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Electrochemical detection and removal of lead in water using poly(propylene imine) modified re-compressed exfoliated graphite electrodes

Ndlovu, Thabile and Arotiba, Omotayo A and Sampath, Srinivasan and Krause, Rui W and Mamba, Bhekie B (2011) Electrochemical detection and removal of lead in water using poly(propylene imine) modified re-compressed exfoliated graphite electrodes. In: Journal of Applied Electrochemistry, 41 (12). pp. 1389-1396.

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Abstract

Modification of exfoliated graphite (EG) electrode with generation 2 poly(propylene imine) dendrimer by electrodeposition resulted in an electrochemical sensor which was used to detect lead ions in water to a limit of 1 ppb and a linear response between 2.5 and 40 ppb using square wave anodic stripping voltammetry (SW-ASV). Pb(II) was also removed from spiked water sample using a 40-mm diameter unmodified EG electrode with an applied potential of -1,000 mV for 180 min. A removal efficiency of 99% was calculated from a 150 mL sample. The results obtained in both cases using SW-ASV, correlated with atomic absorption spectroscopy.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Keywords: Exfoliated graphite;Lead;Poly(propylene imine) dendrimer; Square wave anodic stripping voltammetry;Water
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 10 Jan 2012 12:27
Last Modified: 10 Jan 2012 12:27
URI: http://eprints.iisc.ernet.in/id/eprint/43111

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