Contributions to potassium and ammonium ion-selective optodes based on valinomycin, nonactin, and 1,1-dimethylsila-20-crown-7

Juergen Polster; G. Prestel; M. Wollenweber; P. Czerney

doi:10.1117/12.221748

29 September 1995 Contributions to potassium and ammonium ion-selective optodes based on valinomycin, nonactin, and 1,1-dimethylsila-20-crown-7

Juergen Polster, G. Prestel, M. Wollenweber, P. Czerney

Author Affiliations +

Proceedings Volume 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII; (1995) https://doi.org/10.1117/12.221748
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

Valinomycin, nonactin and 1,1-dimethylsila-20-crown-7 are well known complexing agents for potassium and ammonium ions. Membrane optodes, based on these ion-selective carriers and appropriate chromoionophores, were produced and spectroscopically investigated in the range of 350-700 nm. The spectra of optodes obtained under flow injection analysis conditions were monitored in dependence on time. The calibration curves for potassium and ammonium ions were registered for each optode. The results clearly demonstrate that all tested optodes are both similarly sensitive to K⁺ and NH₄⁺. Thus, biological fluids can not be analyzed simply by the individual calibration curves when the solutions contain similar amounts of K⁺ and NH₄⁺.

Citation Download Citation

Juergen Polster, G. Prestel, M. Wollenweber, and P. Czerney "Contributions to potassium and ammonium ion-selective optodes based on valinomycin, nonactin, and 1,1-dimethylsila-20-crown-7", Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); https://doi.org/10.1117/12.221748

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available