Chemically modified electrode for the determination of gold - an electrochemical and spectrophotometric study

Iva Turyan; Daniel Mandler

doi:10.1007/BF00323980

Chemically modified electrode for the determination of gold - an electrochemical and spectrophotometric study

Iva Turyan, Daniel Mandler^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The voltammetric determination of trace amounts of gold has been studied using a chemically modified electrode. The role played by the host molecule attached to a glassy carbon electrode (GCE), i.e. 8,9,17,18-dibenzo-1,7-dioxa-10,13,16-triazacyclooctadecane (DDTC), was examined by electrochemical and spectrochemical techniques. Cathodic stripping voltammetry (CSV) was applied to study the various parameters affecting the affinity of gold ions by a DDTC modified electrode as well as the interference by other ions. Finally, the method has been successfully applied to determine gold traces in a geological sample. In addition, the formation of an AuCl₄^--DDTC complex was followed and its formation constant was determined by spectrophotometry.

Original language	English
Pages (from-to)	491-496
Number of pages	6
Journal	Analytical and Bioanalytical Chemistry
Volume	349
Issue number	7
DOIs	https://doi.org/10.1007/BF00323980
State	Published - Jul 1994

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10.1007/BF00323980

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abstract = "The voltammetric determination of trace amounts of gold has been studied using a chemically modified electrode. The role played by the host molecule attached to a glassy carbon electrode (GCE), i.e. 8,9,17,18-dibenzo-1,7-dioxa-10,13,16-triazacyclooctadecane (DDTC), was examined by electrochemical and spectrochemical techniques. Cathodic stripping voltammetry (CSV) was applied to study the various parameters affecting the affinity of gold ions by a DDTC modified electrode as well as the interference by other ions. Finally, the method has been successfully applied to determine gold traces in a geological sample. In addition, the formation of an AuCl4--DDTC complex was followed and its formation constant was determined by spectrophotometry.",

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doi = "10.1007/BF00323980",

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AB - The voltammetric determination of trace amounts of gold has been studied using a chemically modified electrode. The role played by the host molecule attached to a glassy carbon electrode (GCE), i.e. 8,9,17,18-dibenzo-1,7-dioxa-10,13,16-triazacyclooctadecane (DDTC), was examined by electrochemical and spectrochemical techniques. Cathodic stripping voltammetry (CSV) was applied to study the various parameters affecting the affinity of gold ions by a DDTC modified electrode as well as the interference by other ions. Finally, the method has been successfully applied to determine gold traces in a geological sample. In addition, the formation of an AuCl4--DDTC complex was followed and its formation constant was determined by spectrophotometry.

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Chemically modified electrode for the determination of gold - an electrochemical and spectrophotometric study

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