CALCIUM OPTICAL SENSORS BASED ON LIPOPHILIC ANIONIC DYE AND CALCIUM-SELECTIVE ORGANOPHOSPHATE IONOPHORE OR NEUTRAL CARRIER

Authors
WANG EJ MA L ZHU L STIVANELLO CM
Citation
Ej. Wang et al., CALCIUM OPTICAL SENSORS BASED ON LIPOPHILIC ANIONIC DYE AND CALCIUM-SELECTIVE ORGANOPHOSPHATE IONOPHORE OR NEUTRAL CARRIER, Analytical letters, 30(1), 1997, pp. 33-44
Citations number
21
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical letters → ACNP
ISSN journal
00032719
Volume
30
Issue
1
Year of publication
1997
Pages
33 - 44
Database
ISI
SICI code
0003-2719(1997)30:1<33:COSBOL>2.0.ZU;2-9
Abstract
Lipophilic anionic dichlorofluorescein ester was examined as a chromop hore for the development of polymeric film based optical sensors for c alcium. A calcium organophosphate salt and a neutral ionophore were em ployed as the active component for calcium sensing. The response pH, d ynamic range, detection limit and selectivities are governed by the ca lcium carrier as well as the membrane plasticizer. The membrane that u ses the anionic chromophore and the calcium organophosphate salt respo nds to calcium in the range of 1.0 x 10(-6) to 0.2 M at pH 7.4.