Multicomponent determinations in flow-injection systems with square-wave voltammetric detection using the kalman filter

✍ Scribed by Caroline A. Scolari; Steven D. Brown

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 568 KB
• Volume: 178
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/s0003-2670(00)86274-1

✦ Synopsis

Electrochemical detection in flow-injection systems has become increasingly popular. Scanning electrochemical methods of detection have received less attention. The use of rapid square-wave voltammetric detection for flow injection is described. Experimental considerations for the use of square-wave voltammetric detection are discussed. Results of the application of this combination are shown for dopamine in 0.28 M sulfuric acid, and for lead(I1) and thallium(I) in 0.9 M nitric acid. A linear, recursive estimator known as the Kalman filter is used to resolve overlapping responses. Empirical models consisting of the square-wave voltammetric responses of single species are used. Results are shown for mixtures of lead(I1) and thallium(I) in 0.9 M nitric acid.