Abstract
The use of a digital versatile disc(DVD)-based Ag electrode for the square-wave anodic stripping voltammetric determination of Pb2+ and Cd2+ was described. The effect of I– on the stripping analysis of Pb2+ and Cd2+ at Ag electrodes was first studied. I– significantly improved the stripping peaks of both Pb2+ and Cd2+. The square-wave voltammetric stripping response was linear over 5―50 μg/L for Pb2+ and Cd2+ with a deposition time of 118 s. The detection limits were 0.2 and 2.6 μg/L for Pb2+ and Cd2+, respectively. The high sensitivity, selectivity, and stability of this DVD-based Ag electrode enabled its practical application for simple, rapid and economical determination of trace levels of Cd2+ and Pb2+ in tap water samples. In addition, detection can be achieved without sample deoxygenation and the electrode can be easily manufactured.
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Supported by the College Students Innovation and Entrepreneurship Training Program, China(No.201610240067).
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Cui, W., Fan, L., Geng, L. et al. A new and facile strategy for determination of lead and cadmium using silver electrodes manufactured from digital versatile discs. Chem. Res. Chin. Univ. 33, 799–803 (2017). https://doi.org/10.1007/s40242-017-7010-4
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DOI: https://doi.org/10.1007/s40242-017-7010-4