Fiber optic potassium ion sensor

Details Fiber optic potassium ion sensor Fiber optic potassium ion sensor

1990-11-07

1992-10-13

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

422 8205, 422 8206, 422 8208, 128634, 356 39, 436 79, 436805, 549352, G01N 2164, G01N 3320, A61B 500

Patent

active

051548909

ABSTRACT:
A sensor (10) is provided for detecting the concentration of potassium ions which comprises a molecule which selectively complexes potassium ions. The molecule, e.g., 2,2-bis(3,4-(15-crown-5)-2-nitrophenylcarbamoxymethyl)tetradecanol-14, has at least one binding site and is provided with a fluorophore group, e.g., Rhodamine-B, at that site. The molecule is one that expands upon complexation of potassium ions, such that the intensity of fluorescence increases. The change in fluorescent intensity is a direct measure of the concentration of potassium ions. A detector employing the sensor is also provided.

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Tarcali et al. "In Vivo Measurement with a Potassium Ion-Selective Microelectrode Base a New Bis(Crown Ether)" Anal. Chim. Acta, 1985, 178, 231-237.
Gehrich et al. "Optical Fluorescence and Its Application to an Intravascular Blood Gas Monitoring System" IEEE Trans. Biomedical Engineering, 1986, BME-33, 117-131.
Wolfbeis et al. "Optical Sensors: An Ion-Selective Optrode for Potassium", Anal. Chim. Acta, 1987, 198, 1-12.

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