Iodide Selective Electrode Based on Cobalt(II) Complex with Dual-Core Schif Base as Neutral Carrier

2012 ◽  
Vol 549 ◽  
pp. 221-224
Author(s):  
Gang Xu ◽  
Wen Li Dong ◽  
Ling Yan Ren
Keyword(s):  
Schiff Base ◽  
Detection Limit ◽  
Vinyl Chloride ◽  
Wide Concentration Range ◽  
Pvc Membrane ◽  
Selective Electrode ◽  
Neutral Carrier ◽  
Poly Vinyl Chloride ◽  
Dual Core

A new highly selective poly vinyl chloride(PVC) membrane iodide electrode which has neutral carrier of cobalt(Ⅱ) complex with symmetrical binuclear schiff base has been studied. Based on the fact we knew that ethylenediamine could react to acetylacetone and salicylaldehyde. The electrode exhibited near -Nernst response to iodide with a slope of ―54.4 mV/dec over a wide concentration range (1.58×10-7~1.0×10-1 mol/L) with a detection limit of 6.3×10-8 mol/L in phosphorate bufer solution with pH=2.4 at 26°C. After applied to the determination of iodide in pharmaceuticals and salts, the electrode could get satisfied results

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.

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.

scholarly journals Evaluation of a dioxime-type Schiff base-poly (vinyl chloride) membrane as a silver-ion selective electrode.

2002 ◽  
Vol 51 (9) ◽  
pp. 779-784 ◽  
Author(s):  
Masato UEDA ◽  
Akiyo KOMAI ◽  
Keiichi FUJIMORI ◽  
Takayo MORIUCHI-KAWAKAMI ◽  
Yasuhiko SHIBUTANI
Keyword(s):  
Schiff Base ◽  
Vinyl Chloride ◽  
Silver Ion ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Poly Vinyl Chloride

scholarly journals Construction of a novel highly selective potentiometric perchlorate sensor based on neocuproine–Cu(II) complex formed in situ during the conditioning period

Chemija ◽  
2018 ◽  
Vol 29 (1) ◽  
Author(s):  
Ahmet Onder ◽  
Cihan Topcu ◽  
Fatih Coldur
Keyword(s):  
Detection Limit ◽  
Water Samples ◽  
Membrane Structure ◽  
Membrane Composition ◽  
Selective Electrode ◽  
Poly Vinyl Chloride ◽  
Conditioning Period ◽  
Electrode Membrane

A potentiometric perchlorate-selective electrode based on a phenanthroline derivative, neocuproine (2,9-dimethyl-1,10-phenanthroline), was developed. An electroactive substance, a neocuproine complex of Cu2+, providing a selective response to perchlorate was formed in situ in the electrode membrane structure during the conditioning process. Membrane optimization studies showed that the most suitable membrane composition was 1.0% (w/w) neocuproine, 69.0% (w/w) o-nitrophenyloctylether (o-NPOE) and 30.0% (w/w) poly(vinyl chloride) (PVC) in terms of potentiometric performance characteristics. For the proposed electrode, the linear range, slope, detection limit, pH working range and response time were determined as 2.5 × 10–7–1.0 × 10–1 M, –53.01 mV/decade, 1.0 × 10–7 M, 4.0–12.5 and ≈3 s, respectively. The proposed sensor was successfully used in the determination of perchlorate contents of some perchlorate spiked tap, river and dam water samples.

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.

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