Weighting Factor in Calculation of Comprehensive Quality Index and Optimization of PVC Membrane Composition for Ion Selective Electrode

2007 ◽  
Vol 35 (5) ◽  
pp. 469-479 ◽  
Author(s):  
Xian Xiang Sun ◽  
Min Hua Xu ◽  
Cheng Jun Sun ◽  
Hassan Y. Aboul‐Enein
Keyword(s):  
Quality Index ◽  
Weighting Factor ◽  
Ion Selective Electrode ◽  
Pvc Membrane ◽  
Membrane Composition ◽  
Selective Electrode

A bismuth(III) PVC membrane ion selective electrode based on 5-(3,4,5-trimethoxyphenyl)-4-amino-1,2,4-triazole-3-thiol

2015 ◽  
Vol 26 (9) ◽  
pp. 1147-1149 ◽  
Author(s):  
Hai-Xia Wang ◽  
Zhen-Ning Yan ◽  
Xiang-Li Wen ◽  
Yun-Xia Kang ◽  
Shuang-Yan Zhang
Keyword(s):  
Ion Selective Electrode ◽  
Pvc Membrane ◽  
Selective Electrode

scholarly journals Bis(trans-cinnamaldehyde)-1,3-propanediimine) mercury(II)chloride, [Hg(BPPPB)Cl2] as Carrier for Construction of Iodide Selective Electrode

2012 ◽  
Vol 9 (4) ◽  
pp. 2565-2574
Author(s):  
G. Karimipour ◽  
S. Gharaghani ◽  
R. Ahmadpour
Keyword(s):  
Limit Of Detection ◽  
Direct Determination ◽  
Pvc Membrane ◽  
Membrane Composition ◽  
Selective Electrode ◽  
Graphite Electrodes ◽  
Response Characteristics ◽  
Iodide Ion ◽  
Wide Ph Range ◽  
Ph Range

Highly selective poly(vinyl chloride) (PVC) membrane of iodide ion selective electrode based on the application of bis(trans-cinnamaldehyde)-1,3-propanediimine)mercury(II)chloride [Hg(BPPPB)Cl2] as new carrier by coating the membrane ingredient on the surface of graphite electrodes has been reported. The effect of various parameters including membrane composition, pH and possible interfering anions on the response properties of the electrode were examined. At optimum conditions, the proposed sensor exhibited Nernstian responses toward iodide ion in a wide concentration range of 1×10-6to 0.1 M with slopes of 58.0±0.8 mV per decade of iodide concentration over a wide pH range of 3-11 with detection limit of detection of ~8×10-7M. The sensors have stable responses times of ≤ 5 s and give stable response after conditioning in 0.05 M KI for 24 h with its response is stable at least 2 months without any considerable divergence in its potential response characteristics. The electrodes were successfully applied for the direct determination of iodide ion in water sample and as indicator electrodes in precipitation titrations.

Lead ion-selective electrode prepared by sol–gel and PVC membrane techniques

2005 ◽  
Vol 107 (1) ◽  
pp. 438-445 ◽  
Author(s):  
M. Mazloum Ardakani ◽  
M. Khayat Kashani ◽  
M. Salavati-Niasari ◽  
A.A. Ensafi
Keyword(s):  
Sol Gel ◽  
Ion Selective Electrode ◽  
Lead Ion ◽  
Pvc Membrane ◽  
Selective Electrode

Influence of extraction properties of PVC plasticizer membrane on the response of coated wire type ion selective electrode

1988 ◽  
Vol 53 (5) ◽  
pp. 912-920 ◽  
Author(s):  
Emil Halámek ◽  
Tomáš Čapoun ◽  
Jan Souček
Keyword(s):  
Distribution Coefficient ◽  
Electrode Potential ◽  
Ion Pair ◽  
Ion Selective Electrode ◽  
Ion Concentration ◽  
Pvc Membrane ◽  
Potential Range ◽  
Selective Electrode ◽  
Coated Wire ◽  
Extraction Properties

The authors studied the influence of the extraction properties of a PVC membrane plasticizer of a coated-wire type ion-selective electrode on its response in titrations of brucine and atropine with sodium tetraphenyl borate, as well as in potentiometric determinations of these compounds. The highest attainable value of the ion pair concentration in the plasticizer, which is limited by the distribution coefficient of the ion pair, determines the interval in which the electrode potential can be changed; and a linear dependence of the potential range of the titration curves on the logarithm of the ion-pair distribution coefficient was found. The slope of the dependence of the electrode potential on the logarithm of the ion concentration to be determined, found in potentiometric measurements, is proportional to the distribution coefficient of the ion which forms a pair with the ion to be determined and in whose solution the electrode membrane is activated between the measurements. The dependence of the slope of the electrode function on the logarithm of the product of the mentioned distribution coefficients is linear.

ION-SELECTIVE ELECTRODE DETERMINATION OF SOLUTION K IN SOIL SUSPENSIONS AND ITS SIGNIFICANCE IN KINETIC STUDIES

1990 ◽  
Vol 70 (3) ◽  
pp. 411-424 ◽  
Author(s):  
F. L. WANG ◽  
P. M. HUANG
Keyword(s):  
Ionic Strength ◽  
Response Time ◽  
Soil Particle ◽  
Ion Selective Electrode ◽  
Pvc Membrane ◽  
Calibration System ◽  
Selective Electrode ◽  
Soil Particles ◽  
K Concentration

The feasibility of using a K ion-selective electrode (K-ISE) to monitor changes in solution K concentration in soil suspensions with time, under shaking conditions, was investigated and its significance in kinetics studies of K adsorption was discussed. Factors that affect the efficiency of the K-ISE method include the response time of the electrode, influence of suspended soil particles, shaking speed, and ionic strength of the system. The response time of the K-ISE decreased with increasing K concentration. Moreover, for a system with a solution K concentration greater than 10 mg K L−1, errors resulting from response delays were negligible when, under shaking conditions, observation time intervals were greater than 30 s. The influence of suspended soil particles on the K-ISE method was negligible for soil suspensions with a solution/soil ratio of 50:1 (vol/wt). Shaking significantly influenced K-ISE determination of solution K concentration. The degree of the influence of shaking on the determination of solution K appeared to be related to ionic factors of the systems. Shaking had much less influence on the soil suspensions, the filtrates and mixed CaCl2-KCl solutions than on pure KCl solutions. Satisfactory results were obtained by taking into account the response time, suspended soil particle and shaking speed factors and by adjusting the ionic strength of the calibration system (KCl standard solution series). Key words: Potassium ion-selective PVC membrane electrode, batch technique, kinetics, calibration system, electrode response time, suspended soil particle, shaking speed, ionic strength

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