Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/20314
Title: Development and study of electrochemical procedures and of modified electrodes for the determination of trace metallic species in solution
Authors: Chen, Bing.
Keywords: DRNTU::Science::Biological sciences::Biochemistry
Issue Date: 1995
Abstract: This thesis describes the development and study of electroanalytical procedures for the determination of trace metallic species in solution. Two major studies are included. In the first study, a square wave stripping voltammetric procedure, utilizing a thin film mercury electrode, was developed and optimized. The procedure was suitable for the determination of Cd, Pb and Cu at the |ig/L concentration level in natural water. The second study included the construction and characterization of graphite paste electrodes which were modified with zeolite molecular sieves. In conjunction with a medium exchange procedure, electrode sensitivity to traces of Cu, Cd and Zn was achieved. Furthermore, the interference effects from Co(II), Pb(II), Ni(II), Al(III), Cd(II), Cu(II), Ag(I) and Hg(II) on the Zn signals were studied. Most notably it was observed that the interference was stronger for species, which had the higher coordination number in solution. This suggests that electrode sensitivity and selectivity were partially governed by the coordination numbers of the metallic species.
URI: http://hdl.handle.net/10356/20314
Rights: NANYANG TECHNOLOGICAL UNIVERSITY
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:NIE Theses

Files in This Item:
File Description SizeFormat 
NIE_THESES_133.pdf
  Restricted Access
15.48 MBAdobe PDFView/Open

Page view(s) 50

345
Updated on Nov 24, 2020

Download(s) 50

1
Updated on Nov 24, 2020

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.