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Abstract
Author(s) -
LAURA BULGARIU
Publication year - 2021
Publication title -
vox sanguinis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.68
H-Index - 83
eISSN - 1423-0410
pISSN - 0042-9007
DOI - 10.1111/vox.13117
Subject(s) - medicine
This study presents the efficiency of Au(III) ions extraction in aqueous two phase systems (ATPS) based on polyethylene glycol (PEG) 40% (w/w) and (NH4)2SO4 40% (w/w), in the presence of chloride ions with a concentration of 0.5 mol/L as extracting agents and a pH of 4.5 of the inorganic salt. The influence of two experimental parameters was studied: PEG molecular weight and volume ratio between the two phases. Experimental results showed that with the increasing of the PEG molecular weight the quantity of Au(III) ions extracted in PEG rich phase increases (67.78% for PEG(2000), 75% for PEG(4000) and 86.19% for PEG(6000), values obtained for a volume ratio (NH4)2SO4 : PEG of 5:4). Also, the extraction efficiency showed an important decrease for a (NH4)2SO4 : PEG volume ratio >2 because of the hydrophobicity of the environment that decreases.