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Dissolution and chelation of metal elements [ edit ] Organic acids have the ability to dissolve soil minerals , and can destroy silicate minerals and iron and aluminum oxides , [ 8 ] so that metal ions are precipitated and complexed with organic complexing agents through ion exchange, surface absorption, and chelation-reaction mechanisms. [ 9 ]
Chelation therapy is an antidote for poisoning by mercury, arsenic, and lead. Chelating agents convert these metal ions into a chemically and biochemically inert form that can be excreted. Chelation using sodium calcium edetate has been approved by the U.S. Food and Drug Administration (FDA) for serious cases of lead poisoning.
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 ...
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.
BDTH 2 (also called BDET and BDETH 2; trade names B9, MetX, and OSR#1) is an organosulfur compound that is used as a chelation agent. [2] It is a colourless solid. The molecule consists of two thiol groups and linked via a pair of amide groups.
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2,2′-Bipyridine (2,2′-bipy) is a chelating ligand that forms complexes with most transition metal ions that are of broad academic interest. Many of these complexes have distinctive optical properties, and some are of interest for analysis.
Mulliken charges arise from the Mulliken population analysis [1] [2] and provide a means of estimating partial atomic charges from calculations carried out by the methods of computational chemistry, particularly those based on the linear combination of atomic orbitals molecular orbital method, and are routinely used as variables in linear regression (QSAR [3]) procedures. [4]