Published 2000

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Publication details

Journal : Journal of AOAC International , vol. 83 , p. 1423–1428 , 2000

International Standard Numbers :
Printed : 1060-3271
Electronic : 1944-7922

Publication type : Academic article

Contributors : Julshamn, Kaare; Thorlacius, Arngrímur; Lea, Per

Issue : 6

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Kjetil Aune
Chief Librarian


Eight laboratories participated in an interlaboratory method performance (collaborative) study of a method for the determination of arsenic in foodstuffs of marine origin by electrothermal atomic absorption spectrometry after wet digestion using a microwave oven technique. The study was preceded by a practice round of familiarization samples. The method was tested on 8 materials (cod roe, krill, blue mussel, saithe, scampi, cod fillet, shrimp, and cod extract) ranging in As content from 2 to 75 mg/kg. The materials were sent to participants in the study as blind duplicates, and the participants were asked to perform single determinations on each sample. Repeatability relative standard deviations (RSDr) for As ranged from 6.8 to 17.4%. Reproducibility relative standard deviations (RSDR) ranged from 7.6 to 24%. The highest RSDR value was found for the sample with the highest concentration of As.