scholarly journals Potentiometric Sensors for Iodide and Bromide Based on Pt(II)-Porphyrin

Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2297 ◽  
Author(s):  
Dana Vlascici ◽  
Nicoleta Plesu ◽  
Gheorghe Fagadar-Cosma ◽  
Anca Lascu ◽  
Mihaela Petric ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Water Absorption ◽  
Vinyl Chloride ◽  
Potentiometric Sensors ◽  
Iodide Ions ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

Pt(II) 5,10,15,20-tetra(4-methoxy-phenyl)-porphyrin (PtTMeOPP) was used in the construction of new ion-selective sensors. The potentiometric response characteristics (slope and selectivity) of iodide and bromide-selective electrodes based on (PtTMeOPP) metalloporphyrin in o-nitrophenyloctylether (NPOE), dioctylphtalate (DOP) and dioctylsebacate (DOS) plasticized poly(vinyl chloride) membranes are compared. The best results were obtained for the membranes plasticized with DOP and NPOE. The sensors have linear responses with near-Nernstian slopes toward bromide and iodide ions and good selectivity. The membrane plasticized with NPOE was electrochemically characterized using the EIS method to determine its water absorption and the diffusion coefficient into the membrane.

scholarly journals Potentiometric Carboxylate Sensors Based on Carbazole-Derived Acyclic and Macrocyclic Ionophores

Chemosensors ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 4
Author(s):  
Ville Yrjänä ◽  
Indrek Saar ◽  
Mihkel Ilisson ◽  
Sandip A. Kadam ◽  
Ivo Leito ◽  
...  
Keyword(s):  
Detection Limit ◽  
Vinyl Chloride ◽  
Anion Exchanger ◽  
Linear Range ◽  
Ph Sensitivity ◽  
Ion Selective Electrodes ◽  
Solid Contact ◽  
Response Characteristics ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

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.

Highly Sensitive and Selective Poly(vinyl chloride)-Membrane Potentiometric Sensors Based on a Calix[4]arene Derivative for 2-Furaldehyde

2009 ◽  
Vol 81 (16) ◽  
pp. 6789-6796 ◽  
Author(s):  
Mojtaba Shamsipur ◽  
Ali Akbar Miran Beigi ◽  
Mohammad Teymouri ◽  
Solmaz Rasoolipour ◽  
Zouhair Asfari
Keyword(s):  
Vinyl Chloride ◽  
Potentiometric Sensors ◽  
Arene Derivative ◽  
Poly Vinyl Chloride ◽  
Highly Sensitive

Photoinduced potentiometric response of poly(vinyl chloride)/spirobenzopyran/crown ether composite memberanes modified with urease

1988 ◽  
Vol 1 (6) ◽  
pp. 309-315 ◽  
Author(s):  
Yasushi Hasebe ◽  
Jun-Ichi Anzai ◽  
Akihiko Ueno ◽  
Tetsuo Osa ◽  
Chien-Wu Chen
Keyword(s):  
Crown Ether ◽  
Vinyl Chloride ◽  
Potentiometric Response ◽  
Poly Vinyl Chloride

Density and Water Absorption of Sugarcane Bagasse-Filled Poly(vinyl chloride) Composites

2012 ◽  
Vol 20 (7) ◽  
pp. 659-664 ◽  
Author(s):  
Riza Wirawan ◽  
SM Sapuan ◽  
Robiah Yunus ◽  
Khalina Abdan
Keyword(s):  
Water Absorption ◽  
Vinyl Chloride ◽  
Sugarcane Bagasse ◽  
Poly Vinyl Chloride
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