Potentiometric analysis of ionic surfactants by a new type of ion-selective electrode

1997 ◽  
Vol 349 (1-3) ◽  
pp. 59-65 ◽  
Author(s):  
M. Gerlache ◽  
Z. Sentürk ◽  
J.C. Viré ◽  
J.M. Kauffmann
Keyword(s):  
Ion Selective Electrode ◽  
Ionic Surfactants ◽  
Selective Electrode ◽  
New Type ◽  
Potentiometric Analysis

scholarly journals The Effect of pH and Concentration of KNO3 Solution to the Performance of Nd3+ Ion Selective Electrode Using HPMBP Ionophore

2018 ◽  
Vol 3 (3) ◽  
pp. 193
Author(s):  
Husain Sosidi ◽  
Buchari Buchari ◽  
Indra Noviandri
Keyword(s):  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Buffer Solution ◽  
Potential Measurement ◽  
Ph Variation ◽  
Measurement Results ◽  
Optimum Ph ◽  
Electrode Method ◽  
Potentiometric Analysis ◽  
Ph Range

<p>The phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP) synthesized and characterized as ionophore in potentiometric analysis of ion selective electrode method (ISE) with polytetrafluoroethylene (PTFE) as the supporting phase. The pH and concentration of the ionic strength adjuster (ISA) were varied to know at the optimum pH and concentration of the ion-selective electrode (ESI) KNO<sub>3</sub>, thus potential Nd<sup>3+</sup> gives the best performance. Before use the PTFE membrane was immersed in a chloroform-HPMBP solution of 1.5-2.0% w/v for 24 h. The pH variation of the buffer solution was adjusted to the pH range of 2-10 using HCl and NaOH solutions, whereas the concentration of KNO<sub>3</sub> varies from 10<sup>-1</sup> to 10<sup>-3</sup> M. The concentration range of Nd<sup>3+</sup> is between 10<sup>-2</sup> and 10<sup>-7</sup> M. The electrode potential measurement results (E<sub>Nd</sub>) obtained the best performance value at pH 4 with KNO<sub>3</sub> concentration of 10<sup>-2</sup> M, sensitivity (S) 18.39 ± 1.2 mV/decade and response time less than 23 s.</p>

scholarly journals DIANTIPYRYLPROPYLMETHANE AS ELECTRODE-ACTIVE COMPONENTS OF MEMBRANE OF LEAD SELECTIVE ELECTRODE

2018 ◽  
Vol 61 (2) ◽  
pp. 23
Author(s):  
Sarizhat D. Tataeva ◽  
Arsen Sh. Ramazanov ◽  
Victoriya S. Magomedova ◽  
Kurban E. Magomedov ◽  
Ruslan Z. Zeynalov
Keyword(s):  
Copper Ions ◽  
Ion Selective Electrode ◽  
Membrane Composition ◽  
Active Components ◽  
Selective Electrode ◽  
Zinc Cadmium ◽  
Potentiometric Analysis ◽  
The Stability ◽  
Membrane Components

The possibility of approbation of an ion-selective electrode based on diantipyrylpropylmethane for determination of lead is considered in the work. Optimization of the membrane composition of an ion-selective electrode was carried out with the change of weight ratios of membrane components. The best results were obtained with the addition of potassium tetraphenylborate by weight of 1.35%. According to the obtained experimental steepness, a membrane of composition (wt.%) was chosen: PVC (32.62), o-PFOE (65.25), DAPPM (1.35), NaTPB (0.78). The linearity interval of the electrode with an optimized composition of the membrane was observed in the concentration range of 10-6 -10-1 M, with a response of 10 s. The slope of the Pb-SE function is 27.4 ± 0.5 mV / pC. The influence of the acidity of the medium on the Pb-SE response was studied. At the pH=3-5 a potential of the Pb-SE for the compositions remains stable with a drift not more than 2 mV. For a given electrode, the selectivity coefficients were determined by the method of bionic potentials with respect to some d-elements, as well as alkaline and alkaline-earth metals. The influence of zinc, cadmium, mercury and copper ions on the membrane response is significant, which requires the use of various masking reagents in potentiometric analysis in the presence of these ions. To increase the selectivity of the membrane to lead ions, 0.1 M NH4SCN was introduced into the solution under analysis to bind Cu (II), Zn (II), Hg (II) and Cd (II) ions to stronger ammonium complexes. The proposed electrode favorably differs by the interval of the determined concentrations (M) - 10-6 - 10-1; high selectivity, and also increases in the stability of the membrane due to high lipophilicity relative to diantipyrylmethane.Forcitation:Tataeva S.D., Ramazanov A.Sh., Magomedova V.S., Magomedov K.E., Zeynalov R.Z. Diantipyrylpropylmethane as electrode-active components of membrane of lead selective electrode. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 2. P. 23-28

A NEW TYPE OF AN ION-SELECTIVE ELECTRODE BASED ON AN ANION EXCHANGE RESIN WITH A HYDROPHOBIC SITE

1977 ◽  
Vol 6 (7) ◽  
pp. 815-816 ◽  
Author(s):  
Akinori Jyo ◽  
Toshihiko Imato ◽  
Kazumi Fukamachi ◽  
Nobuhiko Ishibashi
Keyword(s):  
Anion Exchange ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Hydrophobic Site ◽  
New Type

Titration of sulphates and lead using lead ion selective electrode

1981 ◽  
Vol 46 (2) ◽  
pp. 368-376 ◽  
Author(s):  
Josef Veselý
Keyword(s):  
Ionic Strength ◽  
Electrode Surface ◽  
Salt Content ◽  
Ion Selective Electrode ◽  
Lead Ion ◽  
Selective Electrode ◽  
Limit Of Determination ◽  
Total Salt Content ◽  
Automatic Titration

Titration of sulphates with lead perchlorate employing lead ion selective electrode indication was studied using additions of various organic solvents at different pH' and ionic strength values. As the optimum emerged systems with 60-70% 1,4-dioxane, pH' 5.3-5.6. After dehydration with sodium hydroxide, dioxane must be freed from the electrode surface-oxidizing impurities by their reduction with sodium metal and subsequent distillation. The method was applied to determination of sulphates in mountain spring waters. Units of ppm can be determined; the limit of determination, however, depends considerably on the content of dioxane, total salt content in the sample, and speed of the semi-automatic titration. Lead can be determined with EDTA in concentrations down to c(Pb2+) = 5 . 10-6 mol l-1.

Association of benflurone in aqueous solutions studied by measuring the activity of chloride ions

1986 ◽  
Vol 51 (11) ◽  
pp. 2437-2443
Author(s):  
František Kopecký ◽  
Mária Vojteková ◽  
Milan Pešák
Keyword(s):  
Aqueous Solutions ◽  
Chloride Ions ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Measured Range

The conventional activity of chloride ions was measured by an ion-selective electrode at 25 °C in aqueous solutions of benflurone, i.e. 5-(2-(N,N-dimethylamino)ethoxy)-7-oxo-7H-benzo(c)fluorene hydrochloride, without or with additions of KCl. These results suggest a gradual association of benflurone; the formation of a hetero-associate, (BH+)2Cl-, followed by higher associates was evaluated in the measured range up to 0.1 mol l-1.

Sign in / Sign up

Export Citation Format

Share Document