Influence of cobalt chloride concentration on the selectivity of a tetrathiocyanocobaltate-selective electrode to thiocyanate

2013 ◽  
Vol 69 (1) ◽  
pp. 31-35
Author(s):  
E. M. Rakhman’ko ◽  
Yu. V. Matveichuk ◽  
L. S. Stanishevskii ◽  
V. V. Yasinetskii
Keyword(s):  
Cobalt Chloride ◽  
Chloride Concentration ◽  
Selective Electrode

scholarly journals Spurious Hyperchloremia and Negative Anion Gap in a Child with Refractory Epilepsy

2016 ◽  
Vol 2016 ◽  
pp. 1-3
Author(s):  
Madhuradhar Chegondi ◽  
Balagangadhar R. Totapally
Keyword(s):  
Refractory Epilepsy ◽  
Chloride Concentration ◽  
Blood Chemistry ◽  
Anion Gap ◽  
Selective Electrode ◽  
Chloride Level ◽  
Plasma Chloride ◽  
Electrode Method ◽  
High Chloride ◽  
Negative Anion Gap

We report a case with spurious hyperchloremia with negative anion gap in a child who was taking potassium bromide for refractory epilepsy. Blood chemistry showed a high chloride level (171 mEq/L) and a negative anion gap (−52 mEq/L). Plasma chloride concentration is measured by an ion-selective electrode method; however the presence of other anions like bromide and iodides can interfere with chloride level and largely overestimates the chloride concentration. Thus hyperchloremia with a negative anion gap is a clue to the diagnosis of halides like bromide and iodide ingestion.

Direct Measurement of Chloride in Sweat with an Ion-Selective Electrode

1973 ◽  
Vol 19 (7) ◽  
pp. 727-730 ◽  
Author(s):  
LaVerne Szabo, Margaret ◽  
A Kenny ◽  
Winnie Lee
Keyword(s):  
Direct Measurement ◽  
Chloride Concentration ◽  
Ion Selective Electrode ◽  
Selective Electrode ◽  
Sweat Chloride ◽  
Insufficient Amount ◽  
Chloride Concentrations

Abstract The use of a specific ion electrode for measuring sweat chloride has not been widely accepted because of poor precision and occasional falsely elevated chloride concentrations. We have studied this technique by using the Orion sweat-chloride instrument, and have eliminated these problems by modifying the methodology. An insufficient amount of sweat for determination with the electrode was responsible for both the imprecision and random inaccuracies. The following modifications eliminated these problems: (a) We freshly saturate felt pads with a solution of, per deciliter, 400 mg of pilocarpine nitrate and 1 g of NaHCO3 to replace the electrolyte pads supplied by the Orion Co. (b) The timed iontophoresis period commences after the meter indicates conduction of adequate current. (c) After iontophoresis, sweat is collected for 10 min under a plastic cap held over the induction area. Then chloride concentration is measured with the electrode. With these improvements in technique, the revised procedure should be as reliable as reference methodologies.

scholarly journals Theoretical description of the ligand function for ionoselective electrodes reversible to metal anion complexes. 3. Modeling of the electrode response in ligand and foreign ions solutions using the multi-species approach model

2021 ◽  
pp. 36-49
Author(s):  
Vladimir V. Egorov ◽  
Andrei V. Siamionau ◽  
Andrei D. Novakovskii ◽  
Yauhen B. Akayeu
Keyword(s):  
Phase Boundary ◽  
Chloride Concentration ◽  
Theoretical Description ◽  
Formation Processes ◽  
Adequate Description ◽  
Selective Electrode ◽  
Electrode Function ◽  
Foreign Ions ◽  
Diffusion Controlled ◽  
Diffusion Flows

A description for the ligand function of the tetrathiocyanatozincate selective electrode, has been proposed, using a multi-species approach model. This model takes into account simultaneous phase-boundary, diffusion-controlled, processes of ion exchange between tetrathiocyanatozincate, thyocyanate and foreign ions unable to form zinc complexes, as well as distribution of the neutral zinc complex between phases, partial decomposition of quaternary ammonium tetrathiocyanatozincate salt and stepwise complex formation processes in water phase. The model is based on solving the system of equations describing several interphase and intraphase equilibria, assuming that diffusion flows of all membrane and solution components at the phase boundary are stationary. It provides the adequate description of tetrathiocyanatozincate selective electrode in solutions of the ligand, foreign ions and mixed solutions of the above, and predicts the effect of zinc chloride concentration in the sample solution upon electrode function slopes, lower detection limits and selectivity coefficients.

Recommendation for measuring and reporting chloride by ISEs in undiluted serum, plasma or blood: International Federation of Clinical Chemistry and Laboratory Medicine (IFCC): IFCC Scientific Division, Committee on Point of Care Testing and Working Group on Selective Electrodes

2006 ◽  
Vol 44 (3) ◽  
Author(s):  
Mohammed C. Ben Rayana ◽  
Robert W. Burnett ◽  
Arthur K. Covington ◽  
Paul D'Orazio ◽  
Niels Fogh-Andersen ◽  
...  
Keyword(s):  
Clinical Chemistry ◽  
Point Of Care ◽  
Chloride Concentration ◽  
Water Concentration ◽  
Laboratory Medicine ◽  
Ion Selective Electrodes ◽  
Point Of Care Testing ◽  
Selective Electrode ◽  
Undiluted Serum ◽  
Reduced Water

AbstractThe proposed recommendation for measuring and reporting chloride in undiluted plasma or blood by ion-selective electrodes (ISEs) will provide results that are identical to chloride concentrations measured by coulometry for standardized normal plasma or blood samples. It is applicable to all current ISEs dedicated to chloride measurement in undiluted samples that meet the requirements. However, in samples with reduced water concentration, results by coulometry are lower than by ion-selective electrode due to volume displacement. The quantity measured by this standardized ISE procedure is called the ionized chloride concentration. It may be clinically more relevant than the chloride concentration as determined by coulometry, photometry or by ISE after dilution of the sample.

STUDY OF SERUM ELECTROLYTES IMBALANCES IN FEMALE THYROID PATIENTS AT AIIMS, PATNA: A HOSPITAL BASED COMPARATIVE STUDY.

2019 ◽  
Vol 3 (6) ◽  
Author(s):  
Dr. Jyoti Kumari ◽  
Dr. Dev Kant ◽  
Dr. Mala Mahto
Keyword(s):  
Standard Deviation ◽  
Early Detection ◽  
P Value ◽  
Selective Electrode ◽  
Serum Electrolytes ◽  
Sodium Potassium ◽  
Paired Samples ◽  
Electrode Method ◽  
Hypothyroid Patients ◽  
Key Words Hypothyroidism

Objectives: This present study was to compare the serum electrolytes (Na, K and Cl) imbalances in hypothyroidism, hyperthyroidism with euthyroidism female cases. Methods: A detail history, clinical examinations and relevant investigations were performed to all female thyroid cases. Thyroid hormones were estimated by chemiluminiscence method using Siemens Advia Centaur XP instrument. Electrolyte levels (Na+, k+ & Cl-) were measured by ion selective electrode method using Eschweiler combi. Results: Data was analyzed with the help of SPSS (version 26) software. Paired samples statistics was used. Mean ± standard deviation and t value were calculated. P value was taken less than or equal to 0.05 (p ≤ 0.05) for significant differences. Conclusions: This present study concluded that electrolytes sodium, potassium and chloride levels were significantly reduced in hypothyroidism female cases compared to euthyroids female (controls). This suggests that hypothyroid patients should be regularly checked for serum electrolytes. Early detection and treatment can prevent the further complications related to the disorder and will be helpful during the management of thyroid patients. Key words: Hypothyroidism, hyperthyroidism, euthyroidism, electrolytes.

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