Potentiometric behaviour of a perchlorate-selective polyvinyl chloride matrix membrane electrode using tris-bathophenanthroline ferrous perchlorate

1976 ◽  
Vol 281 (4) ◽  
pp. 295-298 ◽  
Author(s):  
M. Čakrt ◽  
J. Berčik ◽  
Z. Hladký
Keyword(s):  
Polyvinyl Chloride ◽  
Membrane Electrode ◽  
Chloride Matrix

Microsized Graphite Sensors for Potentiometric Determination of Cyclobenzaprine Hydrochloride in Pure Powder, Tablets, and Plasma

2011 ◽  
Vol 94 (6) ◽  
pp. 1807-1814 ◽  
Author(s):  
Nesrin K Ramadan ◽  
Hala E Zaazaa ◽  
Hanan A Merey
Keyword(s):  
Polyvinyl Chloride ◽  
International Union ◽  
Electroactive Material ◽  
Significant Difference ◽  
Intact Drug ◽  
Sensitivity And Selectivity ◽  
Ph Range ◽  
The U.S ◽  
Chloride Matrix

Abstract Two cyclobenzaprine hydrochloride (CZ) microsized graphite selective sensors were investigated with dibutylsebacate as a plasticizer in a polymeric matrix of carboxylated polyvinyl chloride (PVC-COOH) in the case of sensor 1, based on the interaction between the drug and the dissociated COOH groups in the PVC-COOH. Sensor 2 was based on the interaction between the drug and ammonium reineckate, which acted as anionic electroactive material in the presence of polyvinyl chloride matrix. The two sensors were constructed by using 2-hydroxy propyl β-cyclodextrin as an ionophore, which has a significant influence on increasing the membrane sensitivity and selectivity of both sensors. Fast and stable Nernstian responses of 1 × 10–5–1 × 10–2 and 1 × 10m–4–1 × 10–2 M for the two sensors, respectively, with slopes of 58.6 and 55.5 mV/decade, respectively, over the pH range 2–4 were obtained. The proposed method displayed useful analytical characteristics for determination of CZ in its pure powder form with average recoveries 99.95 ± 0.23 and 99.61 ± 0.34% for sensors 1 and 2, respectively, and in plasma with good recoveries. The sensors were also used to determine the intact drug in the presence of its degradate and, thus, could be used as stability-indicating methods. The obtained results by the proposed methods were statistically analyzed and compared with those obtained by the U.S. Pharmacopeia method; no significant difference for either accuracy or precision was observed. Results obtained with the two electrodes revealed their performance characteristics, which were evaluated according to International Union of Pure and Applied Chemistry recommendations.

The effect of modified pluronic on the distribution of fillers in the polyvinyl chloride matrix

2010 ◽  
Vol 115 (3) ◽  
pp. 1732-1741 ◽  
Author(s):  
Nehad N. Rozik ◽  
S. L. Abd-El Messieh ◽  
K. N. Abd-El Nour
Keyword(s):  
Polyvinyl Chloride ◽  
Chloride Matrix

scholarly journals FIA of cationic surfactants using plasticized polyvinyl chloride membrane electrode.

1991 ◽  
Vol 40 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Takashi MASADOME ◽  
Toshihiko IMATO ◽  
Nobuhiko ISHIBASHI
Keyword(s):  
Polyvinyl Chloride ◽  
Cationic Surfactants ◽  
Membrane Electrode ◽  
Polyvinyl Chloride Membrane

Manganese(II)-ion-selective electrode based on 2,2′-bis(salicylideneamino)azobenzene incorporated in poly(vinyl chloride) matrix

2009 ◽  
Vol 74 (9) ◽  
pp. 1411-1424 ◽  
Author(s):  
Mohammad Bagher Gholivand ◽  
Maryam Gorji ◽  
Mohammad Joshaghani
Keyword(s):  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Selective Electrode ◽  
Good Discrimination ◽  
Discrimination Ability ◽  
Poly Vinyl Chloride ◽  
Pvc Membrane Electrode ◽  
Chloride Matrix

A new PVC membrane electrode highly selective to Mn(II), based on 2,2′-bis(salicylideneamino)azobenzene as an ionophore. The electrode exhibits a Nernstian response to Mn(II) ions over a concentration range 0.8 × 10–1–1.1 × 10–7 mol l–1 with a slope of 30.5 ± 0.5 mV per decade and detection limit 5.5 × 10–8 mol l–1. The electrode was used for 45 days at the minimum without any measurable potential divergence. Also, the electrode revealed a fairly good discrimination ability between Mn(II) ions and some cations and anions. The electrode was also utilized as indicator electrode in the potentiometric titration of Mn(II) with EDTA and in determination of Mn(II) in drug as well as tape and river water.

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