Issue 9, 2018

Electrochemical Hg2+ detection at tannic acid-gold nanoparticle modified electrodes by square wave voltammetry

Abstract

We report the electrochemical sensing of Hg2+ based on tannic acid capped gold nanoparticle (AuNP@TA) complexes. At optimal conditions using square wave voltammetry, the presented analytical method exhibits a “measurable lower limit” of 100.0 fM. This limit is considerably below the permissible level of 30.0 nM for inorganic mercury in drinking water, specified by the World Health Organization (WHO). The effect of potentially interfering ions, such as Zn2+ and Al3+, was studied and results indicate an excellent selectivity for Hg2+. The transfer of the proposed strategy onto AuNP@TA modified screen-printed electrodes demonstrates its applicability to routine monitoring of Hg2+ in tap water.

Graphical abstract: Electrochemical Hg2+ detection at tannic acid-gold nanoparticle modified electrodes by square wave voltammetry

Supplementary files

Article information

Article type
Paper
Submitted
19 Marts 2018
Accepted
06 Apr. 2018
First published
07 Apr. 2018

Analyst, 2018,143, 2035-2041

Electrochemical Hg2+ detection at tannic acid-gold nanoparticle modified electrodes by square wave voltammetry

A. L. Suherman, S. Kuss, E. E. L. Tanner, N. P. Young and R. G. Compton, Analyst, 2018, 143, 2035 DOI: 10.1039/C8AN00508G

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