%0 Journal Article
%@ 16609336
%A Ajab, H.
%A Khan, A.A.A.
%A Dennis, J.O.
%A Abdullah, M.A.
%D 2014
%F scholars:4805
%I Trans Tech Publications Ltd
%J Applied Mechanics and Materials
%K 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
%P 813-817
%R 10.4028/www.scientific.net/AMM.625.813
%T Bismuth-modified hydroxyapatite carbon electrode for heavy metal detection in biomatrices
%U https://khub.utp.edu.my/scholars/4805/
%V 625
%X 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.
%Z cited By 3; Conference of 3rd International Conference on Process Engineering and Advanced Materials, ICPEAM 2014 ; Conference Date: 3 June 2014 Through 5 June 2014; Conference Code:114811