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Fundamental Aspects
Published in Bruno Langlais, David A. Reckhow, Deborah R. Brink, Ozone in Water Treatment, 2019
Guy Bablon, William D. Bellamy, Marie-Marguerite Bourbigot, F. Bernard Daniel, Marcel Doré, Françoise Erb, Gilbert Gordon, Bruno Langlais, Alain Laplanche, Bernard Legube, Guy Martin, Willy J. Masschelein, Gilbert Pacey, David A. Reckhow, Ciaire Ventresque
Iodometric methods. Iodometric procedures have been used for all of the ozone concentration ranges encountered in water treatment plants. This includes measurement of ozone directly from the generator and measurement of ozone as stripped from aqueous solution. For the iodometric method, the ozone-containing gas is passed into an aqueous solution containing excess potassium iodide, in which the ozone oxidizes iodide ion (Maier and Kurzmann 1977). The difficulties regarding the ozone dosage based on iodometry have been partially described earlier in this chapter. Additional concerns are described below.
Titrimetric Analysis
Published in Pradyot Patnaik, Handbook of Environmental Analysis, 2017
Iodometric titration involves the reaction of iodine with a known amount of reducing agent, usually sodium thiosulfate (Na2S2O3) or PAO. Starch solution is used as an indicator to detect the end point of the titration. Thus, the exact amount of iodine that would react with a measured volume of sodium thiosulfate of known strength is determined. From this, the concentration of the analyte in the sample, which is proportional to the amount of iodine reacted with thiosulfate or PAO, is then calculated.
Structural and electrical investigations of novel CdFeO/(Bi,Pb)-2212 superconductor composite
Published in Phase Transitions, 2022
S. Abbas, H. Basma, R. Awad, M.S. Hassan
The Iodometric titration was employed for the determination of the oxygen content. The method consists of a two-step redox titration reaction [37,38]. In the first step, the superconductor sample is dissolved in Potassium Iodide (KI) acidic solution to achieve the reduction of copper to copper Iodide (CuI). In a second step, a back titration of the CuI was performed by using sodium thiosulphate (Na2S2O3) to determine the oxygen content [39]. The end point of titration was detected by using Potassium thiocyanate (KCSN) used as an indicator of iodometry.
Aqueous sulfide oxidation catalyzed by hydrocarbon solution of 3,3′,5,5′-tetra-tert-butyl-stilbenequinone: a kinetics and mechanistic approach
Published in Journal of Sulfur Chemistry, 2021
H. Y. Hoang, R. M. Akhmadullin, E. A. Karalin, A. G. Akhmadullina, F. Ui. Akhmadullina, R. K. Zakirov, T. L. Ton, M. U. Dao
The quantitative composition of reaction mixture and products was identified by potentiometric titration, spectrophotometry and iodometry methods. The oxygen consumption before and after the oxidation reaction was determined using a GSB-400 drum-type gas meter. Infrared spectra (IR) of substances were recorded using the KBr pellet technique on a Perkin Elmer (Spectrum 100) FTIR Spectrometer from 1400 to 400 cm−1. Melting points were determined on a Buchi M-560 melting point apparatus.