Double Deposition and Stripping Steps for Trace Determination of Au(III) Using Anodic Stripping Voltammetry

A new way of decreasing the detection limit ‐ double deposition and stripping steps was proposed to determine trace amounts of gold(III) by anodic stripping voltammetry. Two carbon composite electrodes that differed drastically in their surface areas were used for the measurements. The calibration g...

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Bibliographic Details
Published in:Electroanalysis (New York, N.Y.) N.Y.), 2015-10, Vol.27 (10), p.2486-2491
Main Authors: Rutyna, Iwona, Ochab, Mateusz, Korolczuk, Mieczysław
Format: Article
Language:English
Subjects:
Anodic stripping
Calibration
Carbon
Deposition
Determination
Double deposition
Electrodes
Gold
Stripping
Stripping voltammetry
Surface area
Voltammetry
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Summary:A new way of decreasing the detection limit ‐ double deposition and stripping steps was proposed to determine trace amounts of gold(III) by anodic stripping voltammetry. Two carbon composite electrodes that differed drastically in their surface areas were used for the measurements. The calibration graph was linear from 1×10−9 to 1×10−8 mol L−1 following deposition time of 300 s at the first and the second electrode. The detection limit was found to be 2.3×10−10 and 1.4×10−11 mol L−1 for deposition time 600 and 2400 s, respectively. It is the lowest detection limit obtained so far for gold(III) determination in stripping voltammetry.
ISSN:1040-0397
1521-4109
DOI:10.1002/elan.201500215