Determination of Cd, Cu, Pb and Sb in environmental samples by ICP-AES using polyaniline for separation |
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| Authors: | A C Sahayam |
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| Institution: | (1) National Center for Compositional Characterisation of Materials, ECIL (P.O), Hyderabad – 500062, India e-mail: acs@cccm1.ernet.in, IN |
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| Abstract: | The anion exchange properties of polyaniline for Cd, Cu, Pb and Sb in potassium iodide were studied. The analytes converted
into anionic complexes by KI (0.03–0.96 mol/L) in HCl were adsorbed on polyaniline and eluted with HNO3. The optimum conditions for adsorption and elution were determined. Quantitative recoveries were obtained for Cd, Cu and
Pb, whereas, the recoveries for Sb were about 75%. This separation procedure was used with subsequent ICP-AES determination
for Cd, Cu, and Pb in NIST-coal fly ash (1633b) and a sea plant with an R.S.D of 5% (n = 5).
Received: 13 November 1997 / Revised: 2 February 1998 / Accepted: 7 February 1998 |
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