Application of meso-2,3-Dimercaptosuccinic Acid Self-assembled Gold Electrode for Voltammetric Determination of Copper

نویسندگان

  • Pei Dao Ding
  • Ling Mei Niu
  • Hong Qun Luo
  • Nian Bing Lia
چکیده

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 %.

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تاریخ انتشار 2007