Bismuth-modified hydroxyapatite carbon electrode for heavy metal detection in biomatrices

Ajab, H. and Khan, A.A.A. and Dennis, J.O. and Abdullah, M.A. (2014) Bismuth-modified hydroxyapatite carbon electrode for heavy metal detection in biomatrices. Applied Mechanics and Materials, 625. pp. 813-817.

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Abstract

Micro-analytical based sensors with complex biomatrices such as blood, urine, or saliva are of increasing interest in health-care sector because of their sensitivity, selectively and simplicity. A modified carbon electrode with hydroxyapatite (HAp) and Bismuth (II) was developed to detect Pb2+ concentration in blood sera from healthy persons. Square wave anodic stripping voltammetry was used for the detection of Pb2+ by the interacting capability of the Bi film and HAp on the electrode surface with the optimised parameters of deposition time 240sec, deposition potential �1.0 V in 0.1M acetate buffer followed by square wave potential scan from -1.0 V to -0.2V. Bi film deposited HAp-CME showed attractive electrochemical characteristics with high sensitivity for Pb2+. Clear current peaks for different Pb2+ concentrations were observed around -0.55V, with favourable signal-to-background ratio, and comparatively free from oxygen interferences. © 2014 Trans Tech Publications, Switzerland.

Item Type: Article
Impact Factor: cited By 1
Uncontrolled Keywords: Bismuth; Blood; Body fluids; Carbon; Deposition; Electrochemical electrodes; Electrochemical sensors; Heavy metals; Hydroxyapatite; Voltammetry, Blood serum; Carbon electrode; Deposition potential; Electrochemical characteristics; Heavy metal detection; Hydroxyapatite (HAp); Signal-to-background ratio; Square wave anodic stripping voltammetry, Electrodes
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 29 Mar 2022 04:04
Last Modified: 29 Mar 2022 04:04
URI: http://scholars.utp.edu.my/id/eprint/31999

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