Gas generation and preconcentration coupled to gas phase molecular absorption spectrometry: A powerful tool for the simultaneous determination of analytes forming volatile compounds

  1. Galban, J. 2
  2. Cabredo, S. 1
  3. Gallarta, F. 1
  4. Sanz, I. 1
  5. Perez, M. 1
  6. Sanz, J. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

  2. 2 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Revista:
Fresenius' Journal of Analytical Chemistry

ISSN: 0937-0633

Ano de publicación: 1996

Volume: 355

Número: 3

Páxinas: 406-408

Tipo: Artigo

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SCOPUS: 2-s2.0-0030365818 WoS: WOS:A1996UT01900065 GOOGLE SCHOLAR

Outras publicacións en: Fresenius' Journal of Analytical Chemistry

Resumo

Different methods for a simultaneous determination of several analytes forming volatile compounds at room temperature are described. The main steps of these methods are: continuous generation, collection in a cryogenic trap, revolatilization, measurement of the volatile compounds by Gas Phase Molecular Absorption Spectrometry and resolution by multi-wavelength methods. Several mixtures containing 2, 3 or 4 components have been studied: 1) elements forming covalent hydrides; 2) arsenic organometallic compounds forming volatile gases with a similar structure to arsine; and 3) sulphur species that can evolve volatile compounds. Under the optimum conditions obtained for each mixture, detection limits range from 0.8 ng/mL (dimethylarsinic acid) to 2 μg/mL (SCN -). © Springer-Verlag 1996.