Nitrate ion-selective electrodes based on quaternary phosphonium salts in plasticized poly(vinyl chloride) and influence of membrane homogeneity on their performance

The Analyst ◽  
1991 ◽  
Vol 116 (4) ◽  
pp. 361 ◽  
Author(s):  
Manassis G. Mitrakas ◽  
Costas A. Alexiades ◽  
Vissarion Z. Keramidas
The Analyst ◽  
1972 ◽  
Vol 97 (1151) ◽  
pp. 87 ◽  
Author(s):  
J. E. W. Davies ◽  
G. J. Moody ◽  
J. D. R. Thomas

Chemosensors ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 4
Author(s):  
Ville Yrjänä ◽  
Indrek Saar ◽  
Mihkel Ilisson ◽  
Sandip A. Kadam ◽  
Ivo Leito ◽  
...  

Solid-contact ion-selective electrodes with carbazole-derived ionophores were prepared. They were characterized as acetate sensors, but can be used to determine a number of carboxylates. The potentiometric response characteristics (slope, detection limit, selectivity, and pH sensitivity) of sensors prepared with different membrane compositions (ionophore, ionophore concentration, anion exchanger concentration, and plasticizer) were evaluated. The results show that for the macrocyclic ionophores, a larger cavity provided better selectivity. The sensors exhibited modest selectivity for acetate but good selectivity for benzoate. The carbazole-derived ionophores effectively decreased the interference from lipophilic anions, such as bromide, nitrate, iodide, and thiocyanate. The selectivity, detection limit, and linear range were improved by choosing a suitable plasticizer and by reducing the ionophore and anion exchanger concentrations. The influence of the electrode body’s material upon the composition of the plasticized poly(vinyl chloride) membrane, and thus also upon the sensor characteristics, was also studied. The choice of materials for the electrode body significantly affected the characteristics of the sensors.


The Analyst ◽  
1994 ◽  
Vol 119 (9) ◽  
pp. 1985 ◽  
Author(s):  
Johan Bobacka ◽  
Mary McCarrick ◽  
Andrzej Lewenstam ◽  
Ari Ivaska

The Analyst ◽  
1988 ◽  
Vol 113 (6) ◽  
pp. 895 ◽  
Author(s):  
Arthur K. Covington ◽  
Howard Grey ◽  
Patricia M. Kelly ◽  
Kenneth I. Kinnear ◽  
Joyce C. Lockhart

2000 ◽  
Vol 23 (2-3) ◽  
pp. 493-502 ◽  
Author(s):  
Y.M Issa ◽  
M.M Hassouna ◽  
F.M Abdel-Gawad ◽  
E.M Hussien

Talanta ◽  
2011 ◽  
Vol 85 (2) ◽  
pp. 970-974 ◽  
Author(s):  
Vinod Kumar Gupta ◽  
Lok Pratap Singh ◽  
Sudeshna Chandra ◽  
Sunita Kumar ◽  
Rakesh Singh ◽  
...  

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