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Reference type: Journal
Authors: Bahrami A, Besharati-Seidani A, Abbaspour A, Shamsipur M
Article Title: A highly selective voltammetric sensor for nanomolar detection of mercury ions using a carbon ionic liquid paste electrode impregnated with novel ion imprinted polymeric nanobeads.
Publication date: 2015
Journal: Materials Science and Engineering: C
Volume: 48
Page numbers: 205-212.
DOI: 10.1016/j.msec.2014.12.005
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0928493114008030

Abstract: This work reports the preparation of a voltammetric sensor for selective recognition and sensitive determination of mercury ions using a carbon ionic liquid paste electrode (CILE) impregnated with novel Hg2 +-ion imprinted polymeric nanobeads (IIP) based on dithizone, as a suitable ligand for complex formation with Hg2 + ions. The differential pulse anodic stripping voltammetric technique was employed to investigate the performance of the prepared IIP-CILE for determination of hazardous mercury ions. The designed modified electrode revealed linear responses in the ranges of 0.5 nM - 10 nM and 0.08 μM - 2 μM with a limit of detection of 0.1 nM (S / N = 3). It was found that the peak currents of the modified electrode for Hg2 + ions were at a maximum value in phosphate buffer of pH 4.5. The optimized preconcentration potential and accumulation time were to be - 0.9 V and 35 s, respectively. The applicability of the proposed sensor to mercury determination in waste water samples is reported
Template and target information: mercury ion, Hg(II)
Author keywords: Carbon ionic liquid past electrode, Nano-sized ion imprinted polymers, Differential pulse anodic stripping voltammetry, Mercury ion

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