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http://hdl.handle.net/20.500.12358/26140
Title | Uptake of divalent metal ions (Cu2+, Ni2+, and Co2+) by polysiloxane immobilized triamine-thiol and thiol-acetate ligand system |
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Untitled | |
Abstract |
Insoluble porous solid polysiloxanes-immobilized ligand systems bearing hybrid mixture of triamine-thiol ligand and thiol-acetate ligand as chelating functional groups of the general formula P-(CH2)3-X(Y) (Where P represents a silica like siloxane framework and X represents a mixture of triamine and thiol, -NHCH2)2NH-(CH2)2-NH2 and –SH, and Y represents a thiol-acetate -SCH2COOH functional groups) has been prepared. The immobilized triamine-thiol ligand system was prepared through the sol-gel process by hydrolytic polycondensation of Si(OEt)4 and a mixture of 3-mercaptopropyltrimethoxysilane and 3-diethylenetriaminepropyltrimethoxysilane coupling agents. The immobilized thiol-acetate ligand system was prepared by the reaction of polysiloxane immobilized thiol ligand with ethylchloroacetate. These ligand systems exhibit high potential for extraction and preconcentration of divalent metal ions (Co … |
Type | Journal Article |
Date | 2001 |
Published in | Analytical letters |
Series | Volume: 34, Number: 12 |
Publisher | Taylor & Francis Group |
Citation | |
Item link | Item Link |
License | ![]() |
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Files in this item | ||
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El-Ashgar, Nizam M._8.pdf | 373.1Kb |