1,10-Phenanthroline Modulated Redox Potentials Explored for Benign Iron Speciation Analysis
نویسندگان
چکیده
The objective of this study is to develop a simple, environmentally benign alternate analytical method for simultaneous estimation of iron oxidation states. This proposed method of iron speciation is based on 1,10-phenanthroline (phen) modified redox potential of transition metal ions. In a pre-step excess cerium(IV) oxidizes iron(II) in sample to iron(III). Initial back titration of un-reacted cerium(IV) with cobalt(II) in presence of phen gives amount of iron(II) in sample, reduction of iron(III) with cobalt(II) is then used to estimate total iron as iron(III). The potentiometric titration method has been successfully tested for determinations of iron(II) and total iron in synthetic and natural samples and represents a distinctively green alternative to other reported protocols of iron speciation analysis. (doi: 10.5562/cca2167)
منابع مشابه
Flow injection analysis of water. Part 1: Automatic preconcentration determination of sulphate, ammonia and iron(II)/iron(III)
This paper describes a simple flow-injection (FI) manifold for the determination of a variety of species in industrial water. The chemical systems involved in the determination of ammonia (formation of Indophenol Blue), sulfate (precipitation with Ba(II)), and iron (complexation with 1,10-phenanthroline with the help of a prior redox reaction for speciation) were selected so that a common manif...
متن کاملSpectrophotometric Determination of Iron(II) with 5-Nitro-6-amino-1,10-phenanthroline
Gravimetric, titrimetric, polarographic, optical and radiochemical methods have been reported for the determination of iron(II) and (III). Numerous reagents have also been reported for the spectrophotometric determination of Fe(II); for example, thiocyanate, dipyridine, tripyridine and 1,10-phenanthroline. The 1,10phenanthroline family has been extended to the use of dihydroxy, dimethyl, nitro ...
متن کاملSynthesis, characterization, and stability of iron (III) complex ions possessing phenanthroline-based ligands.
It has previously been demonstrated that phenanthroline-based ligands used to make gold metallotherapuetics have the ability to exhibit cytotoxicity when not coordinated to the metal center. In an effort to help assess the mechanism by which these ligands may cause tumor cell death, iron binding and removal experiments have been considered. The close linkage between cell proliferation and intra...
متن کاملThe release of iron from horse spleen ferritin to 1,10-phenanthroline.
The rate of release of iron to 1,10-phenanthroline from ferritin fractions of different iron contents has been studied. The experimental results could be interpreted by a simple hypothetical model of the shape of the hydrous ferric oxide micelle at different iron contents, and reasonable correlation obtained between the rate of release and the calculated micelle surface areas. Initial rates of ...
متن کاملMicrowave synthesis of Tris-(1,10-phenanthroline)Manganese(II) complex and its electrochemical sensing property of catechol
Tris-1,10-phenanthroline manganese(II) complex was synthesized by microwave irradiation. The synthesized complex was characterized by UV-visible and FT-IR spectroscopy. Its electrochemical behaviour was examined by cyclic voltammetry (CV). The tris-1,10-phenanthroline manganese(II) complex was used for the electrochemical sensing of catechol. The manganese ion gets reduced as the oxidation of c...
متن کامل