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Journal articles on the topic 'Potentiometric titration'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Gibson, Graham, Alexei A. Neverov, and R. S. Brown. "Potentiometric titration of metal ions in methanol." Canadian Journal of Chemistry 81, no. 6 (2003): 495–504. http://dx.doi.org/10.1139/v03-035.

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The potentiometric titrations of nine lanthanideIII triflates, ZnII and CuII triflate, and the NiII, CoII, MgII, and TiIV perchlorates were obtained in methanol to determine the titration constants (defined as the sspH at which the [OCH3]/[Mx+]t ratios are 0.5 and 1.5) as well as the apparent sspKa values for deprotonation of the metal-bound solvent molecules. The titrations were performed under various conditions with and without added salts as electrolytes, and the variations in the titration constants are discussed. In selected cases (La3+, Zn2+) the titration profiles were analyzed using

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2

Price, Randi, and Ping Wan. "Determination of Quaternary Ammonium Compounds by Potentiometric Titration with an Ionic Surfactant Electrode: Single-Laboratory Validation." Journal of AOAC INTERNATIONAL 93, no. 5 (2010): 1542–52. http://dx.doi.org/10.1093/jaoac/93.5.1542.

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Abstract A potentiometric titration for determining the quaternary ammonium compounds (QAC) commonly found in antimicrobial products was validated by a single laboratory. Traditionally, QACs were determined by using a biphasic (chloroform and water) manual titration procedure. Because of safety considerations regarding chloroform, as well as the subjectivity of color indicator-based manual titration determinations, an automatic potentiometric titration procedure was tested with quaternary nitrogen product formulations. By using the Metrohm Titrando system coupled with an ionic surfactant elect

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3

Gündüz, Turgut, Esma Kiliç, Güleren Özkan, Muhammed F. Awaad, and Mustafa Tastekin. "Conductimetric and potentiometric investigation of effect of acidity on formation of homoconjugates in acetonitrile solvent." Canadian Journal of Chemistry 68, no. 5 (1990): 674–78. http://dx.doi.org/10.1139/v90-103.

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In the present work, 11 aromatic and nine aliphatic carboxylic acids, namely benzoic, 2-nitrobenzoic, 3-nitrobenzoic, 4-nitrobenzoic, 2,4-dinitrobenzoic, 3,5-dinitrobenzoic, 2-aminobenzoic, 3-aminobenzoic, 4-aminobenzoic, o-phthalic, salicylic, formic, acetic, monochloroacetic, dichloroacetic, trichloroacetic, propionic, n-butyric, caprylic, and myristic acids, were titrated conductimetrically and potentiometrically with triethylamine in acetonitrile solvent, under a nitrogen atmosphere, at 25 °C. Closer investigation of the conductimetric titration curves of these acids showed that the acidit

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4

Zhang, Lina, Toshiyuki Takematsu, and Takashi Norisuye. "Potentiometric titration of xanthan." Macromolecules 20, no. 11 (1987): 2882–87. http://dx.doi.org/10.1021/ma00177a041.

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5

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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6

Денисов, О. С., та Е. Н. Корчуганова. "ПОТЕНЦИОМЕТРИЧЕСКОЕ ТИТРОВАНИЕ СОЛЕЙ ЦИНКА". Труды БГТУ Серия 2, № 1, № 1 (241) 2021 (12 лютого 2021): 24–29. http://dx.doi.org/10.52065/2520-2669-2021-241-1-24-29.

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7

Sołtysik, Barbara. "A quick method to determine the content of sulfates in silicic and aluminosilicate fillers." Polish Journal of Chemical Technology 9, no. 1 (2007): 33–35. http://dx.doi.org/10.2478/v10026-007-0009-8.

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A quick method to determine the content of sulfates in silicic and aluminosilicate fillers The paper presents the possibility of using barium-selective electrode to a potentiometric determination of sulfates in silicic and aluminosilicate fillers. The results of sulfates potentiometric titration in silicic and aluminosilicate fillers are described. A statistical interpretation of the results was carried out. The recommended method is based on the end-point detection of sulfates potentiometric titration in hydro-alcoholic medium by means of barium chlorate(VII) titrant. The potentiometric titra

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8

Al-Ghannam, Sheikha M., Abdalla M. S. Abulkibash, and Abeer M. Al-Olyyan. "Differential Electrolytic Potentiometric Determination of Some Amino Acids in Dosage Forms." Journal of AOAC INTERNATIONAL 87, no. 3 (2004): 671–76. http://dx.doi.org/10.1093/jaoac/87.3.671.

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Abstract The application of direct-current differential electrolytic potentiometry to the nonaqueous titration of amino acids was investigated. The basic character of amino acids in acetic acid was enhanced to permit their direct titration with perchloric acid. A pair of antimony electrodes was used as an indicating system. The shapes of the titration curves obtained were almost symmetrical with sharp peaks. The optimum current density for those titrations was found to be 1–2 μA/cm2. The procedure was applied successfully to the determination of certain amino acids in drug formulations, and th

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9

Prasad, S., V. D. Leite, R. A. C. Santana, and E. A. Medeiros. "Electrometric studies on formation of cerium vanadates as a function of pH." Eclética Química 31, no. 2 (2006): 31–38. http://dx.doi.org/10.1590/s0100-46702006000200005.

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The precise nature of the reaction between nitric acid and sodium ortho-vanadate solutions has been studied by means of electrometric techniques involving potentiometric and conductometric titrations. The well defined inflections and breaks in the titration curves confirm the existence of the anions, pyro-V2O7(4-), meta-VO3- and poly-H2V10O28(4-) corresponding to the ratios of VO4(3-):H+ as 1:1, 1:2 and 1:2.6 in the neighborhood of pH 10.5, 7.4 and 3.6, respectively. The interaction of cerium(III) nitrate with sodium vanadate solutions, at specific pH levels 12.4, 10.5, 7.4 and 3.6 was also st

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10

Besenhard, J. O., H. P. Gansmann, and H. Meyer. "Bestimmung von Oberflächenoxiden auf Rußen durch potentiometrische Direkttitration in nichtwäßrigen Lösungsmitteln / Determination of Surface Oxides on Carbon Blacks by Direct Potentiometric Titration in Non-Aqueous Solvents." Zeitschrift für Naturforschung B 45, no. 6 (1990): 857–63. http://dx.doi.org/10.1515/znb-1990-0617.

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An attempt is made to quantitatively determine acidic and basic surface oxides on carbon blacks and also to monitor their acid and base strength distribution by direct potentiometric titrations in non-aqueous media.In contrast to direct titration procedures proposed so far, our method allows to distinguish clearly between several types of acidic surface oxides of different acid strength. This is mainly achieved by improvements of the non-aqueous titration media. The total contents of weakly and strongly acidic and also of basic oxides determined by this very fast method is comparable to result

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11

Mustafa, S., A. Naeem, N. Rehana, and H. Y. Samad. "Cation-Exchange Properties of Aluminium(III) Phosphate." Adsorption Science & Technology 13, no. 4 (1996): 261–79. http://dx.doi.org/10.1177/026361749601300404.

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Potentiometric titrations of aluminium(III) phosphate have been performed in the presence of aqueous electrolyte solutions containing Cu2+, Zn2+, Ni2+ and K+ ions as a function of the concentration of the latter, the pH and the temperature. The sorption of Zn2+ ions has also been studied and the data for metal ion sorption shown to correlate with the Potentiometric titration data, indicating that the process responsible for metal ion uptake is ion exchange. The pKa value of the exchanger and its thermodynamic parameters have been evaluated.

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12

Kamalasekaran, Kavitha. "Potentiometric Titration of Vanadium (V) with Iron (II) in the Presence of NTA and DTPA Using Dry-Cell Graphite Electrode." Revista de Chimie 72, no. 3 (2021): 144–58. http://dx.doi.org/10.37358/rc.21.3.8445.

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A sensitive potentiometric titration for vanadium (V) based effect of ligands such as nitrilotriacetic acid (NTA) and diethylenetriaminepenta-acetic acid (DTPA) are reviewed. The potential iron system decreased the presence of NTA and DTPA. In this case, iron (III) increased with respect to the vanadium (IV) volume. The production of iron (III)-ligand complex has increased. This result suggested that the formation of V(V)-NTA and V(V)-DTPA complexes were less favoured than that of V(IV)-NTA and V(IV)-DTPA complexes. The calculated correlation coefficients (r) conveyed the effectiveness of the

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13

Golovko, Dmitriy, Virender Sharma, Olga Pavlova, et al. "Determination of submillimolar concentration of ferrate(VI) in alkaline solutions by amperometric titration." Open Chemistry 9, no. 5 (2011): 808–12. http://dx.doi.org/10.2478/s11532-011-0069-8.

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AbstractA new amperometric titration method was developed for quantitative determination of ferrate(VI) (FeVIO42−) in the 7.06×10−5−5.73×10−3 M concentration range. Chromium(III) hydroxide solution was used as the titrant. The diffusion current (Id) had a linear relationship with the concentration of ferrate(VI) and slopes were dependent on the concentration of NaOH. The amperometric titration could detect a lower concentration of ferrate(VI) than could potentiometric and colorimetric titrations. The method was applied successfully to determine concentrations of ferrate(VI), generated electroc

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14

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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15

Bensacia, Nabila, Saâd Moulay, François Garin, Ioana Fechete, and Anne Boos. "Effect of Grafted Hydroquinone on the Acid-Base Properties of Poly(acrylic acid) in the Presence of Copper (II)." Journal of Chemistry 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/913987.

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Potentiometric titration of poly(acrylic acid) and hydroquinone-functionalized poly(acrylic acid) was conducted in the presence of copper (II). The effects of hydroquinone functionalizing and copper (II) complexing on the potentiometric titration of poly(acrylic acid) were studied in an ionic environment and in its absence. Henderson-Hasselbalch equation was applied to assess its validity for this titration. Coordination number and the stability constants of the copper- (II-)complexed polymers were determined, and results showed the formation of mostly monodentate and bidentate copper- (II-)po

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16

Khil’ko, S. L., A. I. Kovtun, and V. I. Rybachenko. "Potentiometric titration of humic acids." Solid Fuel Chemistry 45, no. 5 (2011): 337–48. http://dx.doi.org/10.3103/s0361521911050028.

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17

Soldatov, V. S. "Potentiometric titration of ion exchangers." Reactive and Functional Polymers 38, no. 2-3 (1998): 73–112. http://dx.doi.org/10.1016/s1381-5148(98)00018-2.

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18

Pezzatini, G., G. Loglio, and S. Becagli. "Potentiometric titration of diprotic systems." Fresenius' Journal of Analytical Chemistry 358, no. 4 (1997): 465–70. http://dx.doi.org/10.1007/s002160050447.

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19

Shul’ga, N. V., L. A. Gomolko, and N. P. Krut’ko. "Potentiometric titration of lignosulfonic acids." Russian Journal of Applied Chemistry 81, no. 7 (2008): 1278–82. http://dx.doi.org/10.1134/s107042720807029x.

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20

Ciesielski, Witold, and Robert Zakrzewski. "Potentiometric Titration of 2-Thiouracils." Archiv der Pharmazie 331, no. 11 (1998): 371–72. http://dx.doi.org/10.1002/(sici)1521-4184(199811)331:11<371::aid-ardp371>3.0.co;2-z.

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21

Zherebtsov, S. I., N. V. Malyshenko, K. M. Shpakodraev, K. S. Votolin, and Z. R. Ismagilov. "Potentiometric Titration of Humic Fractions." Coke and Chemistry 66, no. 8 (2023): 420–24. http://dx.doi.org/10.3103/s1068364x23701077.

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22

Burahta, V. A., and S. S. Sataeva. "MODIFIED SEMICONDUCTION ELECTRODES BASED ON GALLIUM ARSENIDE IN POTENTIOMETRIC TITRATION." Izvestiya of Saratov University. Chemistry. Biology. Ecology 11, no. 1 (2011): 7–11. http://dx.doi.org/10.18500/1816-9775-2011-11-1-7-11.

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Ways of electrochemicals modification surface semiconducting electrode based on gallium arsenide (GaAs) was proposed in this work/ Behavior of unmodified and modified GaAs was investigated characterization was identified (steepness of electrode function, working interval? responses time, reproducibility). Possibility of using electrodes from GaAs for potentiometric titration of ions Cu2+ and Pb2+ was set. Modified GaAs-electrodes has improved electroanalitical characterizations in variants direct potentiometric titration was shown.

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23

Qayoom, Amtul, Syed Arif Kazmi, and Saeeda Nadir Ali. "Turmeric Powder as a Natural Heavy Metal Chelating Agent: Surface Characterisation." Pakistan Journal of Scientific & Industrial Research Series A: Physical Sciences 60, no. 1 (2017): 1–8. http://dx.doi.org/10.52763/pjsir.phys.sci.60.1.2017.1.8.

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The present study was conducted to investigate surface properties of turmeric in order to evaluateits detoxification potential and ability to sequester toxic metals ions. Scanning Electron Microscopy (SEM),Energy Dispersion Spectroscopy (EDS), Infra-Red (IR) spectroscopy and potentiometric titrations wereemployed for characterisation of the surface of turmeric powder. Spectroscopic studies revealed that thesurface of turmeric powder was porous mainly composed of polymeric -OH , -NH , -CH2 , -COO and-OH groups of polysaccharides. From potentiometric titrations and modelling of batch titration d

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24

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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Partanen, Jaakko I., Pekka M. Juusola та Virginie Verraes. "Re-evaluation of the second thermodynamic dissociation constants of α-alanine, valine, and leucine using potentiometric data measured for aqueous potassium chloride solutions at 298.15 K". Canadian Journal of Chemistry 83, № 1 (2005): 46–56. http://dx.doi.org/10.1139/v04-164.

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Equations were developed for the calculation of the second stoichiometric (molality scale) dissociation constants (Km2) of α-alanine, valine, and leucine in aq. KCl solutions at 298.15 K from the revised thermodynamic dissociation constants (Ka2) of these acids and the ionic strength (Im) of the solutions. The ionic strength of the solutions considered in this study is determined mostly by KCl alone, and the equations for Km2 were based on the single-ion activity coefficient equations of the Hückel type. The existing literature data obtained from Harned cell measurements and new potentiometric

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26

Vytřas, Karel, Tomáš Čapoun, Emil Halámek, Jan Souček, and Blanka Štajerová. "Potentiometric ion-pair formation titrations of N-alkyl-N-ethylpyrrolidinium cations using plastic membrane electrodes." Collection of Czechoslovak Chemical Communications 55, no. 4 (1990): 941–50. http://dx.doi.org/10.1135/cccc19900941.

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Cations of the homologous series of N-alkyl-N-ethylpyrrolidinium salts were determined with a good precision by a titration using sodium tetraphenylborate titrant and potentiometric indication with a simple PVC membrane coated-wire electrode. The value of the potentiometric titration break depended on the number of carbon atoms in the alkyl chain. To explain the role of the equilibria involved, the values of both the distribution ratios and the extraction constants as well as the solubility products of N-alkyl-N-ethylpyrrolidinium tetraphenylborates were determined. The value of the titration

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27

Mustafa, S., A. Naeem, N. Rehana, and T. Hussain. "Exchange of Some Divalent Metal Cations and Their Effect on the Dissociation of Iron(III) Phosphate." Adsorption Science & Technology 13, no. 4 (1996): 241–60. http://dx.doi.org/10.1177/026361749601300403.

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Potentiometric titrations of iron(III) phosphate have shown an apparently weak monobasic acid behaviour towards alkali, alkaline earth and divalent transition metal ions. The selectivity sequence and dissociation of the exchanger was found to increase in the order Cu2+ > Zn2+ > Ni2+ > Ca2+ > K+. The dissociation constants of iron(III) phosphate have been determined from Potentiometric titration data in the temperature range 303–323 K. In addition, the exchange of Cu2+, Zn2+ and Co2+ on iron(III) phosphate and the effect of these ions on dissociation were also studied as a function

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28

Piasecki, Wojciech, and Karolina Lament. "Application of Potentiometric and Electrophoretic Measurements to Evaluate the Reversibility of Adsorption of Divalent Ions from a Solution on Titanium Dioxide." Molecules 29, no. 3 (2024): 555. http://dx.doi.org/10.3390/molecules29030555.

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The adsorption of divalent ions on metal oxides is controlled by the pH of a solution. It is commonly assumed that this is a reversible process for pH changes. However, there are reports that the sorption of ions on oxides may not be reversible. To verify this, we used potentiometric titration, ion-selective electrodes (ISEs), and electrokinetic measurements to examine the reversibility of the adsorption of hydrogen ions and three metal ions (Ca2+, Cu2+, and Fe2+) on TiO2. The ferrous ion was used as a reference because its adsorption is entirely irreversible. The surface charge determined by

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29

Abulkibash, Abdallah M., Munir Al-Absi, and Abdul aziz Nabil Amro. "Microtitrimetry by Controlled Current Potentiometric Titration." Журнал аналитической химии 68, no. 1 (2013): 60–63. http://dx.doi.org/10.7868/s0044450213010027.

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Lu, Weiping, and Edward H. Smith. "Modeling potentiometric titration behavior of glauconite." Geochimica et Cosmochimica Acta 60, no. 18 (1996): 3363–73. http://dx.doi.org/10.1016/0016-7037(96)00180-9.

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Anderson, Leif G., Conny Haraldsson, and Roger Lindegren. "Gran linearization of potentiometric Winkler titration." Marine Chemistry 37, no. 3-4 (1992): 179–90. http://dx.doi.org/10.1016/0304-4203(92)90077-n.

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Abulkibash, Abdallah M., Munir Al-Absi, and Abdul aziz Nabil Amro. "Microtitrimetry by controlled current potentiometric titration." Journal of Analytical Chemistry 68, no. 1 (2012): 57–60. http://dx.doi.org/10.1134/s1061934813010024.

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Shi-nan, Xie, Ji Hong, Wu Ai-qin, and Chen Guo-hua. "Potentiometric titration of calcium in seawater." Chinese Journal of Oceanology and Limnology 15, no. 1 (1997): 32–35. http://dx.doi.org/10.1007/bf02850579.

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Hernlem, Bradley J., and Lee-Shin Tsai. "Titration of Chlorine: Amperometric versus Potentiometric." Journal - American Water Works Association 92, no. 12 (2000): 101–7. http://dx.doi.org/10.1002/j.1551-8833.2000.tb09075.x.

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Young, San-Land, Miriam Martino, Carlos Kienzle-Sterzer, and J. Antonio Torres. "Potentiometric titration studies on xanthan solutions." Journal of the Science of Food and Agriculture 64, no. 1 (1994): 121–27. http://dx.doi.org/10.1002/jsfa.2740640118.

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36

Vaishali, R. Patil, and P. Deohate Pradip. "The determination of pharmaceutically important ibuprofen by non-aqueous potentiometric titration method." Journal of Indian Chemical Society Vol. 90, Sep 2013 (2013): 1379–82. https://doi.org/10.5281/zenodo.5789139.

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Department of Chemistry, Shri Radhakisan Laxminarayan Toshniwal College of Science, Akola-444 001,Maharashtra, India <em>E-mail </em>: pradip22209l@yahoo.co.in <em>Manuscript received online 05 December 2012, revised 26 December 2012, accepted 30 December 2012</em> The determination of pharmaceutically important ibuprofen by non-aqueous potentiometric titration method using isopropyl alcohol as the solvent and KOH in isopropyl alcohol as the titrant has been established. The study of effect of solvent and concentration on potentiometric determination of ibuprofen has been carried out followed

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37

Miraminzoda, Farida, Mubashirhon Rakhimova, Erkin Faizullozoda, Jahongul Davlatshoeva, and Gulruhsor Bobonazarzoda. "Effect of citric acid concentration on its dissociated and non-dissociated forms." From Chemistry Towards Technology Step-By-Step 6, no. 1 (2025): 107–11. https://doi.org/10.52957/2782-1900-2025-6-1-107-111.

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The authors have studied the acid-base properties of citric acid by potentiometric titration at a temperature of 298 K and concentrations of CH3Cit(OH) of 0.01 and 0.02 mol/L. The results of potentiometric titration depend on the concentration of substances and the time of setting the equilibrium pH value of the titrated solution. The potentiometric method determined three carboxyl groups of citric acid corresponding to pKa1, pKa2, and pKa3. The values of citric acid dissociation constants for 0.02 mol/L concentration are 2.75, 4.45, and 5.82. The authors constructed the distribution diagrams

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38

Ramamurthy, Narayanan, Narayan Baliga, Joyce A. Wahr, Ulrich Schaller, Victor C. Yang, and Mark E. Meyerhoff. "Improved protamine-sensitive membrane electrode for monitoring heparin concentrations in whole blood via protamine titration§." Clinical Chemistry 44, no. 3 (1998): 606–13. http://dx.doi.org/10.1093/clinchem/44.3.606.

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Abstract An improved protamine-sensitive electrode based on a polymeric membrane doped with the charged ion exchanger dinonylnaphthalenesulfonate (DNNS) is used for monitoring heparin concentrations in whole blood. The electrode exhibits significant nonequilibrium potentiometric response to polycationic protamine over the concentration range of 0.5–20 mg/L in undiluted whole-blood samples. The sensor can serve as a simple end point detector for the determination of heparin via potentiometric titrations with protamine. Whole-blood heparin concentrations determined by the electrode method (n ≥15

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39

Aktaş, Hakan, and Pekcan Ertokuş. "Potentiometric determination of ibuprofen, indomethacin and naproxen using an artificial neural network calibration." Journal of the Serbian Chemical Society 73, no. 1 (2008): 87–95. http://dx.doi.org/10.2298/jsc0801087a.

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In this study, three anti-inflammatory agents, namely ibuprofen, indomethacin and naproxen, were titrated potentiometrically using tetrabutyl?ammonium hydroxide in acetonitrile solvent under a nitrogen atmosphere at 25?C. MATLAB 7.0 software was applied for data treatment as a multivariate calibration tool in the potentiometric titration procedure. An artificial neural network (ANN) was used as a multivariate calibration tool in the potentiometric titration to model the complex non-linear relationship between ibuprofen, indomethacin and naproxen concentrations and the millivolt (mV) of the sol

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40

Trajkovska Bojadjiska, Elena, Hrisanta Godzo, Jelena Acevska, Natalija Nakov, Aneta Dimitrovska, and Katerina Brezovska. "Evaluation of measurement uncertainty after optimization of the method for potentiometric titration of glycine." Macedonian Pharmaceutical Bulletin 68, no. 1 (2023): 43–52. http://dx.doi.org/10.33320/maced.pharm.bull.2022.68.01.005.

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Accuracy and repeatability of the results obtained by potentiometric determination mostly depend on the stoichiometric ratio between the quantity of titrant used and the quantity of sample to be examined. During the optimization of the method, care should be taken to adjust the sample amount to provide suitable volume of titrant, in order to avoid the titration error with consumption above 90% of the total burette volume. In this study suitable approach for optimization of method for potentiometric titration of glycine with 0.1 M perchloric acid was demonstrated, followed by evaluation of meas

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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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Sakač, Nikola, Dubravka Madunić-Čačić, Dean Marković, et al. "Potentiometric Surfactant Sensor Based on 1,3-Dihexadecyl-1H-benzo[d]imidazol-3-ium for Anionic Surfactants in Detergents and Household Care Products." Molecules 26, no. 12 (2021): 3627. http://dx.doi.org/10.3390/molecules26123627.

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A 1,3-dihexadecyl-1H-benzo[d]imidazol-3-ium-tetraphenylborate (DHBI-TPB) ion-pair implemented in DHBI-TPB surfactant sensor was used for the potentiometric quantification of anionic surfactants in detergents and commercial household care products. The DHBI-TPB ion-pair was characterized by FTIR spectroscopy and computational analysis which revealed a crucial contribution of the C–H∙∙∙π contacts for the optimal complex formation. The DHBI-TPB sensor potentiometric response showed excellent analytical properties and Nernstian slope for SDS (60.1 mV/decade) with LOD 3.2 × 10−7 M; and DBS (58.4 mV

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Rajkovic, Milos, Ivana Novakovic, and Aleksandar Petrovic. "Determination of titratable acidity in white wine." Journal of Agricultural Sciences, Belgrade 52, no. 2 (2007): 169–84. http://dx.doi.org/10.2298/jas0702169r.

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The amount of titration acid in must is in the largest number of cases with in the range 5.0-8.0 g/dm3. Wines, as a rule, contain less acids than must, and according to Regulations, titratable acidity is in the range of 4.0-8.0 g/dm3 expressed in tartaric acid, because a part of tartaric acid is deposited in the form of salts (tartar or argol) during alcohol fermentation. For wines that contain less than 4 g/dm3 of titratable acids there arises a suspicion about their origin, that is, that during the preparation some illegal acts were done. Because of that, the aim of this paper is to determin

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Vasilyeva, Marina S., Vladimir S. Rudnev, E. S. Zykova, et al. "Ti/TiO₂, Au Electrodes Prepared by Plasma Electrolytic Oxidation and Electron Beam Evaporation." Defect and Diffusion Forum 386 (September 2018): 326–31. http://dx.doi.org/10.4028/www.scientific.net/ddf.386.326.

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Ti/TiO2,Au electrodes were prepared via plasma electrolytic oxidation (PEO) of Ti plate, followed by deposition of a thin (10 nm) Au layer by electron beam evaporation (EBE). The electrodes obtained were used for potentiometric indication of different types of chemical reactions. Ti/TiO2,Au electrodes showed an excellent performance for end point indication in the oxidation-reduction and complexometric titrations similar to the traditional Pt and in the acid-base titration similar to glass electrode.

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Abu Ghalwa, Nasser. "Development of a Novel Solid-State Sensor Electrode Based on Titanium Thin Film as an Indicator Electrode in Potentiometric and Conductometric Acid-Base Titration in Aqueous Solution." Journal of Sensors 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/681826.

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A modified Ti/(SnO2+ Sb2O3) electrode was prepared by thermal deposition on titanium substrate and its use as indicator electrode to potentiometric and conductometric acid-base titration in aqueous solution at 298 K was developed. The E-pH curve is linear with slope of 0.0512 V/dec at 298 K. The standard potential of this electrode,E0, was determined with respect to the SCE as reference electrode. The recovery percentages for potentiometric and conductometric acid-base titration for acetic acid against NaOH were calculated. The cell constant, specific conductance, and the molar conductance wit

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H�zi, J., L. Daruh�zi, O. Pint�r, and Zs Szak�ly. "Critical comparison of evaluation methods of potentiometric titration data using a microcomputer-controlled automatic potentiometric titration system." Mikrochimica Acta 89, no. 1-6 (1986): 379–88. http://dx.doi.org/10.1007/bf01207330.

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Deng, Chan Gai, Li Fu Liao, and Wei Long. "Simultaneous Determination of Copper, Lead and Zinc in Alloy by Potentiometric Titration Coupled with Multivariate Calibration Using a Flow Injection Technique." Advanced Materials Research 785-786 (September 2013): 1353–58. http://dx.doi.org/10.4028/www.scientific.net/amr.785-786.1353.

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A new potentiometric titration method coupled with multivariate calibration using a flow injection technique for the simultaneous determination of multi-components in alloy has been developed. the titrant is a mixture of EDTA and sodium fluoride, both mercury film electrode and fluorinion selective electrode are inserted in the flow cell. In a process of titration, both the potentiometric of mercury ion and the mixed proportion of reactants at each titration point can be obtained simultaneously from the two electrodes, and then the concentration of each component in the mixture can be obtained

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Prasad, Saradh, Valderi Duarte Leite, Renato Alexandre Costa Santana, and Emanuelle Araújo De Medeiros. "Electrometric studies on formation of cerium vanadates as a function of pH." Ecletica Quimica 31, no. 2 (2006): 31–38. http://dx.doi.org/10.26850/1678-4618eqj.v31.2.2006.p31-38.

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The precise nature of the reaction between nitric acid and sodium ortho-vanadate solutionshas been studied by means of electrometric techniques involving potentiometric and conductometrictitrations. The well defined inflections and breaks in the titration curves confirm the existence of theanions, pyro-V 2 O 74- , meta-VO 3- and poly-H 2 V 10 O 284- corresponding to the ratios of VO 43- :H + as 1:1,1:2 and 1:2.6 in the neighborhood of pH 10.5, 7.4 and 3.6, respectively. The interaction of cerium(III)nitrate with sodium vanadate solutions, at specific pH levels 12.4, 10.5, 7.4 and 3.6 was also

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Grabowski, Lauren E., and Scott R. Goode. "Determining a Solubility Product Constant by Potentiometric Titration To Increase Students’ Conceptual Understanding of Potentiometry and Titrations." Journal of Chemical Education 94, no. 5 (2017): 636–39. http://dx.doi.org/10.1021/acs.jchemed.6b00460.

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Tran The, Nga, and Anh Nguyen Thi Mai. "DETERMINING THE THERMODYNAMIC DISSOCIATION CONSTANTS OF 5-BROMO-6,7-DIHYDROXY-N-METHYL-3-SULFOQUINOLINE IN AQUEOUS SOLUTION AT 25 OC BY POTENTIOMETRIC METHOD." Journal of Science Natural Science 67, no. 2 (2022): 103–9. http://dx.doi.org/10.18173/2354-1059.2022-0027.

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In this report, the thermodynamic dissociation constants of 5-bromo-6,7- dihydroxy-N-methyl-3-sulfoquinoline (signed H2BDMS) acid were firstly determined in the aqueous solution using potentiometric titration at (25.0 ± 0.1) oC in the ionic medium of 0.10 M KCl solution. This new acid is a compound containing the quinoline ring that may be applied in many branches of chemistry, biology, and medicine. The pKa values of H2BDMS acid which were determined by the potentiometric method are pKa1 = 2.79 ± 0.02 and pKa2 = 7.80 ± 0.06. To increase the precision and accuracy of the results, the pKa value

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