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Removal of lead contaminant from Cr surfaces by using H2O2/EDTA cleaner solution

Seyed Ghorban Hosseini1, Khodayar Gholivand, Mortezah Khosravi

  • 1Department of Chemistry, Malek Ashtar University of Technology, P.O. Box: 16765-3454, Tehran, Iran. hoseinitol@yahoo.com

Acta Chimica Slovenica
|July 12, 2013
PubMed

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is formed in...
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Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
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