DEVELOPMENT OF A NEW METHOD FOR THE DETERMINATION OF ARSENIC IN BABY FORMULAS BY USING EXTRACTION METHOD


GUNDOGDU O., Ay U.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.22, ss.3584-3587, 2013 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 22 Konu: 12
  • Basım Tarihi: 2013
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Sayfa Sayısı: ss.3584-3587

Özet

The determination of arsenic in five different extraction environments (acetic acid, EDTA, NaOH, MeOH/H2O, acetonitrile) from baby formulas sold in the market was tested. Total arsenic contents were analyzed with Flow Injection-Hydride Generation-Atomic Absorption Spectrometry (FI-HG-AAS) and Graphite Furnace-Atomic Absorption Spectrometry (GF-AAS) after digestion of samples with nitric acid using a microwave sample digestion system. In order to verify accuracy and certainty of the analytical method applied, soy flours known as FAPAS 770 and FAPAS 787 were used as standard reference materials. The most efficient extraction was achieved with 5M NaOH (recovery rate > 98 %).