ABTS-Multiwalled Carbon Nanotubes Nanocomposite/Bi Film Electrode for Sensitive Determination of Cd and Pb by Differential Pulse Stripping Voltammetry

作者：Deng, Wenfang; Tan, Yueming; Fang, Zhengfa; Xie, Qingji^*; Li, Yunyong; Liang, Xiaoling; Yao, Shouzhuo

来源：Electroanalysis, 2009, 21(22): 2477-2485.

DOI：10.1002/elan.200900207

• 2,2 '-Azinobis(3-ethylbenzothiazoline-6-sulfonate) diammonium salt (ABTS)
• Multiwalled carbon nanotubes (MWCNTs)
• Bismuth film electrode (BiFE)
• Differential pulse stripping voltammetry (DPSV)
• Pb2+
• Cd2+
• Voltammetry
• Nanotube

A 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonate) diammonium salt (ABTS)-multiwalled carbon nanotubes (MWCNTs) nanocomposite/Bi film modified glassy carbon (GC) electrode was constructed for the differential pulse stripping voltammetric determination of trace Pb2+ and Cd2+. This electrode was more sensitive than ABTS-free Bi/GC and Bi/MWCNTs/GC electrodes. Linear responses were obtained in the range from 0.5 to 35 mu g L-1 for Cd2+ and 0.2 to 50 mu g L-1 Pb(II), with detection limits of 0.2 mu g L-1 for Cd2+ and 0.1 mu g L-1 for Pb2+, respectively. This sensor was applied to the simultaneous detection of Cd2+ and Pb2+ in water samples with satisfactory recovery.

• 出版日期2009-11
• 单位湖南师范大学