A chronoamperometric method to estimate changes in the membrane composition of ion-selective membranes

Analytical Chemistry
B D PendleyErno Lindner

Abstract

A new chronoamperometric method is used to estimate changes in the membrane composition of mobile-site, ionophore-based membranes. The characteristic features of the chronoamperometric curves (initial current, slope, break time) of valinomycin-based, potassium-selective membranes loaded with potassium tetrakis(4-chlorophenyl)borate are correlated with the mobile-site and free ionophore concentration in the membrane. limiting cases for strong and negligible ion pair formation are distinguished. Replicate measurements indicate a relative standard deviation in the calculated values less than 10%. The practical applicability of the method was tested with membranes incorporated into conventional ion-selective electrode bodies or cast onto microfabricated planar sensor structures.

References

Feb 3, 2000·Analytical Chemistry·L Y Heng, E A Hall
May 18, 2000·Analytical Chemistry·E Lindner, R P Buck
Feb 24, 2001·Biosensors & Bioelectronics·G NagyE Lindner

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Citations

Oct 31, 2008·Talanta·Eric BakkerErnö Pretsch
Feb 18, 2010·Journal of Electroanalytical Chemistry·Justin M ZookErnő Lindner
Dec 7, 2007·Journal of Pharmaceutical and Biomedical Analysis·L A Al-ShattiA F Shoukry
Sep 14, 2006·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·Robert E Gyurcsányi, Ernõ Lindner
Jun 25, 2010·International Journal of Cosmetic Science·N Lourith, M Kanlayavattanakul
Sep 18, 2013·Journal of Neuropathology and Experimental Neurology·Anne F Buckley, Edward H Bossen
Jan 7, 2011·The Analyst·Takayo Moriuchi-KawakamiYasuhiko Shibutani
Oct 30, 2020·Advanced Materials·Sanggil HanGeorge G Malliaras
Jul 2, 2002·Analytical Chemistry·Eric Bakker, Martin Telting-Diaz
Jan 26, 2008·The Journal of Physical Chemistry. B·Justin M ZookErno Lindner

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