نتایج جستجو برای: sodium bromate
تعداد نتایج: 188121 فیلتر نتایج به سال:
in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...
Abstract: Spectrophotometric studies were successfully used in quantitative analysis of Amitriptyline Hydrochloride (ATH) Two new methods using spectrophotometry are described for the determination of (ATH) with potassium bromate as the oxidizing agent and acid dyes, Methyl orange and Indigo carmine. Both spectrophotometric methods are based o...
A case of potassium bromate intoxication showing a severe hearing loss and anuria was reported. This 19 years old female patient had no vertigo nor vestibular disorders, but a strong cochlear damage was suspected by electerochleography. In order to investigate the effects of potassium bromate on the inner ear, the authors performed experiments by using guinea pigs. At first, various concentrati...
Three indirect methods for the assay of flunarizine dihydrochloride (FNH) in bulk drug and commercial formulation based on titrimetric and spectrophotometric techniques using bromate-bromide mixture are described. In titrimetry, a measured excess of bromate-bromide mixture is added to an acidified solution of FNH and the unreacted bromine is determined iodometrically (method A). Spectrophotomet...
Ozonation followed by biological activated carbon (O3/BAC) is being considered as a key component of reverse osmosis-free advanced treatment trains for potable wastewater reuse. Using a laboratory-scale O3/BAC system treating two nitrified wastewater effluents, this study characterized the effect of different ozone dosages (0-1.0 mg O3/mg dissolved organic carbon) and BAC empty bed contact time...
As catalytic hydrogenation is validated as one of the most useful approach to reduce a potential carcinogenic bromate in water, usage continuous purge H2 gas and precious metal catalysts are typically required, making it less feasible for practical implementation. Since sodium borohydride (NaBH4) represents alternative source releasing non-precious (cobalt (Co)) usually required accelerate hydr...
— We present a systematic study of spiral waves in the Belousov-Zhabotinsky reaction in a spatial open reactor, where the concentrations of sulfuric acid, sodium bromate, and malonic acid are varied. Within this parameter space, three kinds of instabilities arise: two of them, which we identify as the retracting wavefront and convective instabilities, lead to the destruction of the spiral patte...
INTRODUCTION All drinking water municipalities share the same goal of providing their communities with a reliable source of safe drinking water. To achieve this goal, most water systems must treat their water. The type of treatment used varies depending on the size, source, and water quality. Disinfection protects public water systems (PWSs) from potentially dangerous microbes. The most common ...
BACKGROUND Nigella sativa is an important component of several traditional herbal preparations in various countries. It finds its applications in improving overall health and boosting immunity. The current study evaluated the role of fixed and essential oil of Nigella sativa against potassium bromate induced oxidative stress with special reference to modulation of glutathione redox enzymes and ...
BACKGROUND While it is well known that hypotonic solutions of sodium chloride induce hemolysis, the effects of other salt solutions on human erythrocytes have not been well documented. OBJECTIVE The study is to compare the effects of other salt solutions on human red cells. METHODS Iso-osmotic and hypo-osmotic solutions of various salts were prepared after taking into account their molecula...
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