Showing papers on "Potassium iodate published in 1985"
TL;DR: In this article, concentrated hydrochloric acid is added to samples of natural waters containing 2 × 10−7−5 × 10 −5M iodine and the solutions are then oxidised with hydrogen peroxide on a boiling water-bath.
Abstract: Concentrated hydrochloric acid is added to samples of natural waters containing 2 × 10–7–5 × 10–5M iodine and the solutions are then oxidised with hydrogen peroxide on a boiling water-bath. They are then reduced with sodium sulphite, which is subsequently removed by bubbling a stream of inert gas through the solution. All of the inorganic iodine, now present in the solution in the –1 oxidation state, can be titrated spectrophotometrically with standard potassium iodate solution, following a method previously described in which interferences from oxidants and reductants are eliminated.
9 citations
9 citations
TL;DR: In this article, specific heat, thermal decompositions and thermal properties of the phase transitions in KClO3 KBrO3 and KIO3 crystals were measured over the temperature range 250-600 K.
6 citations
TL;DR: In this article, it was shown that the best crystals grow from the least associated solutions, i.e., from solutions which have the largest value of osmotic pressure, density and surface tension, and correlated with the crystal growth and nucleation processes.
5 citations
TL;DR: In this paper, the simultaneous determination of milligram amounts of copper, silver and gold in mixtures is described, where ascorbic acid is added in excess and back-titrated biamperometrically with standard potassium iodate solution.
2 citations
Patent•
01 May 1985
TL;DR: In this paper, a chromium electroplating bath containing 450 g/l chromic acid CrO3 and 4.5 g/L sulphuric acid H2 SO4 is added to a conventional chromium electrophoresis bath.
Abstract: To a conventional chromium electroplating bath containing 450 g/l chromic acid CrO3 and 4.5 g/l sulphuric acid H2 SO4 are added 10 g/l of potassium perchlorate or potassium bromate or potassium iodate or mixtures thereof. Higher current densities may be used in electrodepositing chromium without impairing the quality.
2 citations
TL;DR: A rapid air titration method for determining SO2 concentration in inhalation chambers has been validated using the pararosaniline-formaldehyde (PRA) method of West and Gaeke.
Abstract: A rapid air titration method for determining SO2 concentration in inhalation chambers has been validated using the pararosaniline-formaldehyde (PRA) method of West and Gaeke. This air-titration (iodate) method is an adaptation of iodometric methods using a starch indicator. Potassium iodate and an excess of potassium iodide are used in the reaction. Sampling is completed in ten minutes or less and concentration is calculated by use of a simple formula. Linear equations were derived over the range of concentrations from 0.5 to 100 ppm SO2 for uncorrected iodate bubbler results, data corrected for tandem bubbler concentrations and data corrected for mean iodate bubbler efficiency. Linear correlation with the PRA method over this range was 0.999 for all three sets of data.
2 citations
Patent•
13 Jun 1985
TL;DR: In this paper, the authors proposed to obtain an iodine-enriched food useful for modified milk for infants, etc. without using additives other than foods, by feeding an iodinecontaining material, e.g. KI, to a dairy cow, milking a milk with a high iodine content, pretreating the milk, drying the pretreated milk and using the resultant powdered milk as a raw material.
Abstract: PURPOSE: To obtain an iodine-enriched food useful for modified milk for infants, etc. without using additives other than foods, by feeding an iodine-containing material, e.g. KI, to a dairy cow, milking a milk with a high iodine content, pretreating the milk, drying the pretreated milk and using the resultant powdered milk as a raw material. CONSTITUTION: An iodine-containing material consisting of potassium iodide, calcium iodate, potassium iodate, seaweed and a mixture thereof, etc., is added and mixed with feed for dairy cow and the resultant feed is given thereto. Milking is then carried out to give a milk containing at least 300μg, based on one l milk, iodine, which is then pretreated, e.g. defatted, and dried by the spray-drying method, etc., to afford a powdered milk. The powdered milk is used as a raw material to produce a modified milk for infants, etc., and give the aimed iodine-enriched food. COPYRIGHT: (C)1986,JPO&Japio
1 citations
TL;DR: In this article, the selectivity of the membrane electrode for a given type of ions at variable concentrations of other components, with particular attention to the influence of the initial concentrations of the various acids on the shift of the iodide selective electrode potential, taking into account the redox reactions between these components in an oscillatory system.
Abstract: In the potassium iodate-hydrogen peroxide-cysteine-sulfuric acid system, the authors studied the selectivity of the membrane electrode for a given type of ions at variable concentrations of other components, with particular attention to the influence of the initial concentrations of the various acids on the shift of the iodide selective electrode potential, taking into account the redox reactions between these components in an oscillatory system.