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Citation: WANG Li, WANG Fang, DONG Le, CAI Hui-Nong. Flow Injection Amperometry Applied to Determination of Iodide in Dry Edible Seaweed[J]. Chinese Journal of Applied Chemistry, ;2008, 25(7): 868-870. shu

Flow Injection Amperometry Applied to Determination of Iodide in Dry Edible Seaweed

WANG Li ^a,, ,
WANG Fang ^b ,
DONG Le ^b ,
CAI Hui-Nong ^a

1.
a School of Biotechnology, Jimei University, Xiamen 361021;
2.
b Chemistry and Life Science School, Quanzhou Teachers College, Quanzhou

Corresponding author: WANG Li,
Received Date: 4 July 2007
Available Online: 30 September 2007
Fund Project: 中国博士后科学基金资助项目(2005037567) (2005037567)福建省青年创新基金资助项目(2006F3113) (2006F3113)福建省教育厅基金资助项目(2007F5076) (2007F5076)福建省自然科学基金高校专项基金资助项目(2007J0369) (2007J0369)集美大学预研基金资助项目(C60618) (C60618)

The electrode modified by multilayer films of polyoxometalate (POM) K₁₇[Ce(P₂Mo₁₇O₆₁)₂]and polyelectrolyte by means of layer-by-layer assembly was prepared and investigated.The stable multilayer films were assembled by alternate adsorption of negatively charged POM and positively charged polyelectrolyte from their aqueous dispersions.The proposed novel electrode exhibited a good electrocatalytic oxidation on I^- anions in solution.Based on this,flow injection amperometry was proposed for the determination of iodide.By the flow injection amperometry (FIA),there existed a good linear relationship between the concentration of iodide and the response current in a range of 1×10^-5 mol/L and 1×10^-3 mol/L,and the detection limit was 5×10^-5 mol/L.The method has been successfully applied to the determination of iodide in dry edible seaweed.The concentrations of iodide measured by this method are in good agreement with those obtained by spectrophotometric method.
- polyoxometalate,
- flow injection amperometry (FIA),
- ultrathin multilayer film,
- electrochemical behavior
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