Automation of voltammetric measurements by polarographic analyser PAR 384B

Omanović, Dario; Branica, Marko (1998) Automation of voltammetric measurements by polarographic analyser PAR 384B. Croatica Chemica Acta, 71 (2). pp. 421-433. ISSN 0011-1643

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Abstract

A specific software package >>ElectroAnalytical Research Software<< (EARSOFT) for automation of voltammetric measurements using a polarographic analyser PAR 384B connected to a PC computer has been developed. The package enables successful adjustment of PAR 384B for systematic repetitive measurements using a PC. It is particularly advantageous for the experimental data analysis. The EARSOFT implements suitable procedures for automatic electroanalytical measurements such as a standard addition method and pseudopolarography, data processing routines (automatic and manual peak search analysis, baseline correction, polarographic/pseudopolarographic wave logarithmic analysis, linear regression, data smoothing, subtracting, editing, derivation and integration, etc.), as well as data graphic presentation sustaining an overlay up to 50 voltammetric curves (files). Determination of dissolved Cd, Pb and Cu concentrations in groundwater samples by a standard addition method is presented as an example. Determination of dissolved copper(II) species in a seawater sample using the pseudopolarographic approach exemplifies the possibilities of speciation of trace metals in natural water systems. These pseudopolarographic measurements show that copper(II) occurs mainly in the form of inert complexes (> 95%) in the analyzed natural seawater sample.

Item Type:

Article

Uncontrolled Keywords:

anodic-stripping voltammetry; wall-jet electrode; pulse voltammetry; metal speciation; computer; system

Subjects:

NATURAL SCIENCES > Chemistry

Divisions:

Division for Marine and Enviromental Research

Projects: