Poly(vinyl chloride) membrane electrode on a graphite substrate for the potentiometric titration of tetramethylammonium bromide with sodium tetraphenylborate

The Analyst ◽  
1990 ◽  
Vol 115 (9) ◽  
pp. 1211 ◽  
Author(s):  
C. L. M. Holten ◽  
H. N. Stein
Keyword(s):  
Potentiometric Titration ◽  
Vinyl Chloride ◽  
Graphite Substrate ◽  
Membrane Electrode ◽  
Sodium Tetraphenylborate ◽  
Poly Vinyl Chloride ◽  
Tetramethylammonium Bromide

Zn(II)-selective poly (vinyl chloride) (PVC) membrane electrode based on Schiff base ligand 2-benzoylpyridine semicarbazone as an ionophore

2020 ◽  
Vol 40 (10) ◽  
pp. 842-847
Author(s):  
Shankar Suman ◽  
Ram Singh
Keyword(s):  
Schiff Base ◽  
Detection Limit ◽  
Vinyl Chloride ◽  
Pvc Membrane ◽  
Membrane Electrode ◽  
Sodium Tetraphenylborate ◽  
Potential Response ◽  
Selective Electrode ◽  
Poly Vinyl Chloride ◽  
Pvc Membrane Electrode

AbstractA new poly (vinyl chloride) (PVC) membrane electrode using 2-benzoylpyridine semicarbazone as membrane carrier with dioctylphthalate as plasticizer and sodium tetraphenylborate (NaTBP) as anion excluder has been fabricated and investigated as Zn(II)-selective electrode. Best potential response is observed for the composition PVC 30%, plasticizer 58%, NaTBP 8% and ionophore 4% (w/w). The sensor showed a linear stable response over a concentration range of 1.0 × 10−2–4.56 × 10−6 M with a detection limit of 2.28 × 10−6 M and a response time <10 s. The electrode can be used for at least six months without any divergence in potential.

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