Showing papers on "Potassium iodate published in 1988"

Kinetic aspects of the Bray–Liebhafsky oscillatory reaction

Abstract: The decomposition of hydrogen peroxide in the presence of potassium iodate and sulphuric acid (the Bray–Liebhafsky oscillatory reaction) at constant temperature is elucidated. The forms of the time evolution of this process and some kinetic parameters are presented as a function of the concentrations of the reactants.

Towards the eradication of iodine-deficiency disorders in Brazil through a salt iodination programme.

Abstract: Iodine-deficiency disorders have been a serious public health problem in Brazil because of the failure of a salt iodination programme established in 1953. The reasons for this failure were logistical, e.g., potassium iodide was not supplied to all salt-producers, iodination of salt was largely erratic, and part of the population at risk used only non-refined salt, which was not iodinated. In 1978 a task force was therefore formed to implement measures to eliminate iodine-deficiency disorders from the country. For this purpose, potassium iodate was distributed, free-of-charge, to all salt mills and an iodate dosing spray was supplied without cost to small salt producers. Also, regional laboratories for determining iodine in salt were set up, inspectors made regular visits to the salt mills, and samples of salt from commerce and from the producers were analysed. More than 90% of the samples contained 10-30 mg iodine per kg. In three typical areas of the country with endemic goitre the urinary excretion of iodine increased from an average of less than 40 μg iodine to 125 ± 38 μg iodine per g creatinine. In conclusion, the salt iodination programme was a complete success and could serve as a model for other countries with a high prevalence of iodine-deficiency disorders.

Modification of globin protein

Abstract: PURPOSE:To increase solubility in water at a low cost, by forming globin, separated and collected from animal blood into an alkaline aqueous solution of specific pH and subjecting the aqueous solution to decoloring treatment with an oxidizing agent. CONSTITUTION:Globin, separated and collected from animal blood is used to prepare an aqueous solution at >=10.5, preferably >=11.5pH. After sufficiently dissolving the globin, an aqueous solution of an oxidizing agent, e.g. sodium chlorite, sodium hypochlorite, potassium iodate, etc., is added and a reducing agent is preferably further added to carry out decoloring treatment and increase solubility in water at the same time.

Breeding of domestic fowl for edible meat

Abstract: PURPOSE:To breed domestic fowls having low body fats and increased muscular texture, by feeding protein containing a specific iodine compound or iodine bonded protein to domestic flows for edible meat in specified period. CONSTITUTION:A feed comprising protein containing an iodide and an iodate or iodine banded protein is fed to domestic fowls of age in 10-60 days. The protein containing the iodide and the iodate or the iodine bond protein is added to the feed to make 1-3,500 ppm iodine concentration. The iodine bonded protein is obtained by adding iodine or an iodine compound to an aqueous solution of protein and reacting. The protein containing the iodide and the iodate is obtained by blending vegetable protein such as soybean, corn, etc., or animal protein such as fishmeal, serum, glair, milk, etc, preferably milk casein with an iodide such as potassium iodide, etc., and an iodate such as potassium iodate in a ratio of the iodide and the iodate of 1:1-10.

KlO3を含むHNO3溶液からのPu (IV) のSiO2あるいはAl2O3への吸着

Abstract: KIO3を含むHNo3溶液からのSio2あるいはAl203へのPu (IV) の吸着挙動を検討した。分配比, D (ml/g) はKIO3濃度とともに増大し, HNO3濃度とともに減少する。KIO3濃度によるDの変化に基づいて, Pu (IV) とI03-との錯体の安定度定数を計算し, その結果から最も妥当なPu (IV) の吸着機序はSiO2あるいはAl2O【d3】へのPu (IO3) 4の見かけ上の追沈殿ではなく, 正に帯電したSiO2あるいはAl2O3とPu (IO3) 62-陰イオンの相互作用によって起こると結論した。