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Open digestion under reflux for the determination of total arsenic in seafood by inductively coupled plasma atomic emission spectrometry with hydride generation

Authors
Journal
Talanta
0039-9140
Publisher
Elsevier
Publication Date
Volume
66
Issue
4
Identifiers
DOI: 10.1016/j.talanta.2005.01.005
Keywords
  • Seafood
  • Arsenic Determination
  • Wet Digestion
  • Hydride Generation
  • Icp-Aes

Abstract

Abstract A method for the determination of arsenic (As) in seafood by inductively coupled plasma atomic emission spectrometry with continuous hydride generation is described. Several analytical parameters have been investigated and optimised. The analytical features of the method (recovery, precision, accuracy and limit of detection) were calculated. Practical detection limit of 3.6 μg/kg fresh weight for As has been reached. The precision of the method expressed as relative standard deviation (R.S.D.) was in the range of 2.7–3.7% and the recovery percentage ranged from 98.4 to 101.8%. The reliability of the developed method was checked by analysing several certified reference materials. A complete mineralization was obtained for arsenobetaine (AsB) containing reference material with a mixture of nitric and sulphuric acids followed by adding hydrogen peroxide in an open digestion system. This method can be applied to routine analysis without any risks of interferences.

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