A new method has now been developed for the estimation of oxalic acid. The method consists in exposing a measured volume of the oxalic acid solution with a known excess of ceric sulphate solution to sunlight or to the light from a 1000 watt tungsten filament lamp for a short time (for 5...
The oxalic acid TOT extractable ammoniumnitrogen (NH4+N) was significantly related to anaerobic incubation. More N was extracted with the TOT methods than SUP methods, probably due to alkaline hydrolysis during distillation of TOT methods. Oxidation with KMnO4 released the most N, while HCl and ...
(1) Clean-up methods (i) Oxalic acid method-Ascorbic acid is present in fruits, fruit juices and vegetables, and is readily extracted by homogenization of the tissues in aqueous oxalic acid, followed by filtration 1 •2 . (ii) Phosphoric acid method-The tissue is ground with a mixture ...
Ultra-structural mapping of sugarcane bagasse after oxalic acid fiber expansion (OAFEX) and ethanol production by Candida shehatae and Saccharomyces cerevi... Background Diminishing supplies of fossil fuels and oil spills are rousing to explore the alternative sources of energy that can be produced fr...
The volume of Fe +2 solution run in the second stage gives a measure of the dichromate present in the original mixture. 2. The reverse titration does not give accurate results, because it is affected by the induced reaction between oxalic acid and dichromate which is induced by the reaction...
Changes in density of aqueous solutions with changes in concentration at 20°C. Density of acetic acid, citric acid, formic acid, D-lactic acid, oxalic acid and trichloroacetic acid in water is plotted as function of wt%, mol/kg water and mol/l solution. Density of Aqueous Solutions...
Cox JD, Pilcher G (1970) Thermochemistry of organic and organometallic compounds. Academic Press, New York Google Scholar Feller D, Bross DH, Ruscic B (2019) Enthalpy of formation of C2H2O4 (oxalic acid) from high-level calculations and the active thermochemical tables approach. J Phys Chem...
An electron-capture gas chromatographic procedure for the estimation of oxalic acid in urine. Anal Biochem 1979;94:470-6.Tocco DJ, Duncan AEW, Noll RM, Duggan DE (1979) An electron-capture gas chromatographic procedure for the estimation of oxalic acid in urine. Anal Biochem 94: 470–476 ...
intraperitonealoxytetracyclinesalmonidA simple and rapid method for the detection and extraction of oxolinic acid, flumequine, florfenicol and oxytetracycline from marine sediments was developed and validated. The analytes were extracted from the marine sediment using a solution of oxalic acid diluted in ...
Trace levelsmercuryOxalic Acidstannous chlorideTrace levels of mercury in soil, environmental water (portable and polluted) and plant specimens (cucumber and pepper) at Koya area-Kurdistan region-Iraq was described by simple procedure, where, no further solvent purification or pre-concentration required...