FIBEROPTIC SENSOR WITH A DYE-MODIFIED CHITOSAN POLY(VINYL ALCOHOL) CLADDING FOR THE DETERMINATION OF ORGANIC-ACIDS

Authors
KURAUCHI Y OGATA T EGASHIRA N OHGA K
Citation
Y. Kurauchi et al., FIBEROPTIC SENSOR WITH A DYE-MODIFIED CHITOSAN POLY(VINYL ALCOHOL) CLADDING FOR THE DETERMINATION OF ORGANIC-ACIDS, Analytical sciences, 12(1), 1996, pp. 55-59
Citations number
10
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical sciences → ACNP
ISSN journal
09106340
Volume
12
Issue
1
Year of publication
1996
Pages
55 - 59
Database
ISI
SICI code
0910-6340(1996)12:1<55:FSWADC>2.0.ZU;2-6
Abstract
Organic acids in aqueous solution were determined with a fiber-optic s ensor having a chitosan/poly(vinyl alcohol) cladding. Interference fro m ethanol could be reduced by controlling the crosslinking of the clad ding with glutaraldehyde and by modifying the cladding with 5',5 ''-di bromopyrogallolsulfonphthalein. The response time for 5v/v% acetic aci d was within 1 min and the RSD was ca. 2% for 10 successive measuremen ts. Coating of the cladding with an amorphous fluoropolymer increased its durability and removed interferences from inorganic acids and non- volatile compounds.