Topic
Potassium iodate
About: Potassium iodate is a research topic. Over the lifetime, 611 publications have been published within this topic receiving 5940 citations. The topic is also known as: KIO3.
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9 citations
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
Patent•
01 Nov 2000
TL;DR: In this paper, a multi-element low-sodium nutritive salt with health-care function is prepared from vacuum crystallized and refined salt through crushing, sieving by 1.25 mm mesh, proportionally mixing with heptahydrated magnesium sulfate and potassium chloride, which have been pulverized and sieved by 1 mm mesh.
Abstract: A multi-element low-sodium nutritive salt with health-care function is prepared from vacuum crystallized and refined salt through crushing, sieving by 1.25 mm mesh, proportionally mixing with heptahydrated magnesium sulfate and potassium chloride, which have been pulverized and sieved by 1 mm mesh, mixing again while spraying the mother liquid of potassium iodate and sodium selenite on going through automatic distributor, baking at 80 deg.C in suspension state by hot air, sieving by 1 mm mesh, and mixing with activated calcium and zinc lactate in a helical cone type mixer. Its advantages are I, Ca, Zn and Se enriched nutrition, low content of sodium chloride and health-care function.
9 citations
TL;DR: A certified reference material of chlorate ions with the linkage to the International System of Units (SI) was first established by evaluating the storage stability of the solution and estimating measurement uncertainties as mentioned in this paper.
9 citations
TL;DR: In this paper, a simple, sensitive, precise and free of organic solvents method for the determination of sildenafil and vardenafil in bulk and pharmaceutical formulation was developed and validated.
Abstract: Objective : To develop and validate simple, sensitive, precise and free of organic solvents method for the determination of sildenafil (SIL) and vardenafil (VAR) in bulk and pharmaceutical formulation. Methods : The method is based on the reaction of studied drugs with a mixture of potassium iodide and potassium iodate in an aqueous medium at (25±2 °C) to form yellow coloured triiodide ions (I 3 - ) within 45 min. The reaction is followed spectrophotometrically by measuring the absorbance at 288, 351 nm and 285, 351 nm for sildenafil and vardenafil respectively. Results : The effects of analytical parameters on the reported systems were investigated. Beer's law of SIL was obeyed in the range of (0.4-12) μg ml -1 and (0.6-16) μg ml -1 . Molar absorptivity was found to be (67.659 ×10 3 ) lmol/cmand (37.955×10 3 ) lmol/cm at 288 nm, 351 nm respectively. Beer's law of VAR was obeyed in the range of (0.2-13) μg/mland (0.5-40) μg/ml. Moreover, molar absorptivity’s were found to be (68.719 ×10 3 ) l mol -1 cm -1 and (26.691×10 3 ) l mol -1 cm -1 at 285 nm, 351 nm respectively. Conclusion : The proposed method has been applied to determine the components in dosage forms with an average recovery of 98.15% to 103.45% and the results have been found in good agreement with those results obtained by the reference methods .
9 citations