29 September 1995 Contributions to potassium and ammonium ion-selective optodes based on valinomycin, nonactin, and 1,1-dimethylsila-20-crown-7
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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+.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Juergen Polster, G. Prestel, M. Wollenweber, 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); doi: 10.1117/12.221748; https://doi.org/10.1117/12.221748
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