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The formation of Fe(III)-EDTA (FeY) − can be described as follows: FeSO 4 ∙7H 2 O + K 2 H 2 Y + 1/4 O 2 → K[FeY(H 2 O)]. H 2 O + KHSO 4 + 5.5 H 2 O (1) [8]. Iron chelate has also been used as a bait in the chemical control of slugs, snails and slaters in agriculture in Australia and New Zealand.
Treatments with iron(II) sulfate have higher incidence of adverse events than iron(III)-hydroxide polymaltose complex (IPC) [29] [30] [31] or iron bis-glycinate chelate. [32] [33] Iron overdose has been one of the leading causes of death caused by toxicological agents in children younger than six years. [34] Iron poisoning may result in ...
Virtually all this iron is in the iron(III) state and complexed to organic ligands. [38] These low levels of iron limit the primary production of phytoplankton and have led to the Iron Hypothesis [39] where it was proposed that an influx of iron would promote phytoplankton growth and thereby reduce atmospheric CO 2. This hypothesis has been ...
The iminodiacetate dianion is a tridentate ligand, forming metal complexes by forming two, fused, five membered chelate rings. [1] The proton on the nitrogen atom can be replaced by a carbon atom of a polymer to create an ion-exchange resin, such as chelex 100. Complexes of IDA and EDTA were introduced in the early 1950s by Schwarzenbach. [2]
For example, species of Pseudomonas are known to secrete pyochelin and pyoverdine that bind iron. Enterobactin , produced by E. coli , is the strongest chelating agent known. The marine mussels use metal chelation, especially Fe 3+ chelation with the Dopa residues in mussel foot protein-1 to improve the strength of the threads that they use to ...
DTPA under the form of iron(II) chelate (Fe-DTPA, 10 – 11 wt. %) is also used as aquarium plants fertilizer. The more soluble form of iron, Fe(II), is a micronutrient needed by aquatic plants. By binding to Fe 2+ ions DTPA prevents their precipitation as Fe(OH) 3, or Fe 2 O 3 · n H 2 O poorly soluble oxy-hydroxides after their oxidation by ...
Chelating resins operate similarly to ordinary ion-exchange resins. A tridentate metal complex with the iminodiacetate anion, illustrating the nature of the metal-binding site in some chelating resins
Chelation therapy is a medical procedure that involves the administration of chelating agents to remove heavy metals from the body. [1] Chelation therapy has a long history of use in clinical toxicology [2] and remains in use for some very specific medical treatments, although it is administered under very careful medical supervision due to various inherent risks, including the mobilization of ...
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