. The method is based on the separation of Mo by extraction chromatography using N-benzoyl-N-phenylhydroxylamine (BPHA) supported on a microporous acrylic ester polymeric resin (Amberlite CG-71). By optimising the procedure, Mo could be simply and effectively separated from virtually all matrix elements with a single pass through a small volume of BPHA resin (0.5 ml). This technique for separation and enrichment of Mo is characterised by high selectivity, column efficiency and recovery (~ 100%), and low total procedural blank (~ 0.18 ng). A 100Mo-97Mo double spike was mixed with samples before digestion and column separation, which enabled natural mass-dependent isotopic fractionation to be determined with a measurement reproducibility of < 0.09‰ (δ98/95Mo, 2s) by MC-ICP-MS. The mean δ98/95MoSRM 3134 (NIST SRM 3134 Mo reference material; Lot No. 891307) composition of the IAPSO seawater reference material measured in this study was 2.00 ± 0.03‰ (2s, n = 3), which is consistent with previously published values. The described procedure facilitated efficient and rapid Mo isotopic determination in various types of geological samples.

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