chelating agent

Catalan translation: Agent quelant

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:chelating agent
Catalan translation:Agent quelant

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15:58 Dec 16, 2009
English to Catalan translations [PRO]
Tech/Engineering - Chemistry; Chem Sci/Eng
Additional field(s): Engineering: Industrial
English term or phrase: chelating agent
Definition from Alconox, Inc.:
These are negatively charged or oxygen containing molecules that react with positively charged metal ions to form a stable complex. They have multiple locations in the molecule to react with multiple positive charges that may be present on multivalent metal ions that have more than one positive charge on them. An example of a chelating agent is EDTA, ethylene diamine tetraacetic acid. EDTA has four acetic acid groups giving it a potential for four negatively charged acetates to bond with up to four positively charged sites on metal ions with multiple positive charges, such as calcium which has two (2) positive charges associated with it.

Example sentence(s):
  • EDTA is a versatile chelating agent. It can form four or six bonds with a metal ion, and it forms chelates with both transition-metal ions and main-group ions. EDTA is frequently used in soaps and detergents, because it forms a complexes with calcium and magnesium ions. University of Wisconsin
  • HIDS shows superior performance as a chelating agent; high thermal stability, high solubility in concentrated alkaline solutions and low corrosion. NIPPON SHOKUBAI CO.
  • The extraction parameters were the type and concentration of chelating agent and the duration of extraction time. All the extractions that involved chelating agents were carried out at pH 7.0. The heavy metal extraction efficiencies of chelating agents were compared to those of HNO3, CaCl2, and deionized water. ASCE
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Agent quelant
Definition:
Reactiu orgànic que forma quelats amb cations.
Selected response from:

iolanda casacuberta
Spain
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Summary of translations provided
5 +2Agent quelant
iolanda casacuberta


  

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5 hrs   confidence: Answerer confidence 5/5 peer agreement (net): +2
Agent quelant


Definition from TERMCAT:
Reactiu orgànic que forma quelats amb cations.

Example sentence(s):
  • La natura dels enllaços establerts entre l'agent quelant i l'ió pot ésser covalent per compartició o per donació. L'aptitud d'un agent quelant per a complexar un catió determinat és condicionada principalment per factors de tipus estèric, el més important dels quals és la mida de l'anell que s'arribarà a formar. - L'Enciclopèdia Catalana  
  • En la purificació del DNA genòmic o cromosòmic la paret cel•lular bacteriana es "debilita" generalment mitjançant cicles de congelació-descongelació o bé per tractament amb lisozim i l'agent quelant de cations divalents, àcid etilendiaminotetraacètic (EDTA). - UAB  
  • Aquestes descomposicions dels peròxids d'hidrògen poden minimitzar-se mitjancant l'ús d'agents estabilitzants i agents quelants. - Universitat de Girona  
iolanda casacuberta
Spain
Local time: 05:42
Native speaker of: Native in CatalanCatalan, Native in SpanishSpanish
PRO pts in category: 8

Votes in favor of/against selecting this as the best translation of the term asked
Yes  Judith Payro: exacte :)
4 days
  -> Moltes gràcies, Judith. I bones festes!

Yes  Jordi Batlle Casas: Si ho diu el Termcat... endavant.
28 days
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