Simultaneous determination of inorganic arsenic (III) and arsenic (V) by arsine generation and gas-phase molecular absorption spectrometry

  1. Sanz, J. 1
  2. Gallarta, F. 1
  3. Galbán, J. 1
  1. 1 Universidad de Zaragoza
    info

    Universidad de Zaragoza

    Zaragoza, España

    ROR https://ror.org/012a91z28

Zeitschrift:
Analytica Chimica Acta

ISSN: 0003-2670

Datum der Publikation: 1991

Ausgabe: 255

Nummer: 1

Seiten: 113-120

Art: Artikel

DOI: 10.1016/0003-2670(91)85095-A SCOPUS: 2-s2.0-0026004891 GOOGLE SCHOLAR

Andere Publikationen in: Analytica Chimica Acta

Zusammenfassung

A method for the simultaneous determination of inorganic As(III) and As(V) is described, which involves arsine generation, measurement of the molecular absorption of arsine in the gas phase at 190 nm and quantification of As(III) and As(V) based on different heights and areas of absorbance versus time profiles of arsine generated from both inorganic species. The limits of detection were 0.5 μg of As(III) and 3 μg of As(V) in a sample volume of 1 ml. An interference study for both species was made and the method was applied to the determination of As 2O 3 and As 2O 5 in a standard glass sample.