Croatica Chemica Acta, Vol. 80 No. 1, 2007.
Original scientific paper
Application of meso-2,3-Dimercaptosuccinic Acid Self-assembled Gold Electrode for Voltammetric Determination of Copper
Pei Dao Ding
Ling Mei Niu
Hong Qun Luo
Nian Bing Li
Abstract
Fabrication and electrochemical characteristics of the meso-2,3-dimercaptosuccinic acid (DMSA)
self-assembled monolayer modified gold electrode were described. The modified electrode exhibited
increased sensitivity and selectivity for CuII compared to the bare gold electrode by
stripping voltammetry and the peak current was proportional to the concentration of CuII in the
range of 8.0 10–7 1.2 10–4 mol/L with the detection limit of 1.1 10–7 mol/L. The influence
of coexistent substances was investigated and the modified electrode showed good selectivity
for copper determination. The DMSA/Au electrode was applied for CuII determination
in a tap water sample with satisfactory results, with the recovery in the range from 99.7 to
101.1 %.
Keywords
meso-2,3-dimercaptosuccinic acid; self-assembled monolayer; copper; stripping voltammetry
Hrčak ID:
12825
URI
Publication date:
11.3.2007.
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