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.

Biofortification of Sweetcorn with Iodine: Interaction of Organic and Inorganic Forms of Iodine Combined with Vanadium

Abstract: Around the world, maize cultivation is an essential part of food systems for humans and animals. Effective reactions against the occurrence of diseases related to the deficiency of elements in the human diet are related to the biofortification of plant species of broad importance, including maize. The enrichment of maize with iodine is difficult due to the poor transport of this element to the plant’s generative organs. In marine algae, vanadium is part of the structure of the enzyme iodine-dependent peroxidase (vHIPO) that catalyzes the uptake of cellular iodine (I) and its volatilization as I2. The relationship between iodine and vanadium in higher plants, however, is not well-known. The aim of this research was to determine the effect of vanadium fertilization and the interactions of organic and inorganic iodine compounds with vanadium under soil application. In the pot experiment, NH4VO3 was applied to the soil in two doses of 0.1 and 1 μmol·dm−3 both separately and in combination, with the following iodine compounds: 5-iodosalicylic acid (5-ISA), 2-iodobenzoic acid (2-IBeA), potassium iodide (KI), and potassium iodate (KIO3). The iodine compounds were also applied independently to vanadium, while in the control combination, fertilization was performed without I and V. Iodine compounds were applied with doses calculated using the molar mass of this element (i.e., 10 μmol·dm−3 I). The highest level of iodine accumulation in grains (regardless of fertilization with V) was obtained after the application of organic compounds 5ISA and 2IBeA. A lower dose of vanadium (0.1 μmol·dm−3) in combination with KI and KIO3 increased the accumulation of iodine in leaves, roots, and grains compared to the combination without the additional application of vanadium. The combined application of vanadium in both doses with 2-IBeA most effectively stimulated the transport and accumulation of iodine to the maize grain. Under the combined application of 5-ISA and vanadium (10 μmol·dm−3), we observed the stimulating effect of this organic iodine compound on the accumulation of vanadium in the roots as well as the antagonistic effect of vanadium in combination with 5-ISA on the accumulation of iodine in the roots, leaves, and maize grain. Vanadium accumulated mainly in the roots, where the content of this element increased proportionally to its dose. The soil application of 5-ISA increased the total sugar content and vitamin C content in the grain.

The Kinetic Current Phenomenon in the Polarographic Reduction of Bromate

Abstract: Although bromate and iodate have been known to be electroreducible at the dropping mercury electrode, their reaction processes involve some uncertainties. Two kinds of the reduction waves, acidic and alkaline waves, were first discovered by Rylichl' in the polarography of potassium iodate and bromate in unbufered solutions which contain various rations as supporting electrolyte. Orlemann and Kolthoff performed a systematic study in which influences of various rations onthe irreversible reductions of iodate and bromate anions were both experimentally and theoretically investigated. More recently Cermak pointed out in his short publication that each of these polarographic waves consists of two separate parts in a certain pH range, and assumed the kinetic current phenomena rising between the free acid molecules and their dissociated anions. There have been known few examples for the kinetic current of inorganic acids, but those kinetic mechanisms are expected to be more comprehensible and more convenient to the theoretical treatment, compared with the complexities assumed in the cases of organic depolarizers.The purpose of the present work is to study the reduction of bromate in detail with respect to its kinetic current phenomenon. On the reduction of iodate, it was hardly possible to make the reliable measurements on the first and the second waves separately, because the potential difference of the two waves was always small. The more detailed observation with iodate, therefore, was not made in spite of the expectation of its similar behaviour to bromate.

Preparation of potassium iodate

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

Thermal diffusion of weak electrolytes: aqueous phosphoric and iodic acids

Abstract: Soret coefficients of aqueous phosphoric acid and aqueous iodic acid are determined conductimetrically at 25 °C. As the molality of phosphoric acid drops from 0.05 toward 0.00 mol kg−1, the enthalpy of transport jumps from 2 to 15 kJ mol−1. For iodic acid, a stronger electrolyte, the corresponding increase is smaller, from 12 to 17 kJ mol−1. Equations are developed for the enthalpy of transport of 1:1 weak electrolytes. The equations are used to evaluate the reactive enthalpy of transport and the intrinsic enthalpies of transport of the ionized and molecular forms of phosphoric and iodic acids. Equating the enthalpies of transport of the acid molecules and the acid anions provides estimates of single-ion enthalpies of transport. Thermal diffusion measurements are reported for potassium dihydrogen phosphate and potassium iodate to help interpret the results. Keywords: thermal diffusion, enthalpy of transport, Soret coefficients, weak electrolytes, phosphoric acid, iodic acid.

Health and nutritious iodine and Calcium containing noodles

Abstract: The health-care noodles contain kelp, seaweed, laver, soybean powder and milk, and its flavouring includes potassium iodate and edible calcium powder. It serves to supplement iodine and calcium.