FI-HG-AAS Determination of Inorganic Arsenic in Foodstuffs

Inorganic arsenic in foodstuffs was determined by the FI-HG-AAS.Inorganic arsenic in sample was dissolved and reduced with 20 mL of HCl (1+1) and 1 mL of reductant solution,and the solution was diluted quantitatively to 100 mL to attain to the maximum acidity for hydride generation and AAS determination.Range of linearity was achieved within 50 μg·L-1,and detection limit (3s/k) found was 0.22 μg·L-1.The proposed method was used in the analysis of 6 CRM′s,giving results in consistency with the certified values,and values of RSD′s (n=6) less than 2%.