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

Revista:
Analytica Chimica Acta

ISSN: 0003-2670

Any de publicació: 1991

Volum: 255

Número: 1

Pàgines: 113-120

Tipus: Article

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

Altres publicacions en: Analytica Chimica Acta

Resum

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.