scholarly journals Study of Cobalt(III) Corrole as the Neutral Ionophore for Nitrite and Nitrate Detection via Polymeric Membrane Electrodes

2013 ◽  
Vol 25 (12) ◽  
pp. 2579-2585 ◽  
Author(s):  
Si Yang ◽  
Mark E. Meyerhoff
Keyword(s):  
Polymeric Membrane ◽  
Membrane Electrodes ◽  
Neutral Ionophore

Neutral ionophore-based selective electrode for assaying the activity of magnesium in undiluted blood serum

1990 ◽  
Vol 36 (3) ◽  
pp. 466-469 ◽  
Author(s):  
M Rouilly ◽  
B Rusterholz ◽  
U E Spichiger ◽  
W Simon
Keyword(s):  
Blood Serum ◽  
Serum Sample ◽  
Polyvinyl Chloride ◽  
Polymeric Membrane ◽  
Membrane Electrodes ◽  
Plasma Samples ◽  
Selective Electrode ◽  
Ionized Magnesium ◽  
Undiluted Serum ◽  
Neutral Ionophore

Abstract The concentration of free, ionized magnesium in undiluted blood serum can be determined potentiometrically with a new magnesium-selective carrier in polymeric membrane electrodes (by weight 66% plasticizer, approximately 33% polyvinyl chloride and approximately 1% ionophore). However, discrimination of calcium by the new ionophore-added membrane is not sufficient to keep calcium interference to less than 1%. To correct for the interference by calcium, we determine the calcium activity of the serum sample with a calcium-selective electrode and calibrate the magnesium-selective electrode with standard solutions containing calcium in the concentrations found. In this way we determined the free ionized magnesium in five plasma samples from five different persons and found it to be within the range expected for magnesium in undiluted serum.

Polymeric membrane electrodes for drug analysis

1988 ◽  
Vol 6 (6-8) ◽  
pp. 717-723 ◽  
Author(s):  
Luigi Campanella ◽  
Mauro Tomassetti ◽  
Franco Mazzei ◽  
Riccardo Sbrilli
Keyword(s):  
Drug Analysis ◽  
Polymeric Membrane ◽  
Membrane Electrodes

Gallium(III)-Schiff Base Complexes as Novel Ionophores for Fluoride Selective Polymeric Membrane Electrodes

2005 ◽  
Vol 17 (15-16) ◽  
pp. 1347-1353 ◽  
Author(s):  
Jeremy T. Mitchell-Koch ◽  
Elzbieta Malinowska ◽  
Mark E. Meyerhoff
Keyword(s):  
Schiff Base ◽  
Schiff Base Complexes ◽  
Polymeric Membrane ◽  
Membrane Electrodes

Potentiometric polymeric membrane electrodes for mercury detection using calixarene ionophores

2010 ◽  
Vol 61 (3) ◽  
pp. 693-704 ◽  
Author(s):  
Sonika Tyagi ◽  
Himanshu Agarwal ◽  
Saiqa Ikram
Keyword(s):  
Heavy Metal Ions ◽  
Aqueous Media ◽  
Active Material ◽  
Potential Method ◽  
Fast Response ◽  
Analytical Tool ◽  
Polymeric Membrane ◽  
Membrane Electrodes ◽  
Industrial Waste Water ◽  
Mercury Detection

It is here established that potentiometric polymeric membrane electrodes based on electrically neutral ionophores are a useful analytical tool for the detection of heavy metal ions from environmental and industrial waste water. PVC based membrane containing p-tert-butyl-calix[4]arenethioether derivative as active material along with sodiumtetraphenylborate (NaTPB) as solvent mediator and dibutylphthalate as a plasticizer in the ratio 45:9:460:310 (w/w%) (I:NaTPB:DBP:PVC) exhibits good properties with a Nernstian response of 29.50±1.0 mV per decade of activity and a working concentration range of 7.2 × 10−8–1.0 × 10−1 M. The electrode gave more stable potential readings when used around pH 2.5–6.8 and exhibits fast response time of 14 s. The sensors were found to work satisfactorily in partially non-aqueous media up to 40% (v/v) content of acetone, methanol or ethanol and could be used over a period of 7–9 months. Excellent selectivity for Hg2+ ions is indicated by match potential method and fixed interference method. The sensors could be used successfully in the estimation of mercury in different sample.

Surfactant-sensitive polymeric membrane electrodes

1977 ◽  
Vol 85 (1) ◽  
pp. 145-161 ◽  
Author(s):  
S.G. Cutler ◽  
P. Meares ◽  
D.G. Hall
Keyword(s):  
Polymeric Membrane ◽  
Membrane Electrodes
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