Determination of Thiomersal by Flow Injection coupled with Microwave-Assisted Photochemical Online Oxidative Decomposition of Organic Mercury and Cold Vapor Atomic Fluorescence Spectroscopy (Articolo in rivista)

Type
Label
  • Determination of Thiomersal by Flow Injection coupled with Microwave-Assisted Photochemical Online Oxidative Decomposition of Organic Mercury and Cold Vapor Atomic Fluorescence Spectroscopy (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.aca.2013.10.018 (literal)
Alternative label
  • B.Campanella, M. Onor, A. D'Ulivo, C. Ferrari, M.C. Mascherpa, E. Bramanti (2013)
    Determination of Thiomersal by Flow Injection coupled with Microwave-Assisted Photochemical Online Oxidative Decomposition of Organic Mercury and Cold Vapor Atomic Fluorescence Spectroscopy
    in Analytica chimica acta (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • B.Campanella, M. Onor, A. D'Ulivo, C. Ferrari, M.C. Mascherpa, E. Bramanti (literal)
Pagina inizio
  • 66 (literal)
Pagina fine
  • 69 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 804 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
  • Scopus (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ICCOM Pisa INO Pisa (literal)
Titolo
  • Determination of Thiomersal by Flow Injection coupled with Microwave-Assisted Photochemical Online Oxidative Decomposition of Organic Mercury and Cold Vapor Atomic Fluorescence Spectroscopy (literal)
Abstract
  • We developed a flow injection (FI) method for the determination of thiomersal (sodium ethylmercurithiosalicylate, C9H9HgNaO2S) based on the UV/microwave (MW) photochemical, online oxidation of organic mercury, followed by cold vapor generation atomic fluorescence spectrometry (CVG-AFS) detection. Thiomersal was quantitatively converted in the MW/UV process to Hg(II), with a yield of 97 ± 3%. This reaction was followed by the reduction of Hg(II) to Hg(0) performed in a knitted reaction coil with NaBH4 solution, and AFS detection in an Ar/H2 miniaturized flame. The method was linear in the 0.01 - 2 ?g mL-1 range , with a LOD of 0.003 ?g mL-130 . This method has been applied to the determination of thiomersal in ophthalmic solutions, with recoveries ranging between 97 and 101 %. We found a mercury concentration in commercial ophthalmic solutions ranging between 7.5 and 59.0 ?g mL-1 . (literal)
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