scholarly journals Ion-Selective Electrode for Anionic Surfactants Using Hexadecyl Trimethyl Ammonium Bromide-Sodium Dodecylsulfate as an Active Ionophore

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Junwei Wang ◽  
Zhiping Du ◽  
Wanxu Wang ◽  
Wei Xue
Keyword(s):  
Limit Of Detection ◽  
Sodium Dodecylsulfate ◽  
Poor Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Ammonium Bromide ◽  
Hexadecyl Trimethyl Ammonium Bromide ◽  
Pvc Membrane Electrode ◽  
Wide Ph Range

The construction and characteristic performance of PVC membrane electrode responsive to sodium dodecylsulfate (SDS) are described in this paper. The electrode is based on hexadecyl trimethyl ammonium bromide-Sodium dodecylsulfate (CTA+DS−) ion pair as ionophore in PVC membrane, which displays a Nernstian slope of −58 ± 0.9 mV/decade in a 5.0 × 10−6to 2.5 × 10−3 mol L−1concentration range and a limit of detection of 2.9 × 10−6 mol L−1. The electrode can be used for 3 months without showing significant changes in the value of slope or working range. Also the electrode has wide pH range of application and short response time. The electrode shows a selective response to SDS and a poor response to common inorganic anions. The selective sequence found was SDS > HCO3 −> CH3COO−> Cl−> I−> NO3 −≈Br−> F−> CO3 2−> C6H5O7 3−> C2O4 2−> SO4 2−> C4H4O6 2−> SO3 2−> PO4 3−. The potentiometric selectivity coefficients determined are indicating that common anions would not interfere in the SDS determination. The electrode has been utilized as an end point indicator electrode for potentiometric titration involving hyamine as titrant.

scholarly journals Thiocyanate Ion-Selective PVC Membrane Electrode

2010 ◽  
Vol 5 (1) ◽  
pp. 73-77
Author(s):  
Mihail Revenco ◽  
Mariana Martin ◽  
Waell Abu Dayyih
Keyword(s):  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Thiocyanate Ion ◽  
Pvc Membrane Electrode ◽  
Wide Ph Range ◽  
Nernstian Slope ◽  
Ph Range ◽  
Discriminating Ability ◽  
Selective Sensor

A potentiometric selective sensor based on trinuclear chromium(III) complex as a novel ionophore for the thiocyanateselective electrode is reported. The sensor displays a near Nernstian slope of 57 ± 2 mV per decade, over a wide pH range 3 - 11. The working concentration range of the electrode is 1.10-5 – 1.10-1 mol/l with a detection limit of 5.10-6 mol/l. The sensor has a response time of 20 s and can be used for at least 6 months without any considerable fluctuation of the potential. The selectivity coefficients determined at using the fixed interference method indicate a good discriminating ability towards other anions. The prepared sensor was applied as an indicator electrode in the titration of thiocyanate with Ag+.

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.

Thiophene-based Schiff base ligand as ionophore for Ni(II)-selective polyvinyl chloride membrane electrode

2020 ◽  
Vol 40 (6) ◽  
pp. 481-485 ◽  
Author(s):  
Shankar Suman ◽  
Ram Singh
Keyword(s):  
Schiff Base ◽  
Polyvinyl Chloride ◽  
Ethylenediaminetetraacetic Acid ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Nonaqueous Media ◽  
Pvc Membrane Electrode ◽  
Ph Range ◽  
Polyvinyl Chloride Membrane

AbstractA synthesized Schiff base 2-acetylthiophene semicarbazone (3) was used for the preparation of Ni2+ selective polyvinyl chloride (PVC) membrane electrode. The prepared electrode with the optimized composition, PVC:3:sodium tetraphenylborate:di-n-butylphthalate as 33:6:3:58 exhibited a Nernstian response over the working range of 5.0 × 10−6–5.0 × 10−2 mol l−1 with a slope of 29.0 ± 0.3 mV/concentration. The electrode showed good selectivity towards Ni2+ with respect to several metal ions in the pH range of 2.5–10.0 in <15 s with a detection limit of 4.7 × 10−6 mol l−1. The electrode showed the additional benefit of working in partially nonaqueous media having up to 15% (v/v) methanol or ethanol. This electrode was also successfully applied in Ni2+ ion potentiometric titration with ethylenediaminetetraacetic acid as an indicator electrode.

scholarly journals Mg(II) Selective PVC Membrane Electrode Based on Methyl Phenyl Semicarbazone as an Ionophore

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Sulekh Chandra ◽  
Kusum Sharma ◽  
Adarsh Kumar
Keyword(s):  
High Sensitivity ◽  
Fast Response ◽  
Pvc Membrane ◽  
Indicator Electrode ◽  
Membrane Electrode ◽  
Trivalent Cation ◽  
Selective Electrode ◽  
Pvc Membrane Electrode ◽  
Ph Range ◽  
Methyl Phenyl

A PVC-membrane-based Mg(II) selective electrode was constructed using methyl phenyl semicarbazone (MPS) as a neutral carrier. The sensor exhibits a Nernstian response for Mg(II) ion over a wide concentration range1.0×10-8  to  1.0×10-1 M with the slope of 28.4 mV/per decade having detection limit1.7×10-9 M. It was relatively a fast response time (<10 s for concentration≥1.0×10-3and<15 s for concentration of≥1.0×10-6 M) and can be used for 8 months without any considerable divergence in potentials. The proposed sensor revealed relatively good selectivity and high sensitivity for Mg(II) over a mono-, di-, and trivalent cation and can be used in a pH range of 1.0–9.5. It was also successfully used as an indicator electrode in potentiometer titration and in the analysis of concentration of magnesium in various real samples.

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.

scholarly journals Novel mefenamic acid PVC membrane sensor based on a new Cd Schiff's base complex containing a phenanthroline unit

RSC Advances ◽  
2017 ◽  
Vol 7 (62) ◽  
pp. 39118-39126 ◽  
Author(s):  
Mohammad Noroozi ◽  
Hassan Keypour
Keyword(s):  
Mefenamic Acid ◽  
Schiff Base Complex ◽  
Pvc Membrane ◽  
Membrane Electrode ◽  
Schiff’S Base ◽  
Real Samples ◽  
Membrane Sensor ◽  
Base Complex ◽  
Pvc Membrane Electrode ◽  
Pvc Membrane Sensor

In this study, a PVC membrane electrode modified with a Cd Schiff base complex was constructed as a novel, sensitive and selective structured carrier for checking trace amounts of mefenamic acid in real samples.

A study of calcium ion-selective PVC membrane electrode based on neutral carrier N,n,n’,n’-tetracyclo-3-oxapetanediamide

1992 ◽  
Vol 12 (2) ◽  
pp. 98-102
Author(s):  
Ma Yi-long ◽  
Rao Xiao-hong ◽  
Zhong Shi-ming ◽  
Ren Shu ◽  
Yu Tian-xiang ◽  
...  
Keyword(s):  
Calcium Ion ◽  
Pvc Membrane ◽  
Membrane Electrode ◽  
Neutral Carrier ◽  
Pvc Membrane Electrode
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