Online Google Dictionary

chelator 中文解釋 wordnet sense Collocation Usage Collins Definition
  1. (chelation) (medicine) the process of removing a heavy metal from the bloodstream by means of a chelate as in treating lead or mercury poisoning
  2. (chelation) the process of forming a ring by forming one or more hydrogen bonds
  3. Chelation is the formation or presence of two or more separate bindings between a polydentate (multiple bonded) ligand and a single central atom. Usually these ligands are organic compounds, and are called chelants, chelators, chelating agents, or sequestering agents.
  4. (chelation) the formation of a polydentate chelate compound from a metal salt; the use of this process to remove metal ions from solution, especially to counter poisoning by heavy metals
  5. (Chelators) Synthetic organic acids that enable Iron and other trace elements to be absorbed easily by the plants.
  6. (Chelating) A deep cleansing process which strips the hair lightly before a chemical service. Also known as clarifying.
  7. (Chelating) contain two or more atoms that tend to bind to a single metal atom, example - acetylacetonate (acac); abbreviation usually k^2.
  8. (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.
  9. (Chelation) is a medical treatment to improve metabolic and circulatory function by removing toxic metals and abnormally located ions from the body by intravenously administering the synthetic amino acid, EDTA. ...
  10. (Chelation) combining of metallic ions with certain heterocyclic ring structures so that the ion is held by chemical bonds from each of the participating rings; chelating agents are commonly used to remove toxic metals from the body.
  11. (Chelation) The process of removing toxic, unwanted heavy metals from the tissues and organs of the body.
  12. (CHELATION) The process by which a molecule encircles and binds to a metal and removes it from tissue.
  13. (CHELATION) the process by which both naturally occurring and artificial agents can be used as sequestering agents, thereby making radionuclides and other chemicals in a particular media available for transfer to another environment. ...
  14. (Chelation) A combiation of a mineral with a larger molecule.
  15. (Chelation) A therapy used to remove excess iron from the blood and tissues by providing drugs to which iron is bound and then excreted.
  16. (Chelation) Chemical binding of metals by organic compounds. Especially important in soil chemistry and the formation of Spodosols. Decreases the chemical reactivity and increases the mobility of iron and aluminum in soils.
  17. (Chelation) Controversial therapy, claimed to remove heavy metal contaminants from blood.
  18. (Chelation) Process by which certain micronutrients are treated to keep them readily available to a plant once they are introduced into the soil. Some of the micronutrients which would not remain available without chelation are copper, iron, magnesium, manganese and zinc.
  19. (Chelation) The use of a medication or herbal substances to inactivate toxic substances in the body. Chelation is used to treat iron overload in some patients.
  20. (Chelation) a form of chemical weathering. Organic acids released during decomposition release iron and aluminium from the A horizon and combine with them to form chelates.
  21. (chelation) A chemical complexing (forming or joining together) of metallic cations (such as copper) with certain organic compounds, such as EDTA (ethylene diamine tetracetic acid). Chelation is used to prevent the precipitation of metals (copper).
  22. (chelation) The process whereby some types of chemical molecules can attach to or bind metal cations.
  23. Chelation involves the binding of heavy metals or other toxins in the blood using drugs with a high affinity for these compounds. The use of chelation for people with ASD is very controversial.
  24. Chelation is the solubilization of a metal salt by forming a chemical complex or sequestering. One way of doing this is with ethylenediaminetetra-acetic acid (EDTA) salts, which have a multidentate spiral ligand form that can surround metallic and other ions.
  25. A chelating agent is a water soluble molecule that can bond tightly with metal ions, keeping them from coming out of suspension and depositing their stains and scale onto pool surfaces and equipment. Similar to sequestering agents.