skip to main content

Discussion of parameters associated with the determination of arsenic by electrothermal atomic absorption spectrometry in slurried environmental samples

Vassileva, Emilia ; Baeten, Hervé ; Hoenig, Michel

Fresenius' Journal of Analytical Chemistry, 2001, Vol.369(2), pp.159-165 [Peer Reviewed Journal]

Full text available

Citations Cited by
  • Title:
    Discussion of parameters associated with the determination of arsenic by electrothermal atomic absorption spectrometry in slurried environmental samples
  • Author: Vassileva, Emilia ; Baeten, Hervé ; Hoenig, Michel
  • Subjects: Chemistry
  • Is Part Of: Fresenius' Journal of Analytical Chemistry, 2001, Vol.369(2), pp.159-165
  • Description: A slurry sampling – fast program procedure has been developed for the determination of arsenic in plants, soils and sediments by electrothermal atomic absorption spectrometry. Efficiencies of various single and mixed modifiers for thermal stabilization of arsenic and for a better removal of the matrix during pyrolysis step were compared. The influence of the slurry concentration, amounts of modifier and parameters of the pyrolysis step on the As integrated absorbance signals have been studied and a comparison between fast and conventional furnace programs was also made. The ultrasonic agitation of the slurry followed by a fast electrothermal program using an Ir/Mg modifier provides the most consistent performance in terms of precision and accuracy. The reliability of the whole procedure has been compared with results obtained after application of a wet digestion method with an HF step and validated by analyzing eleven certified reference materials. Arsenic detection and quantitation limits expressed on dry sample matter were about 30 and 100 μg kg –1 , respectively.
  • Language: English
  • Identifier: ISSN: 0937-0633 ; E-ISSN: 1432-1130 ; DOI: 10.1007/s002160000632

Searching Remote Databases, Please Wait