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26 paź 2018 · Ferrous (\(\hbox {Fe}^{2+}\)) and ferric (\(\hbox {Fe}^{3+}\)) iron content in mineral samples was determined from total iron (as obtained, for instance, from X-ray fluorescence analysis) and mass increase upon switching the purge gas from inert to oxidizing, at high temperature, in a thermogravimetric analysis.
16 lis 2018 · The spectrophotometric methods have been commonly used for the analysis of iron content such as 2,2′-bipyridyl and 2,2′,2″-terpyridyl 4,7-diphenyl-1 method (Moss and Mellon 1942), 4,7-diphenyl-1,10-phenanthroline method (Clark 1962), ferrozine method (Herrera et al. 1989) and 1,10-phenanthroline method (Tamura et al. 1974).
7 maj 2024 · Reduction of Fe (III) to Fe (II) is one of the most important steps in the titration process to determine the total iron content in a mineral sample. This step of titration is often conducted in different ways.
Three methods of colorimetric iron analysis are used in Hach procedures. The 1,10-Phenanthroline Method is the best-known test for iron. The Fe 2+ procedure uses Ferrous Iron Reagent Powder containing 1,10-Phenanthroline as an indicator. Total iron determination or analysis uses FerroVer Iron Reagent. FerroVer Iron Reagent contains 1,10 ...
1 sie 2022 · To determine the total iron concentration in aqueous solutions containing complexing matrix, a direct and rapid ultraviolet–visible spectroscopy determination method was developed using the Nitroso R salt as a chromogenic reagent.
28 lut 2012 · The measurement of low levels of ferrous and total reactive iron (TRFe) using three common colorimetric methods (bathophenanthroline (BPA), triazine (TPTZ), and ferrozine) in freshwater was evaluated.
1 sie 2022 · The proposed method provides great promise for application in-field analysis of iron content in various environmental samples and hydrometallurgical solutions owing to its high sensitivity, low cost, good reproducibility, and no need for any complex pretreatment.
