Effects of quaternary ammonium bases on valence-saturated but coordination-unsaturated chelates
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説明
Abstract The effects of tetradecyldimethylbenzylammonium chloride (zephiramine), a quaternary ammonium base, on chelate formation and extraction of metals were studied. By the action of zephiramine, the non-extractable 1:1 calcium- or cadmium—glyoxal bis-(2-hydroxyanil) chelate changes to an extractable uncharged chelate, Ca(A)(H 2 A) or Cd(A)(H 2 A), by replacing water molecules with GHA molecules (H 2 A). This is a new type of synergism. In the presence of zephiramine, the non-extractable 1:1 zinc or nickel- o -(salicylideneamino) phenol chelate also changes to a negatively charged Zn(L) 2 2- or Ni(L) 2 2- chelate which can be extracted by coupling with two molecules of zephiramine.
収録刊行物
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- Analytica Chimica Acta
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Analytica Chimica Acta 70 121-126, 1974-05-01
Elsevier BV