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How do you test for iron III ions?

Metal ions in aqueous solution

Chelating resin

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Journal Article•DOI Aptamer conjugated silver nanoparticles for the colorimetric detection of arsenic ions using response surface methodology Faten Divsar, Kazhal Habibzadeh, Shahab Shariati, Mehdi Shahriarinour - Show less +3 more 28 May 2015-Analytical Methods 85 Citations	Moreover, this assay was able to detect As(III) ions with high sensitivity and revealed to have remarkable potential applications.
Journal Article•DOI Comment on 'Measuring Marine Iron(III) Complexes by CLE-AdSV' Keith A. Hunter 14 Jul 2005-Environmental Chemistry 13 Citations	Consistent experimental measurements for iron and other metals and the use of other techniques suggests that their interpretation of iron(III) being non-bioavailable is incorrect and, rather, the use of CLE-AdSV needs to be modified.
Journal Article•DOI Amperometry with two polarisable electrodes—III: Chelometric determination of iron(III) using an indication system of two carbon electrodes J. Vorlíček, F. Vydra - Show less +1 more 01 Apr 1965-Talanta 6 Citations	It is possible to determine 1–150 mg of iron(III).
Journal Article•DOI Synthesis and application of a new chelating resin functionalized with 2,3-dihydroxy benzoic acid for Fe(III) determination in water samples by flame atomic absorption spectrometry Mohammad Saeid Hosseini, Haidar Raissi, Sara Madarshahian - Show less +2 more 01 Dec 2006-Reactive & Functional Polymers 38 Citations	The recoveries obtained for the spiked trace amount of Fe(III) ions were >95%, which confirmed the reliability of the method.
Journal Article•DOI New hydrophilic 3-hydroxy-4-pyridinone chelators with ether-derived substituents: Synthesis and evaluation of analytical performance in the determination of iron in waters Tânia Moniz, Luís Cunha-Silva, Raquel B. R. Mesquita, Joana L.A. Miranda, André M. N. Silva, Ana M. G. Silva, António O. S. S. Rangel, Baltazar de Castro, Maria Rangel - Show less +8 more 01 Mar 2019-Polyhedron 11 Citations	The results obtained are scientifically relevant, pointing out the potential of the new and straightforwardly synthesized ligands as analytical reagents for determination of iron(III).
Journal Article•DOI Catalytic determination of nanogram amounts from iron(III) using its catalytic effect on the oxidation of sodium pyrogallol-5-sulphonate by hydrogen peroxide. Snezana S. Mitic, Gordana Z. Miletic, Mirjana V. Obradović - Show less +2 more 01 Sep 1995-Talanta 14 Citations	It has been applied satisfactorily to the determination of iron(III) in tap water samples.

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Importance ofe Fe(III) in marine sediments?5 answersFe(III) in marine sediments plays a crucial role in various biogeochemical processes. It is an important source of Fe(II) in illuminated aquatic and sedimentary environments, where Fe(III) can be photoreduced to Fe(II) by wavelengths <500 nm. The coprecipitation of dissolved organic matter (DOM) and phosphate with Fe(III) at the sediment-water interface contributes to the biogeochemical cycle of organic carbon (OC) and phosphorus (P) in aquatic ecosystems. Fe(III)-reducing bacteria are enriched in marine sediments, with dominant bacteria such as Clostridium and Enterobacter sp. being responsible for high Fe(III) reduction rates. Post-depositional chemical reactions involving iron in shallow-marine sediments govern the types of minerals that precipitate, influencing sedimentary environments and mineral-water-bacteria interactions. The activity of nitrate-reducing and phototrophic Fe(II)-oxidizers, as well as microbial Fe-redox cycling, is influenced by the organic carbon content in coastal marine sediments.

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