2005 Volume 59 Issue 4 Pages 267-272
Adsorption properties of Co and Ni ions were studied with chelating cellulose (Chelest Fiber IRY) containing imminodiacetate fragment as the chelating group. Both Co and Ni ions were quantitatively adsorbed on the adsorbent at above pH 4.5. The sorption capacity was found to be 1.1 mmol/g and 1.4 mmol/g for Co and Ni, respectively.
The sample solution containing Co and Ni ions was loaded on a column, packed with 1.0 g of Chelest Fiber IRY at the flow rate of 20 ml/min (SV=6.7min-1). The height of thecolumn section containing 1.0 g of adsorbent is about 20 mm. The retention of these metals on the adsorbent was not influenced by the flow rate of the sample solution up to 27 ml/min. After washing the column with 30 ml distilled water, the adsorbed metal ions were eluted with 20 ml of 1mol/1 HCl at a flow rate of 5.0 ml/min.The method was applied to the determination of Co and Ni in ground water and solar salt samples. The accuracy of the method was demonstrated by recovery on spiked samples