New approach to multiply the sensitivity of direct potentiometry by using two ion-selective electrode-containing cells Application to KCI CuCI2, and CaCI2

1993 ◽  
pp. 067-073
Author(s):  
Jamal T. ELWARFALLI ◽  
Adel F. SHOUKRY
Keyword(s):  
Ion Selective Electrode ◽  
Selective Electrode ◽  
New Approach ◽  
Direct Potentiometry

scholarly journals Direct Potentiometry of Polyacrylate with Solid-Membrane Cadmium Ion-Selective Electrode

2009 ◽  
Vol 58 (8) ◽  
pp. 749-752
Author(s):  
Takanori Ichikawa ◽  
Takashi Yasui ◽  
Kazutake Takada ◽  
Akio Yuchi
Keyword(s):  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Cadmium Ion ◽  
Direct Potentiometry

Determination of sodium with ion-selective electrodes.

1981 ◽  
Vol 27 (8) ◽  
pp. 1435-1438 ◽  
Author(s):  
G B Levy
Keyword(s):  
Whole Blood ◽  
Theoretical Basis ◽  
Protein A ◽  
Ion Selective Electrode ◽  
Flame Photometry ◽  
Ion Selective Electrodes ◽  
Selective Electrode ◽  
Indirect Methods ◽  
Direct Potentiometry

Abstract The advent of ion-selective electrodes made possible the potentiometry of sodium in serum and plasma. These methods were based on dilution of serum, as done in flame photometry, and the results were identical. Analysis of whole blood precludes dilution and so "direct" potentiometry was developed. Results by this technique are variable but tend to compensate for the spurious hyponatremias found by the "indirect" dilution methods due to displacement of volume by lipids and protein. However, there is no unambiguous theoretical basis on which to choose between the various direct ion-selective-electrode techniques and instruments. As an alternative, I propose use of current indirect methods, with numerical correction for the shift in normal sodium values in the presence of abnormal lipid and (or) protein. A table was constructed for making such corrections.

scholarly journals ION-SELECTIVE ELECTRODE FOR DETERMINATION OF METFORMIN IN PHARMACEUTICAL PREPARATIONS

2020 ◽  
pp. 124-129
Author(s):  
Геннадий Иванович Мантров ◽  
Мариана Александровна Феофанова ◽  
Егор Максимович Грачев
Keyword(s):  
Pharmaceutical Preparations ◽  
Ion Pair ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Electroactive Materials ◽  
Direct Potentiometry

Описана конструкция и электроаналитические характеристики ионселективного электрода (ИСЭ) для количественного определения метформина. В качестве электродноактивных соединений в ИСЭ были использованы ионные ассоциаты метформина с фосфорновольфрамовой(ФВК), фосфорномолибденовой(ФМК) и кремний вольфрамовой кислотами (КВК). Проведено потенциометрическое определение метформина в фармацевтических препаратах. The construction and electroanalytical characteristics of ion-selective electrode (ISE) for metformin are described. Ion pair of metformin with heteropolyacids were tested as electroactive materials for ionometric sensor controls. The ISE was used for direct potentiometry of metformin.

A new approach for decreasing the detection limit for a ketamine(I) ion-selective electrode

2015 ◽  
Vol 49 ◽  
pp. 445-451 ◽  
Author(s):  
Hazem M. Abu Shawish ◽  
Hassan Tamous ◽  
Salman M. Saadeh ◽  
Khalid I. Abed-Almonem ◽  
Osama Al khalili
Keyword(s):  
Detection Limit ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
New Approach
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