Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0003-2670(01)01396-4
Title: Differential pulse voltammetric determination of trace Te(IV) at a poly(3,3′-diaminobenzidine) film modified gold electrode in flow systems
Authors: Khoo, S.B. 
Ye, R.
Keywords: Differential pulse anodic voltammetry
Flow methods
Gold electrode
Medium exchange
Poly(3,3′-diaminobenzidine) film
Trace tellurium determination
Issue Date: 25-Feb-2002
Citation: Khoo, S.B., Ye, R. (2002-02-25). Differential pulse voltammetric determination of trace Te(IV) at a poly(3,3′-diaminobenzidine) film modified gold electrode in flow systems. Analytica Chimica Acta 453 (2) : 209-220. ScholarBank@NUS Repository. https://doi.org/10.1016/S0003-2670(01)01396-4
Abstract: Electropolymerization of 3,3′-diaminobenzidine on a gold surface gave an adherent, stable film of poly(3,3′-diaminobenzidine) (PDAB). This polymer film retained the complexational functionalities of its monomer, demonstrating preconcentration abilities for several ions, including Se(IV) and Te(IV). In particular, in this work, continuous flow and flow injection methods were developed for the sensitive and selective determination of Te(IV). The optimized method for the continuous flow mode had a detection limit of 5.6 × 10-9 moll-1 for 10min preconcentration. Typical relative standard deviations for six consecutive determinations were 1.82 and 2.56% for Te(IV) concentrations of 1.0 × 10-6 and 5.0 × 10-8 moll-1, respectively (10min preconcentration). The method was applied to the determination of Te(IV) in real samples. © 2002 Elsevier Science B.V. All rights reserved.
Source Title: Analytica Chimica Acta
URI: http://scholarbank.nus.edu.sg/handle/10635/93588
ISSN: 00032670
DOI: 10.1016/S0003-2670(01)01396-4
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