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Reference type: Journal
Authors: Liu ZH, Huan SY, Jiang JH, Shen GL, Yu RQ
Article Title: Molecularly imprinted TiO2 thin film using stable ground-state complex as template as applied to selective electrochemical determination of mercury.
Publication date: 2006
Journal: Talanta
Volume: 68
Issue: (4)
Page numbers: 1120-1125.
DOI: 10.1016/j.talanta.2005.07.014
Alternative URL: http://www.sciencedirect.com/science/article/B6THP-4H87619-9/2/13c18f9fad24b7856c3181cc29d4857e

Abstract: Molecular recognition sites for mercury ions were imprinted in TiO2 film using stable ground-state complex of 1-amino-8-naphtol-3,6-disodium sulfonate (ANDS) and mercury ions as template. The complex ratio between mercury ions and ANDS was estimated to be 2:1. Compared with the controlled and pure TiO2 electrodes, the imprinted electrode revealed selectivity towards the imprinted ions. Linear calibration plots for mercury ions were obtained and the regression equation was Ip (μA) = 4.29 x 10-7 + 19.40 [Hg2+] with a detection limit of 3.06 x 10-9 mol/l. The imprinted electrode could be used for more than 1 month. Recoveries were calculated at both high and low concentrations, with a mean recovery of 99.6%
Template and target information: complex of 1-amino-8-naphthol-3,6-disodium sulfonate with mercury, mercury ion, Hg(II)
Author keywords: imprinted thin film, stable ground-state complex, LSV, sol-gel, sensor


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