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Title: Solid Phase Extraction of Copper, Cadmium and Lead using Amberlite XAD-4 Resin Functionalized with 2-Hydroxybenzaldehyde Thiosemicarbazone and its Application on Green Tea Leaves
Authors: Didarul A. Chowdhury, Md. Ikram ul Hoque*, Zeenath Fardous
Issue Date: 2013
Publisher: Deanship of Research and Graduate Studies , Yarmouk University, Irbid , Jordan
Description: Amberlite XAD resins have attracted much attention of researchers in the last few years for their capability to accommodate important chelating groups. The modified resins act as solid phase extractants (SPE) for pre-concentration and determination of environmentally important metal ions. A new chelating resin; XAD-4 functionalized with 2-hydroxybenzaldehyde thiosemicarbazone was synthesized and studied for solid phase extraction of Cu2+, Cd2+, and Pb2+ from aqueous media and subsequent determination by GFAAS. Application of the developed SPE to the determination of the three metal ions in tea leave digests provided acceptable concentration values. The optimum values for pH, flow rate, acid concentration, tolerance limit for foreign electrolytes, detection limits, limits of quantification, maximum adsorption capacity and sorption half time (t1/2) were evaluated. The methodology involving the modified resin exhibited a high preconcentration factor and low relative standard deviation for determination of Cu2+, Cd2+, and Pb2+. The extraction medium is highly stable and is reusable after slight conditioning.
Appears in Collections:Journal of Chemistry

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