Details

Autor(en) / Beteiligte

• Khan, Aamir Amanat Ali
• Ajab, Huma
• Abdullah, Mohd Azmuddin
• Dennis, John Ojur

Titel

Bismuth-Modified Hydroxyapatite Carbon Electrode for Heavy Metal Detection in Biomatrices

Ist Teil von

• Applied Mechanics and Materials, 2014-09, Vol.625 (Process and Advanced Materials Engineering), p.813-817

Ort / Verlag

Zurich: Trans Tech Publications Ltd

Erscheinungsjahr

2014

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.