Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene

Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene

A rapid, sensitive, and selective method for determination of thorium based on the complex with ortho-ester tetra-azophenylcalix[4]arene (TEAC) was described. In the presence of pH of 4–6, TEAC-Th(IV) complex is extracted from an acidic aqueous solution into chloroform layer. The absorbance intensit...

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Main Authors: Quang Hieu Tran, Van Tan Le, Van Cuong Nguyen
Format: Article
Language:English
Published: Hindawi Limited 2016-01-01
Series:Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2016/5078462
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spelling doaj-9f209b76e20a43ccb97f579b3eb0957e2020-11-24T22:56:11ZengHindawi LimitedJournal of Chemistry2090-90632090-90712016-01-01201610.1155/2016/50784625078462Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]areneQuang Hieu Tran0Van Tan Le1Van Cuong Nguyen2Saigon Technology University, 180 Cao Lo, Ho Chi Minh City 70000, VietnamDepartment of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Road, Ho Chi Minh City 70000, VietnamDepartment of Chemical Engineering, Industrial University of Ho Chi Minh City, 12 Nguyen Van Bao Road, Ho Chi Minh City 70000, VietnamA rapid, sensitive, and selective method for determination of thorium based on the complex with ortho-ester tetra-azophenylcalix[4]arene (TEAC) was described. In the presence of pH of 4–6, TEAC-Th(IV) complex is extracted from an acidic aqueous solution into chloroform layer. The absorbance intensity of complex was measured by UV-Vis spectrometer at 525 nm and the molar absorptivity was found to be 2.4 × 104. Beer’s law was obeyed in the range of 1.0 to 25 × 10−5 M thorium(IV). The effects of pH, TEAC concentration, and shaking time were also studied. The tolerance limits for several metal ions were calculated. The proposed method was applied to the determination of thorium in synthetic solution and in the monazite sand samples with good results.http://dx.doi.org/10.1155/2016/5078462
collection DOAJ
language English
format Article
sources DOAJ
author Quang Hieu Tran
Van Tan Le
Van Cuong Nguyen
spellingShingle Quang Hieu Tran
Van Tan Le
Van Cuong Nguyen
Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
Journal of Chemistry
author_facet Quang Hieu Tran
Van Tan Le
Van Cuong Nguyen
author_sort Quang Hieu Tran
title Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
title_short Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
title_full Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
title_fullStr Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
title_full_unstemmed Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
title_sort solvent extraction of thorium using 5,11,17,23-tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
publisher Hindawi Limited
series Journal of Chemistry
issn 2090-9063
2090-9071
publishDate 2016-01-01
description A rapid, sensitive, and selective method for determination of thorium based on the complex with ortho-ester tetra-azophenylcalix[4]arene (TEAC) was described. In the presence of pH of 4–6, TEAC-Th(IV) complex is extracted from an acidic aqueous solution into chloroform layer. The absorbance intensity of complex was measured by UV-Vis spectrometer at 525 nm and the molar absorptivity was found to be 2.4 × 104. Beer’s law was obeyed in the range of 1.0 to 25 × 10−5 M thorium(IV). The effects of pH, TEAC concentration, and shaking time were also studied. The tolerance limits for several metal ions were calculated. The proposed method was applied to the determination of thorium in synthetic solution and in the monazite sand samples with good results.
url http://dx.doi.org/10.1155/2016/5078462
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AT vantanle solventextractionofthoriumusing5111723tetra2ethylacetoethoxyphenylazophenylcalix4arene
AT vancuongnguyen solventextractionofthoriumusing5111723tetra2ethylacetoethoxyphenylazophenylcalix4arene
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