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Proceedings Paper

Amperometric sensor for simultaneous determination of Cd2+ and Pb2+
Author(s): Shengshui Hu; Kangbing Wu; Hongchao Yi; Dafu Cui
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Paper Abstract

In this paper, a kind of amperometric sensors for simultaneous determination of Cd2+ and Pb2+ was investigated. Cd2+ and Pb2+ are firstly deposited on the surface of the sensor at -1.20 V and then reduced. In the following step, reduced Cd and Pb are oxidized by scanning the potential towards a positive direction. The experimental parameters, which influence sensitivity and detection limit, such as supporting electrolyte and pH values, accumulation potential and accumulation time, scan rate, were examined. The mechanism as to the voltammetric response of this sensor was discussed. This sensor has following advantages: easy and convenient fabrication, low cost, low detection limit and fast response. The detection limits are 5 X 10-11 mol/L for Cd2+ and 8 by 10-11 mol/L for Pb2+.

Paper Details

Date Published: 14 September 2001
PDF: 3 pages
Proc. SPIE 4414, International Conference on Sensor Technology (ISTC 2001), (14 September 2001); doi: 10.1117/12.440186
Show Author Affiliations
Shengshui Hu, Wuhan Univ. (China)
Kangbing Wu, Wuhan Univ. (China)
Hongchao Yi, Hubei Agriculture College (China)
Dafu Cui, Institute of Electronics (China)

Published in SPIE Proceedings Vol. 4414:
International Conference on Sensor Technology (ISTC 2001)
Yikai Zhou; Shunqing Xu, Editor(s)

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