chelation (redirected from Sequestering agent)

Chelation

The process by which a molecule encircles and binds to a metal and removes it from tissue.

Mentioned in: Heavy Metal Poisoning

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chelation

[kēlā′shən]

a chemical reaction in which there is a combination with a metal to form a ring-shaped molecular complex in which the metal is firmly bound and isolated. See also chelating agent.

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chelation (kē·lāˑ·shn),

n 1. medical treatment in which heavy metals are flushed from the bloodstream by means of a chelator that binds metal ions; used in cases of mercury or lead poisoning.
2. the process of ring formation by forming one or more hydrogen bonds.

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chelation (kēlā´shn),

n chemical reaction of a metallic ion (e.g., calcium ion) with a suitable reactive compound (e.g., ethylenediamine tetra-acetic acid) to form a compound in which the metal ion is tightly bound.

chelation therapy,

n the use of a chelating agent to bind firmly and sequester metallic poisons.