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A Colorimetric Method for Measuring Iron Content in Plants
07:12

A Colorimetric Method for Measuring Iron Content in Plants

Published on: September 7, 2018

Determination of iron in solutions with the ferric-xylenol orange complex

C Gay1, J Collins, J M Gebicki

  • 1Department of Biological Sciences, Macquarie University, Sydney, 2109, Australia.

Analytical Biochemistry
|September 2, 1999
PubMed

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Redox Titration: Other Oxidizing and Reducing Agents

Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...
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Complexometric titration involves the formation of a complex by reacting a metal ion with one or more ligands. A visual indicator often detects the end point of a complexometric titration. It is added to the metal solution before the titration, forming a stable metal–indicator complex and imparting color to the solution. As the titration approaches the equivalence point, the excess of the added ligand displaces the indicator from the metal–indicator complex, releasing the free indicator. The...
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