RESEARCH ON IMPROVEMENT OF STRIPPING VOLTAMMETRY WITH MODIFIED CARBON NANOTUBES PASTE ELECTRODE BY BISMUTH OXIDE TO DETERMINE TRACE LEVELS OF METALS
Nguyễn Thị Thu Phương
Trịnh Xuân Giản
Abstract
A modified carbon nanotubes paste electrode by bismuth oxide (Bi2O3-CNTPE) in situ wasfabricated and applied in differential pulse anodic Stripping Voltammetry (DP-ASV) todetermine Cd (II), In (III) and Pb (II) amounts in water samples (river water, lake water).The proposed method was validated determining Pb(II) in certified reference marinesediment (MESS-2) with satisfactory results. The method was validated by comparing theresults obtained with those provided by application of the atomic absorption spectrometry.
