Separation and preconcentration trace amounts of gold by using modified organo nanoclay closite 15A

Química Nova

Sayed Zia Mohammadi²  Naimeh Seifollahi²  Daryoush Afzali¹ 

[1] ,Payame Noor University Department of Chemistry Kerman,Iran

关键词: nanoclay;    preconcentration;    gold determination;   

DOI  :  10.1590/S0100-40422010000700013

来源: SciELO

【 摘 要 】

The application of organo nanoclay 5-(4-dimethylamino-benzylidene) rhodanine-immobilized as a new, easily prepared, and stable solid sorbent for preconcentration trace amounts of Au(III) ions in aqueous solution is presented. The sorption of Au(III) ions was quantitative in the pH range of 2-4, and quantitative desorption occurred instantaneously with 10.0 mL of a mixture containing 0.5 mol L-1 Na2S2O3 and KSCN. Various parameters, such as the effect of pH, breakthrough volume, extraction time, and interference of a large number of anions and cations have been studied. The proposed method has been applied for determination of trace amount of gold in water samples.

【 授权许可】

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