title: Chemical plume tracking. 3. Ascorbic acid: a biologically relevant marker.
abstract: Dynamic characteristics of the amperometric sensing system for tracking of turbulent chemical plumes have been studied. The correlation analysis requires that such sensors respond rapidly and have long-term stability and minimal or low-flow sensitivity. Moreover, for practical purposes, such sensors must respond to an electrochemical marker that would be found in or at least be compatible with the diet of marine animals. Ascorbic acid is such a compound and can be electrochemically oxidized. Its long-term dynamic behavior on several types of electrodes has been studied. It has been found that a Pt electrode coated with polyaniline satisfies all the above requirements. However, this system has a peculiar dynamic behavior that affects the results of the correlation analysis, namely, at the higher frequencies. The behavior of such system in the virtual plume setup has been characterized and its usability for detection of fluctuating concentration of ascorbic acid in saline solution has been confirmed.
authors.affiliation: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta 30332-0400, USA.
authors.forename: Timo
authors.initials: T
authors.lastname: Kikas
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ishida
authors.forename: Jirí
authors.initials: J
authors.lastname: Janata
mesh_terms: D000818:Animals; D001205:Ascorbic Acid / Q000737:chemistry* / Q000378:metabolism; D001522:Behavior, Animal; D015415:Biomarkers; D004566:Electrodes; D004867:Equipment Design; D005502:Food; D012903:Smell
chemical_list: D015415:Biomarkers; D001205:Ascorbic Acid