Showing papers on "Potassium iodate published in 2005"
TL;DR: In this paper, the co-inhibition characteristics of sodium tungstate was evaluated along with potassium iodate, and detailed studies were carried out to investigate the effect of oxygen in the inhibition process, the nature and strength of the passive film and the mechanism of its formation are explained based on detailed studies conducted under different static and dynamic conditions.
85 citations
TL;DR: The method was based on the reaction of carboxylic acid group of the drug with a mixture of potassium iodate and potassium iodide in aqueous medium at room temperature and successfully applied to the determination of ramipril in tablets and capsules.
Abstract: The objective of this research was to develop a kinetic spectrophotometric method for determination of ramipril in pure form and pharmaceutical formulations. The method was based on the reaction of carboxylic acid group of the drug with a mixture of potassium iodate (KIO3) and potassium iodide (KI) in aqueous medium at room temperature. The reaction is followed spectrophotometrically by measuring the increase in absorbance at 352 nm as a function of time. The initial-rate and fixed-time methods were adopted for constructing the calibration curves. Both the calibration curves were linear in the concentration range of 10.0–70.0 μg mL−1. The detection limits were 0.02μg mL−1 and 0.15-μg mL−1 for initial rate and fixed time methods, respectively. The proposed methods are validated statistically and through recovery studies. The point and interval hypothesis tests have been performed confirming that there is no significant difference between the proposed methods and the reference method. The experimental true bias of all samples is less than ±2%. The methods have been successfully applied to the determination of ramipril in tablets and capsules.
49 citations
TL;DR: In this article, single crystals of the potassium uranyl iodate, K[UO2(IO3)3] (1), have been grown under mild hydrothermal conditions.
39 citations
TL;DR: The analytical importance of the material has been established by quantitative separation of Pb2+ from other metal ions and the effect on the exchange capacity of drying the exchanger at different temperatures has also been studied.
Abstract: Zirconium(IV) selenoiodates have been synthesized under a variety of conditions. The most chemically and thermally stable sample is prepared by adding a mixture of aqueous solutions of 0.1 mol L−1 potassium iodate and 0.1 mol L−1 sodium selenite to aqueous solution of 0.1 mol L−1 zirconium(IV) oxychloride. Its ion-exchange capacity for K+ and Pb2+ was found to be 3.20 and 2.35 meq g−1 dry exchanger, respectively. The material has been characterized on the basis of chemical composition, pH titration, and thermogravimetric analysis. The effect on the exchange capacity of drying the exchanger at different temperatures has also been studied. The analytical importance of the material has been established by quantitative separation of Pb2+ from other metal ions.
23 citations
TL;DR: In this article, a simple and selective spectrophotometric method has been developed for the determination of trace amounts of arsenic using azure B as a chromogenic reagent, which is based on the reaction of arsenic(III) with potassium iodate in acid medium to liberate iodine.
Abstract: A simple and selective spectrophotometric method has been developed for the determination of trace amounts of arsenic using azure B as a chromogenic reagent. The proposed method is based on the reaction of arsenic(III) with potassium iodate in acid medium to liberate iodine. The liberated iodine bleaches the violet color of azure B and is measured at 644 nm. This decrease in absorbance is directly proportional to the As(III) concentration, and Beer's law is obeyed in the range 0.2–10 µg ml−1 of As(III). The molar absorptivity, Sandell's sensitivity, detection limit, and quantitation limit of the method were found to be 1.12×104 l mol−1cm−1, 6.71×10−3 µg cm−2, 0.02 µg ml−1 and 0.08 µg ml−1, respectively. The optimum reaction conditions and other analytical parameters were evaluated. The proposed method has been successfully applied for the determination of arsenic in various environmental and biological samples.
21 citations
TL;DR: A new method for disinfection of microorganisms by electrochemically regenerated periodate was developed and inactivation of Escherichia coli was observed in 30 min.
Abstract: A new method for disinfection of microorganisms by electrochemically regenerated periodate was developed. Oxidation of iodate to periodate was observed at 1.25 V versus a silver/silver chloride electrode in a cyclic voltammogram of potassium iodate. When 1.25 V was applied in 1.0 mM potassium iodate, approximately 4-log inactivation of Escherichia coli was observed in 30 min.
15 citations
TL;DR: In this article, slurries containing molybdenum oxide abrasives (MoO2, isoelectric point ∼pH 2) with KIO3 as the oxidizing agent were used to polish copper disks and films, yielding relatively high removal rates.
Abstract: Slurries containing molybdenum oxide abrasives (MoO2, isoelectric point ∼pH 2) with potassium iodate (KIO3) as the oxidizing agent were used to polish copper disks and films, yielding relatively high removal rates. The relatively high copper removal rates observed were due to the in situ generation of I2 by the reaction between KIO3 and MoO2. The surface quality of the polished Cu films, however, was very poor with surface roughness values as high as 140 nm. A second polishing step using a dilute colloidal silica suspension containing H2O2, benzotriazole, and glycine at pH 4 improved the post-polish surface quality, final surface having surface roughness values as low as 0.35 nm.
10 citations
Patent•
28 Dec 2005
TL;DR: In this paper, the production of potassium iodate from chlorine oxidation is carried out by oxidizing potassium iodide to generate Potassium iodate in weak base medium, controlling pH of reacting system between 7-10 and temperature 60-100iOC, and separating the product from concentrated chlorhydric acid.
Abstract: Production of potassium iodate from chlorine oxidation is carried out by oxidizing potassium iodide to generate potassium iodate in weak base medium, controlling pH of reacting system between 7-10 and temperature 60-100iOC, and separating the product from concentrated chlorhydric acid It achieves simple operation, high purity and safety
5 citations