1 Ocak 2018 Dergi makalesi Açık Erişim

Dogan, Canan Ekinci

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    <subfield code="a">NOVEL FUNCTIONALIZED SOLID PHASE FOR PRECONCENTRATION AND DETERMINATION OF TRACE Cu(II), Fe(III), Zn(II) AND Pb(II) FROM WATER SAMPLES USING FAAS</subfield>
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    <subfield code="a">A new solid-phase extractant was prepared by immobilizing diethyldithiophosphate on silica gel for the separation/preconcentration of traces of Cu(II), Fe(III), Zn(II) and Pb(II) prior to their determination by flame atomic absorption spectrometry (FAAS). The effects of analytical parameters, including the pH of the solution, the shaking time, the eluent concentration and volume, the sample flow rate and potentially interfering ions, were optimized using batch and column procedures. A high preconcentration factor (100-200) was obtained for trace metals and the adsorption capacities of the sorbent were found in the range of 0.065 to 0.877 mmol g(-1) for all the elements. The detection limits of the analyte ions (k =3, n= 21) ranged from 0.45 to 1.17 mu g L-1 for the metal ions. The accuracy of the method was confirmed by analyzing a certified reference material (NIST 1643e; Trace Elements in Water) and spiked water samples. The method was successfully applied to the determination of metal ions in sea, tap and drinking water.</subfield>
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