BUNSEKI KAGAKU
Print ISSN : 0525-1931
Annual Topic “photo” : Research Papers
Optical Dissolved Oxygen Sensor Consisting of Microsphere Gel Incorporated with Tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II)
Kazutake TAKADAYuri KURAMOCHINami NUMATAYuri USAMITakashi YASUIAkio YUCHI
Author information
JOURNALS FREE ACCESS

Volume 67 (2018) Issue 1 Pages 27-36

Details
Download PDF (1452K) Contact us
Abstract

A dissolved oxygen sensor consisting of a poly(acrylamide-co-methacrylic acid) microsphere gel and tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ([Ru(Ph2phen)3]2+) was developed. This sensor determines dissolved oxygen based on the quenching of the fluorescence (peak wavelength: 615 nm) of the Ru complex in microsphere gels that are immobilized on an ITO substrate in the presence of oxygen. The extinction ratio, defined as the ratio of the fluorescence intensity in a solution saturated with oxygen gas to that saturated with nitrogen gas, appeared to be independent of the film condition (62±7 %). A Stern-Volmer plot showed an excellent relationship between the fluorescent intensity and the oxygen concentration with R2 being higher than 0.95; the Ksv value was found to be 0.036 - 0.053. The determination of the dissolved oxygen concentration in a real sample (tap water) showed a relative error of at most 14 % to a commercially available sensor.

Information related to the author
© The Japan Society for Analytical Chemistry 2018
Previous article Next article

Recently visited articles
feedback
Top