Heavy-metal extraction capability of chalcogenoic aminophosphines derived from 1-amino-4-methylpiperazine
Küçük Resim Yok
Tarih
2013
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
VERSITA
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Aminophosphine of the type (Ph2PNHR) derived from 1-amino-4-methylpiperazine and its chalcogen derivatives (Ph2P(X)NHR X = S, Se) were used as ligands in solvent extraction of metal picrates such as Cu2+, Ni2+, and Pb2+ from the aqueous to the organic phase. Influence of parameters such as pH of the aqueous phase, ligand concentration in the organic phase, and concentration of the extractant extracted from the aqueous to the organic phase was investigated to determine the ligands' ability to extract metal ions. Metal picrate extraction was investigated at 25A degrees C using UV-VIS spectrophotometry in dichloromethane in the absence and in the presence of Ph2PNHR and chalcogenides. The extraction results revealed that the extraction percentage of Cu2+, Ni2+, and Pb2+ metals was much higher at lower pH values, indicating an acidity dependent complexation equilibrium.
Açıklama
Anahtar Kelimeler
aminophosphines, chalcogenides, extraction, heavy metals
Kaynak
CHEMICAL PAPERS
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
67
Sayı
10
