Section 22
Chapter 21,766

Solid phase extraction of trace metals from environmental samples using Amberlite XAD-7 loaded with 2-hydroxy-propiophenone-4-phenyl-3thiosemicarbazone and determination by inductively coupled plasma-atomic emission spectrometry

Veni, S.S.; Rao, M.M.; Rao, G.P.Chandra; Seshaiah, K.

Toxicological and Environmental Chemistry 89(1-4): 455-464


ISSN/ISBN: 0277-2248
DOI: 10.1080/02772240701206918
Accession: 021765891

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A method for the solid phase extraction of trace metals, namely Co, Cu, Pb, Ni and Zn, from environmental and biological samples using column Amberlite XAD-7 loaded with 2-hydroxypropiophenone-4-phenyl-3-thiosemicarbazone (HPPPTSC) and determination by inductively coupled spectrometry (ICP-AES) has been developed. The reagent has the capacity to form chelate complexes with the metals because of three binding sites in the reagent molecule. The optimum experimental conditions for the quantitative sorption of five metals, pH, effect of flow rate, concentration of eluent, sorption capacity and the effect of diverse ions on the preconcentration. of analytes have been investigated. The sorption capacity of the resin has 83, 127, 35, 88 and 85 mu mol g(-1) for Co2+, CU2+, Pb2+, Ni2+ and Zn2+, respectively. The preconcentration factors for Co2+, Cu2+, Pb2+, Ni2+ and Zn2+ were 100, 110, 120, 140 and 150, respectively. The accuracy of the proposed procedure was evaluated by standard reference materials. The achieved results were in good agreement with certified values. The proposed method was applied for the determination of trace metals in river water and plant leaves.

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