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Title: Novel polymer-modified electrodes for batch injection sensors and application to environmental analysis
Authors: Brett, Christopher M. A. 
Fungaro, Denise A. 
Morgado, José M. 
Gil, M. Helena 
Keywords: Anodic stripping voltammetry; Polymer-coated electrodes; Batch injection analysis; Environmental electroanalysis
Issue Date: 1999
Citation: Journal of Electroanalytical Chemistry. 468:1 (1999) 26-33
Abstract: Various polymer coatings have been investigated for the protection of mercury thin-film electrodes in the square wave anodic stripping voltammetry of environmental samples using batch injection analysis, with injection of untreated samples of volume 50 [mu]l directly over the sensing electrode. Polymer coatings studied include those with controlled porosity, and cation-exchange polymers based on sulphonated polymers. Of the polymers tested, films of ca. 1 [mu]m thickness made from Nafion® mixed with 5% poly(vinyl sulphonic acid) were found to give the best results in tests with the model surfactants Triton-X-100 detergent, sodium dodecyl sulphate and protein standard. The validity of the approach is demonstrated by application to real samples.
DOI: 10.1016/S0022-0728(99)00061-3
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

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