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Journal articles on the topic 'Potentiometry'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Zimmermann, Peter, Andreas Weltin, Gerald Urban, and Jochen Kieninger. "Active Potentiometry for Dissolved Oxygen Monitoring with Platinum Electrodes." Sensors 18, no. 8 (2018): 2404. http://dx.doi.org/10.3390/s18082404.

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Potentiometric oxygen monitoring using platinum as the electrode material was enabled by the combination of conventional potentiometry with active prepolarization protocols, what we call active potentiometry. The obtained logarithmic transfer function is well-suited for the measurement of dissolved oxygen in biomedical applications, as the physiological oxygen concentration typically varies over several decades. We describe the application of active potentiometry in phosphate buffered salt solution at different pH and ion strength. Sensitivity was in the range of 60 mV/dec oxygen concentration

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2

Braun, R. D. "Potentiometry and potentiometric titrations." TrAC Trends in Analytical Chemistry 4, no. 5 (1985): xxi. http://dx.doi.org/10.1016/0165-9936(85)87014-x.

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3

Nagels, L. J. "Potentiometric detection for high-performance liquid chromatography is a reality: Which classes of organic substances are the targets?" Pure and Applied Chemistry 76, no. 4 (2004): 839–45. http://dx.doi.org/10.1351/pac200476040839.

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Potentiometric detection in high-performance liquid chromatography (HPLC) is shown to be an underexploited technique. The technique can be of great use to less classical potentiometry targets, such as bioorganics, of low as well as of high molecular weight. The understanding of non-faradaic potentiometry is, however, still problematic. Predicting the selectivity and sensitivity of a potentiometric electrode for organic ionizable substances can be done to a certain extent using QSAR methods. Although many new polymer materials and synthetic receptor molecules for organic ionics are being synthe

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4

Sheet, Partha Sarathi, Suji Park, Pavel Sengupta, and Dipankar Koley. "Multifunctional dendritic molecular probe for selective detection of Cu²⁺ ions using potentiometric and fluorometric techniques." Analyst 146, no. 23 (2021): 7109–17. http://dx.doi.org/10.1039/d1an01417j.

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We have designed and synthesized a multifunctional dendritic molecular probe that selectively detects Cu2+ ions via potentiometric and fluorometric techniques with low detection limits (3.5 μM in potentiometry, 15 nM in fluorometry).

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5

Janata, Jiří. "Potentiometry in gas phase." Collection of Czechoslovak Chemical Communications 74, no. 11-12 (2009): 1623–34. http://dx.doi.org/10.1135/cccc2009101.

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In order to yield analytically useful information every potentiometric measurement requires stable and reproducible reference potential. That requirement has to be satisfied for potentiometry performed in liquid or gas phase alike, although two fundamentally different mechanisms lead to formation of the measurable cell voltage. It is shown that the Fermi level of silicon used in insulated gate field-effect transistors (IGFET) provides an exceptionally stable and robust reference potential. A semi-quantitative dependence of IGFET output on partial pressure of the analyte gas is presented.

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6

Pleniceany, Maria, Marian Isvoranu, and Cezar Spinu. "Liquid membrane ion-selective electrodes for potentiometric dosage of coper and nickel." Journal of the Serbian Chemical Society 70, no. 2 (2005): 269–76. http://dx.doi.org/10.2298/jsc0502269p.

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This paper presents experimental and theoretical data regarding the preparation and characterization of three liquid-membrane electrodes, which have not been mentioned in the specialized literature so far. The active substances, the solutions of which in nitrobenzene formed the membranes on a graphite rod, are simple complex combinations of Cu(II) and Ni(II) ions with an organic ligand belonging to the Schiff base class: N-[2-thienylmethilidene]-2-aminoethanol (TNAHE). The Cu2+ -selective and Ni2+ -selective electrodes were used to determine the copper and nickel ions in aqueous solutions, bot

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7

Kay, C. J., M. J. Barber, B. A. Notton, and L. P. Solomonson. "Oxidation–reduction midpoint potentials of the flavin, haem and Mo-pterin centres in spinach (Spinacia oleracea L.) nitrate reductase." Biochemical Journal 263, no. 1 (1989): 285–87. http://dx.doi.org/10.1042/bj2630285.

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Oxidation-reduction midpoint potentials have been determined for the flavin, cytochrome b557 and Mo-pterin prosthetic groups of spinach (Spinacia oleracea L.) assimilatory nitrate reductase using visible, c.d. and room-temperature e.p.r. potentiometric titrations. At pH 7 and 25 degrees C, the midpoint potential for the FAD/FADH2 couple was determined by c.d. potentiometry to be -280 +/- 10 mV (n = 2). The redox potential for reduction of the haem was determined by visible potentiometry to be -123 +/- 10 mV (n = 1), significantly lower than the previously published value of -60 mV [Fido, Hewit

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8

Gerasimova, Elena, Elena Gazizullina, Sofya Kolbaczkaya, and Alla Ivanova. "The Novel Potentiometric Approach to Antioxidant Capacity Assay Based on the Reaction with Stable Radical 2,2′-diphenyl-1-picrylhydrazyl." Antioxidants 11, no. 10 (2022): 1974. http://dx.doi.org/10.3390/antiox11101974.

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For the first time, new possibilities of using the DPPH• as a signal-forming oxidant molecule with potentiometric detection are shown. The CV method confirmed the presence of a quasi-reversible potential-determining system DPPH•/DPPH-H under experimental conditions. This fact makes it possible to use DPPH• as the model of the oxidizing agent for obtaining an analytical signal by the potentiometry method. The potentiometric approach makes it possible to obtain the value of the Nernst slope and the antioxidant capacity in one experiment. It consists of an antioxidant supplement and two consecuti

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9

Hitchman, Michael L., and Frazier W. M. Nyasulu. "Potentiometric monitoring of proteins—part 6. Indirect potentiometry." Talanta 40, no. 9 (1993): 1449–59. http://dx.doi.org/10.1016/0039-9140(93)80225-g.

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10

Brooks, Charles L., Franklyn Garry, and Margaret S. Swartout. "Effect of an interfering substance on determination of potassium by ion-specific potentiometry in animal urine." American Journal of Veterinary Research 49, no. 5 (1988): 710–14. https://doi.org/10.2460/ajvr.1988.49.05.710.

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SUMMARY Analytical characteristics of photometry and ion-specific potentiometry for urine from sheep, horses, cows, dogs, and cats were determined, using solutions of sodium and potassium chloride. The performance of both methods were acceptable, but the ion-specific potentiometer (in the mode for urine analysis) was superior in terms of linearity of response and correlation between actual vs measured concentrations. Coefficients of variation of either method for repeated analyses of various concentrations of sodium and potassium were always < 2.5%. The measurement of sodium concentration i

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11

Vytřas, Karel, Ivan Svancara, and Radovan Metelka. "Carbon paste electrodes in electroanalytical chemistry." Journal of the Serbian Chemical Society 74, no. 10 (2009): 1021–33. http://dx.doi.org/10.2298/jsc0910021v.

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An overview is given dealing with the applications of carbon paste electrodes in equilibrium potentiometry as well as in electrochemical stripping analysis using both voltammetric and potentiometric modes. Various modifications of carbon pastes and carbon paste-based biosensors are also mentioned. The main emphasis in this article is directed at summarizing recent results of the authors' research group during the past few years.

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12

Guagnellini, E., G. Spagliardi, G. Bernardi, and P. Stella. "Reliability of IL Monarch ion-selective electrode module for sodium, potassium, and chloride measurements." Clinical Chemistry 34, no. 4 (1988): 746–48. http://dx.doi.org/10.1093/clinchem/34.4.746.

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Abstract We evaluated the IL Monarch random-access centrifugal analyzer for measurement of Na+, K+, and Cl- by an indirect potentiometric method. For different concentrations of control material, the total precision (CV) ranged between 0.82% and 1.14% for the three electrolytes; linearity was acceptable within a range of 103 to 215 mmol/L for Na+, 1.6-15.25 mmol/L for K+, and 80-173 mmol/L for Cl-. Data correlated well with those by flame photometry for Na+ and K+ and with those by coulometry for Cl-, both for various biological materials--sera, urines, dialysis fluids--and commercial control

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13

Aguirre-Londoño, Jessica, Víctor Alexander Aristizabal-Ferreira, Sandra Patricia Castro-Narváez, and Juan Sebastián Ramírez-Navas. "Conductimetry: a rapid alternative technique for chlorides determination in cheese." Universitas Scientiarum 24, no. 2 (2019): 307–22. http://dx.doi.org/10.11144/javeriana.sc24-2.cara.

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The correlation of two instrumental techniques for chlorides determination in Colombian cheese, Queso Molido Nariñense (a type of white cheese), was analyzed. Potentiometry of chloride precipitation is the standard technique to determined salt in cheese. Conductimetry is an alternative technique. Samples of Queso Molido Nariñense were made. In the processed cheeses the salt concentration (NaCl: 0.5 %, 0.8 %, 1.0 %, 2.0 %, 3.0% and 6.0 %) was varied. Chlorides were determined by titration with silver nitrate in the potentiometric technique. In the conductimetric technique, each sample was analy

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14

Pálla, Tamás, Károly Mazák, Dania Mohammed Alkhazragee, György Tibor Balogh, Béla Noszál, and Arash Mirzahosseini. "Comparison of Orthogonal Determination Methods of Acid/Base Constants with Meta-Analysis." International Journal of Molecular Sciences 25, no. 23 (2024): 12727. http://dx.doi.org/10.3390/ijms252312727.

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The accurate determination of acid/base constants (proton dissociation constants—pKa, or equivalently protonation constants—logK) is essential for the physicochemical characterization of new molecules, especially in drug design and development, as these parameters thoroughly influence the pharmacokinetics and pharmacodynamics of drug action. While pH/potentiometric titration remains the gold standard method for determining acid/base constants, spectroscopic techniques—particularly nuclear magnetic resonance spectroscopy (as NMR/pH titrations)—have emerged as powerful alternatives for specific

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15

Maria, Pleniceanu, Isvoranu Maria, and Spînu Cezar. "New electrochemical sensors used for potentiometric determination of copper and nickel." Journal of Indian Chemical Society Vol. 79, Nov 2002 (2002): 884–86. https://doi.org/10.5281/zenodo.5847751.

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Faculty ofChemistry, University ofCraiova, A. I. Cuza 13, Romania E-mail : adychem@yahoo.com Fax : 40-51-1 97048 <em>Manuscript received 17 July 2001, revised 17 May 2002, accepted 12 June 2002</em> The paper presents the experimental and theoretical data regarding the preparation, characterization and analytical applications of four liquid-membrane electrodes. The active substances whose solutions in nitrobenzene have constituted the membranes on graphite rod, are mixed complex combinations of Cu<sup>II</sup> and Ni<sup>II</sup> ions with two Schiff base ligands <em>N</em>-[2- thienylmethylid

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16

Bakker, Eric, and Ernö Pretsch. "Nanoscale potentiometry." TrAC Trends in Analytical Chemistry 27, no. 7 (2008): 612–18. http://dx.doi.org/10.1016/j.trac.2008.04.007.

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17

Bakker, Eric, and Ernö Pretsch. "Modern Potentiometry." Angewandte Chemie International Edition 46, no. 30 (2007): 5660–68. http://dx.doi.org/10.1002/anie.200605068.

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18

Isvoranu, Marian, Constantin Luca, Maria Pleniceanu, and Cezar Spinu. "Studies on a Pb2+ - selective electrode with a macrocyclic liquid membrane: Potentiometric determination of pb2+ ions." Journal of the Serbian Chemical Society 71, no. 12 (2006): 1345–52. http://dx.doi.org/10.2298/jsc0612345i.

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This paper presents experimental and theoretical data regarding the design, characterization and analytical applications of a non-expensive, liquid-membrane ion-selective electrode for Pb2+ ions. The membrane is a solution of the active complex formed by Pb2+ ions with dibenzo-18-crown-6-ionophore (DB-[18]-C-6) extracted in propylene carbonate (PC). The successful application of the developed electrode for the determination of Pb2+ ions in aqueos solution samples by direct potentiometry and potentiometric titration is presented. For the presented analytical results, there are insignificant sys

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19

Islam, Md Shafiul, and Maryanne M. Collinson. "Improved Sensitivity and Selectivity for the Redox Potentiometric Measurement of Biological Redox Molecules Using Nafion-Coated Platinum Decorated Nanoporous Gold Electrodes." Journal of The Electrochemical Society 169, no. 5 (2022): 057503. http://dx.doi.org/10.1149/1945-7111/ac68a1.

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Sensitivity and selectivity are two important figures of merit in analytical measurements, but in redox potentiometry, they are often limited. In this study, we describe how the potentiometric sensitivity and selectivity can be improved using nanoporous gold (NPG) electrodes with hydrogen peroxide, dopamine, ascorbic acid, and a mixture of dopamine and ascorbic acid as the test analytes. The results show that the addition of platinum (Pt) to the nanoporous framework significantly improves electrode sensitivity for the analytes studied. Furthermore, it was only possible to potentiometrically de

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20

Muralt, P., and D. W. Pohl. "Scanning tunneling potentiometry." Applied Physics Letters 48, no. 8 (1986): 514–16. http://dx.doi.org/10.1063/1.96491.

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21

Manzo, Ruben H., and Ernestina Luna. "Differential scanning potentiometry." Analytical Chemistry 58, no. 6 (1986): 1055–57. http://dx.doi.org/10.1021/ac00297a016.

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22

Möller, R. "Scanning noise potentiometry." Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures 9, no. 2 (1991): 609. http://dx.doi.org/10.1116/1.585468.

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23

Jagner, Daniel, and Yudong Wang. "Coulometric stripping potentiometry." Electroanalysis 7, no. 7 (1995): 614–18. http://dx.doi.org/10.1002/elan.1140070703.

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24

Fernandes, J. C. B., and E. V. Heinke. "Alternative strategy for manufacturing of all-solid-state reference electrodes for potentiometry." Journal of Sensors and Sensor Systems 4, no. 1 (2015): 53–61. http://dx.doi.org/10.5194/jsss-4-53-2015.

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Abstract. This paper presents an alternative strategy for manufacturing solid-state reference electrodes based on particles of graphite/silver/silver chloride synthesized by electroless deposition of metallic silver and silver chloride on graphite powder. Two kinds of reference electrodes were manufactured by mixing these particles with epoxy resin and hardener: quasi-reference and all-solid-state containing salts of alkaline or alkaline earth metals. All-solid-state reference electrodes can be sterilized with high-pressure saturated steam at 394.15 K (121 °C) using an autoclave. These electro

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25

Yadav, Amar Prasad. "Preparation of Low Cost Solid State Silver Sulfide Based Bromide Selective Electrodes." Journal of Nepal Chemical Society 27 (August 22, 2012): 100–106. http://dx.doi.org/10.3126/jncs.v27i1.6668.

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Preparation and performance of a cost effective silver sulfide based bromide selective membrane is described. A solid contact between membrane and body of the electrode was examined as an ion-selective electrode by determining S2- and Br- ions by direct potentiometry. A linear response to bromide ion from 2 x 10-5 to 10-1 M with a slope of 57.3 mV per decade [Br-] is observed. The membrane has a very short response. It gives excellent results as an indicator electrode for potentiometric titration.DOI: http://dx.doi.org/10.3126/jncs.v27i1.6668 J. Nepal Chem. Soc., Vol. 27, 2011 100-106

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26

Khasanah, Miratul, Alfa Akustia Widati, Nadya Maya Severia, et al. "Carbon Paste Electrode-Modified Imprinted Zeolite X and Its Performance as a Potentiometric and Voltammetric Sensor for Cholesterol Analysis." Indonesian Journal of Chemistry 25, no. 2 (2025): 482. https://doi.org/10.22146/ijc.99700.

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Carbon paste electrode-modified imprinted zeolite X has been developed as a potentiometry and voltammetry sensor to monitor cholesterol levels in the body. This is crucial to detect early health risks caused by high cholesterol levels. The modified electrode was fabricated with a mass ratio of activated carbon, paraffin, and imprinted zeolite X of 12:7:1. Potentiometric measurement produced a linear dynamic range of 10−6–10−3 M, Nernst factor of 27.12 mV/decade, a detection limit of 1.12 × 10−6 M, precision of 99.7% (n = 3), and accuracy of 99.8% (n = 5). Using the electrode for up to 56 measu

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27

Nakov, Natalija, Jelena Acevska, Katerina Brezovska, and Aneta Dimitrovska. "Overview on chromatographic and potentiometric based approaches for pKa determination of sparingly soluble substances." Macedonian Pharmaceutical Bulletin 63, no. 02 (2018): 21–27. http://dx.doi.org/10.33320/maced.pharm.bull.2017.63.02.003.

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The dissociation constant (pKa) is one of the most important physicochemical property of the compounds and it is of great importance for the pharmaceutical industry. Many of the active pharmaceutical ingredients are sparingly soluble in water or have no chromophore, thus the conventional UV/Vis spectrometry and potentiometry methods are not applicable. This article presents an overview of several approaches based on RP-HPLC and cosolvent/surfactant potentiometry that have been recently published for the pKa determination of sparingly soluble active pharmaceutical ingredients. Additionally, dif

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28

Mulyasuryani, Ani, Anna Roosdiana, and Arie Srihardyastutie. "THE POTENTIOMETRIC UREA BIOSENSOR USING CHITOSAN MEMBRANE." Indonesian Journal of Chemistry 10, no. 2 (2010): 162–66. http://dx.doi.org/10.22146/ijc.21454.

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Potentiometric urea biosensor development is based on urea hydrolysis by urease resulted CO2. The biosensor is used chitosan membrane and the H3O+ electrode as a transducer. The research was studied of effecting pH and membrane thickness to the biosensor performance. The best biosensor performance resulted at pH = 7.3 and 0.2 mm of membrane thickness. The biosensor has a Nerntian factor 28.47 mV/decade; the concentration range is 0.1 up to 6.00 ppm; and the limit of detection is 0.073 ppm. The response time of this biosensor is 280 seconds, efficiency 32 samples and accuracy 94% up to 99%. Key

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29

Jobst, Johannes, Jaap Kautz, Maria Mytiliniou, Rudolf M. Tromp, and Sense Jan van der Molen. "Low-energy electron potentiometry." Ultramicroscopy 181 (October 2017): 74–80. http://dx.doi.org/10.1016/j.ultramic.2017.05.015.

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30

Bakker, Eric, and Ernö Pretsch. "Potentiometry at trace levels." TrAC Trends in Analytical Chemistry 20, no. 1 (2001): 11–19. http://dx.doi.org/10.1016/s0167-2940(01)90073-1.

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31

Düzgün, Ali, Gustavo A. Zelada-Guillén, Gastón A. Crespo, Santiago Macho, Jordi Riu, and F. Xavier Rius. "Nanostructured materials in potentiometry." Analytical and Bioanalytical Chemistry 399, no. 1 (2010): 171–81. http://dx.doi.org/10.1007/s00216-010-3974-3.

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32

Hongguang, Zhang, and Jin Wenrui. "Investigations of adsorption potentiometry." Journal of Electroanalytical Chemistry 356, no. 1-2 (1993): 171–79. http://dx.doi.org/10.1016/0022-0728(93)80519-n.

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33

Rizov, Ivelin, and Liliana Ilcheva. "Differential flow injection potentiometry." Analytica Chimica Acta 311, no. 2 (1995): 175–81. http://dx.doi.org/10.1016/0003-2670(95)00187-5.

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34

Jin, Wenrui, and Junying Wang. "Investigations on adsorption potentiometry." Journal of Electroanalytical Chemistry and Interfacial Electrochemistry 306, no. 1-2 (1991): 31–40. http://dx.doi.org/10.1016/0022-0728(91)85220-j.

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35

YANG, SUSIE XIURU, K. L. CHENG, L. T. KURTZ, and T. R. PECK. "SUSPENSION EFFECT IN POTENTIOMETRY." Particulate Science and Technology 7, no. 3 (1989): 139–52. http://dx.doi.org/10.1080/02726358908906533.

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36

Yamasue, Kohei, and Yasuo Cho. "Scanning nonlinear dielectric potentiometry." Review of Scientific Instruments 86, no. 9 (2015): 093704. http://dx.doi.org/10.1063/1.4930181.

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37

Jin, Wenrui, Yanhong Zheng, and Xia Qu. "Investigations on adsorption potentiometry." Analytica Chimica Acta 262, no. 1 (1992): 123–27. http://dx.doi.org/10.1016/0003-2670(92)80016-z.

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38

Jin, Wenrui, Li Xiao, and Yan Wu. "Investigations on adsorption potentiometry." Analytica Chimica Acta 280, no. 1 (1993): 69–74. http://dx.doi.org/10.1016/0003-2670(93)80243-e.

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39

Hitchman, Michael L., and Frazier W. M. Nyasulu. "Potentiometric monitoring of proteins. Part 3.—Direct potentiometry with a copper electrode." Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases 82, no. 4 (1986): 1223. http://dx.doi.org/10.1039/f19868201223.

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40

Bakker, Eric. "A Scientific Journey with Ionophore-based Sensors." CHIMIA International Journal for Chemistry 74, no. 7 (2020): 569–76. http://dx.doi.org/10.2533/chimia.2020.569.

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This article describes selected historical milestones in the field of neutral ionophore-based sensors, starting with the first discovery by Wilhelm Simon and their impact to analytical sciences despite the initial difficulty to understand their function. The reader is then guided through topics in which the author has been involved over the years, from understanding thermodynamic aspects to the field of non-equilibrium potentiometry, polyion sensors, trace level potentiometry, instrumentally controlled ion sensors and finally potentiometry involving local perturbations and transient currents t

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41

Foti, Claudia, and Ottavia Giuffrè. "Interaction of Ampicillin and Amoxicillin with Mn2+: A Speciation Study in Aqueous Solution." Molecules 25, no. 14 (2020): 3110. http://dx.doi.org/10.3390/molecules25143110.

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A potentiometric and UV spectrophotometric investigation on Mn2+-ampicillin and Mn2+-amoxicillin systems in NaCl aqueous solution is reported. The potentiometric measurements were carried out under different conditions of temperature (15 ≤ t/°C ≤ 37). The obtained speciation pattern includes two species for both the investigated systems. More in detail, for system containing ampicillin MLH and ML species, for that containing amoxicillin, MLH2 and MLH ones. The spectrophotometric findings have fully confirmed the results obtained by potentiometry for both the systems, in terms of speciation mod

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42

Yao, Yao, Yibin Ying, and Jianfeng Ping. "Development of a Graphene Paper-Based Flexible Solid-Contact Lead Ion-Selective Electrode and its Application in Water." Transactions of the ASABE 62, no. 2 (2019): 245–52. http://dx.doi.org/10.13031/trans.12906.

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Abstract. A graphene paper-based flexible solid-contact ion-selective electrode (SC-ISE) was developed to detect lead ion sensitively. Graphene paper obtained via a simple vacuum filtration method was used as the electrode substrate for direct coating of an ion-selective membrane. The Nernstian slope of the prepared paper-based potentiometric sensor toward lead ion detection was demonstrated as 29.4 mV per decade. A detection limit as low as 2.5 × 10-7 mol L-1 was achieved. Reversed chronopotentiometry and water layer test revealed that the graphene paper-based SC-ISE possessed excellent poten

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43

Izzati, Izzati, Suheryanto Suheryanto, and Poedji Loekitowati Hariani. "Development of a Concentration Cell Potentiometric Method for Fe2+ and Fe3+ Speciation." Indonesian Journal of Fundamental and Applied Chemistry 8, no. 3 (2023): 115–19. http://dx.doi.org/10.24845/ijfac.v8.i3.115.

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The speciation of Fe2+ and Fe3+ iron ions using the concentration cell potentiometric method has been developed. The determination and speciation of metals that have been used include potentiometry using comparison electrodes, selective ion electrodes, and voltammetry. The concentration cell potentiometric method has the advantages of simple equipment, the use of common metal electrodes, high selectivity, and relatively low detection limits. The method validation results for Fe2+ and Fe3+ ion speciation was LOD: Fe2+ 0.22 mg/L and Fe3+ 0.29, LOQ: Fe2+ 0.92 mg/L and Fe3+ 0.01 mg/L; precision (1

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44

Suljkanović, Mersiha, Malgorzata Grabarczyk, Cecylia Wardak, Marzena Adamczyk, and Karolina Pietrzak. "Electrochemical sensors as simple and cheap devices for rapid determination of various species in environmental samples." Environmental engineering 6, no. 1 (2019): 1–6. http://dx.doi.org/10.37023/ee.6.1.1.

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The electrochemical methods are very good tool for determination of trace concentrations of various species in water samples. The analysis carried out using these methods are usually simple, fast and also the cost of the required equipment is much lower comparing to other instrumental methods. Furthermore, the electroanalytical methods are easy to automate and computerize. Among five major groups of these methods (potentiometry, voltammetry, coulometry, conductometry and dielectrometry), potentiometry and voltammetry attract the greatest attention of researchers. In this paper, experimental re

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45

Lenar, Nikola, Robert Piech, and Beata Paczosa-Bator. "Poly(3,4-ethylenedioxythiophene) and Poly(3-octylthiophene-2,5-diyl) Molecules as Composite Transducers in Potentiometric Sensors—Synthesis and Application." International Journal of Molecular Sciences 25, no. 22 (2024): 12381. http://dx.doi.org/10.3390/ijms252212381.

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The aim of this paper is to investigate the influence of the molecules of conducting polymers on the properties of potentiometric sensors. Two conducting polymers, poly(3-octylthiophene-2,5-diyl) and poly(3,4-ethylene-1,4-dioxythiophene), were compared in the context of the design of ion-selective electrodes. This study offers a comparison of the most popular conducting polymers in the context of the design of potentiometric sensors. Firstly, the properties of both materials, such as their microstructure, electrical performance, wettability, and thermic properties, were examined. Subsequently,

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46

Derouicha, Matmour, Zohra Hadjadj Aoul Fatima, and Houari Toumi. "Comparative Utilization of Potentiometric Titration and HPLC Methods for Content Determination of Propranolol Raw Material." Pharmaceutical and Chemical Journal 6, no. 1 (2019): 49–52. https://doi.org/10.5281/zenodo.13931555.

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This study describes an application and comparative evaluation of a HPLC and potentiometric titration methods to quantify the content of Propranolol in raw material. HPLC analysis were carried out using a C18 column and mobile phase composed of 1.6 g sodium lauryl sulfate, 0.31 g tetrabutylammonium dihydrogen phosphate, 1 ml sulfuric acid, 450 ml of water and 550 ml acetonitrile, with a flow rate of 1.8 ml/min and UV detection at 292 nm. The titration method of Propranolol was carried out using sodium hydroxide 0.1M as titrant and ethanol as solvent. The end point was potentiometrically determ

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47

Kholifa, Mulik, Tri Mulyono, and Yeni Maulidah Muflihah. "Simultaneous Determination of Magnesium (Mg2+) and Ammonium (NH4+) by Flow Injection Analysis." Jurnal ILMU DASAR 19, no. 1 (2018): 1. http://dx.doi.org/10.19184/jid.v19i1.5483.

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An automatic method for the simultaneous determination of magnesium and ammoniun by flow injection analysis is described. This analysis used two detectors, potentiometry and spectrophotometry, for the determination of magnesium and ammonium simultaneously. Potentiometric detectors are used to detect ammonium ions, whereas spectrophotometer detectors are used to detect the presence of magnesium ions. The performance of the FIA system includes linear range linearity, limit of detection, sensitivity, reproducibility and recovery test. Spectrophotometry FIA showed good performance with several cri

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48

Hassan, Saad S. M., and Mona A. Ahmed. "Polyvinyl Chloride Matrix Membrane Electrodes for Manual and Flow Injection Analysis of Chloroquine in Pharmaceutical Preparations." Journal of AOAC INTERNATIONAL 74, no. 6 (1991): 900–905. http://dx.doi.org/10.1093/jaoac/74.6.900.

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Abstract Two types of polyvinyl chloride (PVC) matrix membrane electrodes responsive to the antimalarial drug chloroquine have been constructed, electrochemically evaluated, compared, and used in pharmaceutical analysis. Type 1 is the classic PVC model with chloroquine-tetraphenylborate (TPB) sensor; Type 2 is a coated silver disk without internal filling solution. Both electrode types exhibited rapid linear potentiometric response to the logarithmic concentration of diprotonated chloroquine cation in the 10−1–10−6M range with calibration slopes 28-30 mV/concentration decade over the pH range

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49

Boeyckens, Ann, Jan Schots, Hugo Vandenplas, Freedy Senesael, Wim Goedhuys, and Frans K. Gorus. "Ektachem Slides for Direct Potentiometric Determination of Sodium in Plasma: Effect of Natremia, Blood pH, and Type of Electrolyte Reference Fluid on Concordance with Flame Photometry and Other Potentiometric Methods." Clinical Chemistry 38, no. 1 (1992): 114–18. http://dx.doi.org/10.1093/clinchem/38.1.114.

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Abstract With electrolyte reference fluid (ERF)00, results from Kodak Ektachem slides for the direct potentiometric assay of sodium in plasma were significantly correlated with results from flame photometry, but also appeared to be systematically higher, especially in hypernatremic patients. Indirect potentiometry with the Technicon RA-1000 yielded intermediate values. In 23 hypernatremic patients with greater than or equal to 6 mmol/L difference in sodium between Ektachem ERF00 and flame photometry, a clinical survey disclosed the frequent association of large between-method differences with

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50

Ma, Ming Ming, Zhi Tong, and Yong Wen. "Poly Silk Peptide Film PH Sensor Based on Zero Current Potentiometry." Advanced Materials Research 450-451 (January 2012): 554–56. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.554.

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A poly silk peptide film pH sensor has been developed using zero current potentiometry system. A poly silk peptide film coated pencil graphite electrode is connected in series between the working and counter electrodes of a potentiostat, and immersed in solution together with a reference electrode. When the solution pH varies, the resulting zero current potentiometry is linear with the values of the solution pH in the range of 1.81 to 11.58. This pH sensor shows high stability, accuracy, selectivity and reproduction.

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