Heavy-metal extraction capability of chalcogenoic aminophosphines derived from 1-amino-4-methylpiperazine

Küçük Resim Yok

Tarih

2013

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

Künye