Citation: Shu Ping BI, Gang CHEN. Indirect Differential Pulse Voltammetric Determination of Aluminum by a Pyrocatechol Violet-Modified Electrode[J]. Chinese Chemical Letters, ;1999, 10(3): 247-250. shu

Indirect Differential Pulse Voltammetric Determination of Aluminum by a Pyrocatechol Violet-Modified Electrode

Shu Ping BI ,
Gang CHEN

Department of Chemistry, Naming University, Naming 210093

Received Date: 8 October 1998

Fund Project: This paper is.supported by the Research Funding of the Electroanalytical Chemistry Open Laboratory of Changchun Applied Chemistry Institute, Chinese Academy of Sciences and The Natrual Natural Science Foundations of China and Jiangsu Province.The authors would like to thank Profs.Shimin Zhu and Hongyuan Chen for their support and help.

A PCV-modified electrode was simply prepared by dip-coating a pyrolytic graphite electrode in a NaAc-HAc buffer solution of PCV.The peak currents of differential pulse voltammograms (DPV) decrease with the addition of Al and the peak potentials remain the same.The decreasing of △i_p, is linear with Al concentration in the range of 1×10^-8~ 1×10^-7 mol/L.The detection limit is 5 ×10^-9 mol/L and the relative standard deviation for 4×10^-8 mol/L Al is 2.9% (n=8).No serious interference was found.The determination of Al in water samples is reported.
- Pyrocatechol violet (PCV),
- aluminum,
- chemically modified electrode,
- differentialpulse voltammetry,
- indirect determination,
- drinking water
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