1) Chelating agent 2) Process 3) The process of chelating
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Chelation describes a particular way that ions and molecules bind metal ions. According to the International Union of Pure and Applied Chemistry (IUPAC), chelation involves the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atom. Usually these ligands are organic c...
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http://en.wikipedia.org/wiki/Chelation
combination with a metal in complexes in which the metal is part of a ring.
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The formation or presence of bonds (or other attractive interactions) between two or more separate binding sites within the same ligand and a single central atom. A molecular entity in which there is chelation (and the corresponding chemical species) is called a 'chelate'. The terms bidentate (or didentate), tridentate, tetradentate... multidentate...
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http://www.chem.qmul.ac.uk/iupac/gtpoc/CaCl.html
In chemistry, this describes the combination of a metallic ion with heterocyclic ring structures in such a way that the ion is held by bonds from each of the rings.
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http://www.chemicalglossary.net/definition/391-Chelation
A chemical reaction in which a certain type of organic compound, known as a chelating agent, combines with a metal ion by forming coordinate bonds with two or more atoms of the organic compound. Examples of chelating agents include tartaric acid (CHOHCOOH)
2 and ethylenediamine...
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http://www.daviddarling.info/encyclopedia/C/chelation.html
Using a chelating agent that will bind with metals in order to try to release them from the body. With autism, this might be done in order to test for mercury levels.
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A chemical process involving formation of a heterocyclic ring compound that contains at least one metal cation or hydrogen ion in the ring.
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http://www.encyclo.co.uk/local/20742
<biochemistry, chemistry> Combination with a metal in complexes in which the metal is part of a ring. ... (21 May 1997) ...
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(ke-la´shәn) combination with a metal in complexes in which the metal is part of a ring. See also chelate.
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http://www.encyclo.co.uk/local/21001
A chemical process involving formation of a heterocyclic ring compound that contains at least one metal cation or hydrogen ion in the ring
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http://www.encyclo.co.uk/local/21115
In chemistry, this describes the combination of a metallic ion with heterocyclic ring structures in such a way that the ion is held by bonds from each of the rings.
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The trapping of a multi-valent ionic species by ionic bonding to a larger water soluble molecule so as to render the ion inactive in the biological matrix and to aid excretion.
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Binding of a metal ion by a larger molecule such as EDTA or protein (iron in haem is held as a chelate). The binding is strong but reversible and chelating agents can be used to buffer the free concentration of the ion in question.
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Type: Term Pronunciation: kē-lā′shŭn Definitions: 1. Complex formation involving a metal ion and two or more polar groupings of a single molecule; in heme, the Fe2+ ion is chelated by the porphyrin ring. Chelation can be used to remove an ion from participation in biologic reactions, as in the chelation of Ca2+ of blood by EDTA...
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http://www.medilexicon.com/medicaldictionary.php?t=16633
Chemical weathering process that involves the extraction or metallic cations from rocks and minerals by chelates.
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http://www.physicalgeography.net/physgeoglos/c.html
[
n] - (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning 2. [n] - the process of forming a ring by forming one or more hydrogen bonds
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http://www.webdictionary.co.uk/definition.php?query=chelation
Chemical means of removing heavy metals, such as mercury from the body. Some people believe that autism is caused by an excess of heavy metals in people with autism.
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A process in which a metal ion is coordinatively bound to an organic molecule forming a heterocyclic ring.
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https://www.encyclo.co.uk/local/22437
the process of chelating. · · a method of removing certain heavy metals from the bloodstream, used esp. in treating lead or mercury poisoning. · a controversial treatment for arteriosclerosis that attempts to remove calcium deposits from the inner walls of the coronary arteries.
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https://www.infoplease.com/dictionary/chelation
The formation of bonds between organic compounds and metals, some of which are insoluble, as in humus. Soluble chelates are used in fertilizers to help keep nutrient metals, such as iron, mobile in the soil and thus available to plants rather than locked up in insoluble mineral salts.
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https://www.planetnatural.com/vegetable-gardening-guru/garden-terms/
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