Classification of multiple defect concentrations in white wine by platinum microelectrode voltammetry
2007 (English)In: Sensors and actuators. B, Chemical, ISSN 0925-4005, Vol. 125, no 2, 462-467 p.Article in journal (Refereed) Published
Concentrations of defect pairs added to a white wine were classified by voltammetric measurements on interdigitated platinum microelectrodes using principal component analysis of the current responses. Combinations of 0, 1, 2 and 3 mM concentrations were investigated. The defect pair ascorbic acid/acetaldehyde exhibited little interaction with each other and the pair-wise concentrations were symmetrically positioned in a score plot around a center axis of equimolar concentrations. The ascorbic acid/sulfur dioxide pair exhibited a center axis for the equimolar concentrations shifted toward the 3 mM sulfur dioxide sample. The defect pair having the strongest interaction through complex formation, acetaldehyde/sulfur dioxide, had the equimolar concentrations in score plots located near the white wine control sample. © 2007 Elsevier B.V. All rights reserved.
Place, publisher, year, edition, pages
2007. Vol. 125, no 2, 462-467 p.
IdentifiersURN: urn:nbn:se:liu:diva-39611DOI: 10.1016/j.snb.2007.02.040Local ID: 50226OAI: oai:DiVA.org:liu-39611DiVA: diva2:260460