Potentiometric stripping determination of mercury(II), selenium(IV), copper(II) and lead(II) at a gold film electrode in water samples

A potentiometric stripping method for the determination of Se(IV), Hg(II) at the ng 1 −1 level, which also permits the simultaneous determination of Cu(II) and Pb(II) has been developed. Anodic stripping by an oxidative constant current follows the reductive deposition of the elements in atomic form...

Full description

Saved in:
Bibliographic Details
Published in:Analytica chimica acta 1994-07, Vol.293 (1), p.55-65
Main Authors: Pinilla Gil, Eduardo, Ostapczuk, Peter
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Copper
Electrochemical methods
Exact sciences and technology
Gold film electrode
Lead
Mercury
Potentiometry
Selenium
Waters
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A potentiometric stripping method for the determination of Se(IV), Hg(II) at the ng 1 −1 level, which also permits the simultaneous determination of Cu(II) and Pb(II) has been developed. Anodic stripping by an oxidative constant current follows the reductive deposition of the elements in atomic form at a gold film working electrode. The performance of the method has been checked on a certified reference water sample. The method was adapted to operate on river water samples, and the results of the determination of mercury at low ng 1 −1 level in sea water are also reported. Typical interferences that can occur in water samples are discussed.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(94)00075-1