Anodic Stripping Voltammetric Detection of Arsenic(III) at Platinum-Iron(III) Nanoparticle Modified Carbon Nanotube on Glassy Carbon Electrode

作者：Shin Seung Hyun; Hong Hun Gi^*

来源：BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 2010, 31(11): 3077-3083.

DOI：10.5012/bkcs.2010.31.11.3077

• Platinum-iron nanoparticles
• Electrodeposition
• Arsenic
• Multiwalled carbon nanotube
• Anodic stripping voltammetry

The electrochemical detection of As(III) was investigated on a platinum-iron(III) nanoparticles modified multiwalled carbon nanotube on glassy carbon electrode(nanoPt-Fe(III)/MWCNT/GCE) in 0 1 M H(2)SO(4) The nanoPt-Fe(III)/MWCNT/GCE was prepared via continuous potential cycling in the range from -0 8 to 0 7 V (vs Ag/AgCl), in 0 1 M KCl solution containing 0 9 mM K(2)PtCl(6) and 0 6 mM FeCl(3) The Pt nanoparticles and iron oxide were co-electro-deposited into the MWCNT-Nafion composite film on GCE The resulting electrode was examined by cyclic voltammetry (CV), scanning electron microscopy (SEM), and anodic stripping voltammetry (ASV) For the detection of As(III), the nanoPt-Fe(III)/MWCNT/GCE showed low detection limit of 10 nM (0 75 ppb) and high sensitivity of 4 76 mu A mu M(-1), while the World Health Organization's guideline value of arsenic for drinking water is 10 ppb It is worth to note that the electrode presents no interference from copper ion, which is the most serious interfering species in arsenic detection

• 出版日期2010-11-20