Direct determination of mercury at the sub-picogram per gram level in polar snow and ice by ICP-SFMS. (Articolo in rivista)

Type
Label
  • Direct determination of mercury at the sub-picogram per gram level in polar snow and ice by ICP-SFMS. (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1039/b402711f (literal)
Alternative label
  • F. A. M. Planchon, P. Gabrielli, P. A. Gauchard, A. Dommergue, C. Barbante, W. R. L. Cairns, G. Cozzi, S. A. Nagorski, C. P. Ferrari, C. F. Boutron, G. Capodaglio, P. Cescon, A. Varga, E. W. Wolff. (2004)
    Direct determination of mercury at the sub-picogram per gram level in polar snow and ice by ICP-SFMS.
    in Journal of analytical atomic spectrometry (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • F. A. M. Planchon, P. Gabrielli, P. A. Gauchard, A. Dommergue, C. Barbante, W. R. L. Cairns, G. Cozzi, S. A. Nagorski, C. P. Ferrari, C. F. Boutron, G. Capodaglio, P. Cescon, A. Varga, E. W. Wolff. (literal)
Pagina inizio
  • 823 (literal)
Pagina fine
  • 830 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 19 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Venice, CNR, Inst Dynam Environm Proc, I-30123 Venice, Italy CNRS, Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France Univ Venice, Dept Environm Sci, I-30123 Venice, Italy Univ Grenoble 1, Inst Univ France, F-38041 Grenoble, France Univ Grenoble 1, Unite Format & Rech Phys, F-38041 Grenoble, France Univ Grenoble 1, Observ Sci Univ, Inst Univ France, F-38041 Grenoble, France British Antarctic Survey, Cambridge CB3 0ET, England (literal)
Titolo
  • Direct determination of mercury at the sub-picogram per gram level in polar snow and ice by ICP-SFMS. (literal)
Abstract
  • n analytical method for the direct determination of mercury (Hg) in polar snow and ice cores and surface snow based on inductively coupled plasma sector field mass spectrometry (ICP-SFMS) has been developed. Various Hg isotopes, such as Hg-199, Hg-200, Hg-201 and Hg-202, appear to be free of polyatomic interferences in such matrices and allow the measurements to be made in low resolution mode, leading to high sensitivity. Ultra-low concentration Hg standards (from 1.5 to 20 pg g(-1)) were used for the calibration of the Thermo Finnigan MAT Element2, and a detection limit as low as 0.18 pg g(-1) was achieved using Hg-202. Ultra-clean procedures used from field sampling to final laboratory analysis show no significant blank contributions and appear suitable for the reliable determination of Hg at ultra-low concentrations. Precision of the Hg measurements was estimated to be 15% in terms of relative standard deviation on five replicates and accuracy was checked with an analytical reference material (102% recovery). Hg concentrations in surface snow samples from the Northern Hemisphere collected in the Canadian Arctic and in Svalbard (Norway) show high variability (1.2-32.0 pg g-(1)). In Antarctica, Hg was determined in different ice core sections from Dome C, spanning the last 18000 years BP (range from 0.7 to 3.2 pg g(-1)), and in snow samples from Coats Land covering the last 150 years (range from 0.2 to 16.1 pg g(-1)). (literal)
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