AN OPTICAL-FIBER VITAMIN-C SENSOR-BASED ON IMMOBILIZED 2,6-DICHLOROINDOPHENOL

Authors
GOODLET G NARAYANASWAMY R
Citation
G. Goodlet et R. Narayanaswamy, AN OPTICAL-FIBER VITAMIN-C SENSOR-BASED ON IMMOBILIZED 2,6-DICHLOROINDOPHENOL, Measurement science & technology, 5(6), 1994, pp. 667-670
Citations number
7
Categorie Soggetti
Instument & Instrumentation",Engineering
Journal title
Measurement science & technology → ACNP
ISSN journal
09570233
Volume
5
Issue
6
Year of publication
1994
Pages
667 - 670
Database
ISI
SICI code
0957-0233(1994)5:6<667:AOVSOI>2.0.ZU;2-S
Abstract
An optical vitamin C sensing probe has been studied based on immobiliz ed 2,6-dichloroindophenol. A kinetic method is employed in the analyti cal measurement. This optical sensor is shown to respond linearly to v itamin C concentrations in the range 1.6-10 mM at pH 3.0. This linear range varies with pH and temperature, which should be controlled when using the sensor for analysis of vitamin C. A good analytical correlat ion has been demonstrated for the analysis of vitamin C in samples of orange juice.