PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES

A new analytical method using 1,8-dihydroxyanthraquinone modified SiO2 nanoparticles as solid-phase extractant has been developed for the preconcentration of trace amounts of Cd2+ in different samples. Conditions of the analysis such as preconcentration factor, effect of pH, sample volume, shaking t...

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Autores principales:	KAUR,ANUPREET, GUPTA,USHA
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2011
Materias:	Chemically modified SiO-nanoparticles 1,8-dihydroxyanthraquinone Preconcentration Separation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000200005
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spelling	oai:scielo:S0717-970720110002000052011-09-01PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLESKAUR,ANUPREETGUPTA,USHA Chemically modified SiO-nanoparticles 1,8-dihydroxyanthraquinone Preconcentration Separation A new analytical method using 1,8-dihydroxyanthraquinone modified SiO2 nanoparticles as solid-phase extractant has been developed for the preconcentration of trace amounts of Cd2+ in different samples. Conditions of the analysis such as preconcentration factor, effect of pH, sample volume, shaking time, elution conditions and effects of interfering ions for the recovery of analyte were investigated. The adsorption capacity of nanometer SiO2-DHAQ was found to be 85.83 μmol/g at optimum pH and the detection limit (3σ) was 0.60ng/mL. The extractant showed rapid kinetic sorption. The adsorption equilibrium of Cd²+ on nanometer SiO2-DHAQ was achieved within 20 min. Adsorbed Cd²+ was easily eluted with 6mL of 1M hydrochloric acid. The maximum preconcentration factor has been found to be 66.70. The method was applied for the determination of trace amounts of Cd²+ in different samples.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.56 n.2 20112011-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000200005en10.4067/S0717-97072011000200005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chemically modified SiO-nanoparticles 1,8-dihydroxyanthraquinone Preconcentration Separation
spellingShingle	Chemically modified SiO-nanoparticles 1,8-dihydroxyanthraquinone Preconcentration Separation KAUR,ANUPREET GUPTA,USHA PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES
description	A new analytical method using 1,8-dihydroxyanthraquinone modified SiO2 nanoparticles as solid-phase extractant has been developed for the preconcentration of trace amounts of Cd2+ in different samples. Conditions of the analysis such as preconcentration factor, effect of pH, sample volume, shaking time, elution conditions and effects of interfering ions for the recovery of analyte were investigated. The adsorption capacity of nanometer SiO2-DHAQ was found to be 85.83 μmol/g at optimum pH and the detection limit (3σ) was 0.60ng/mL. The extractant showed rapid kinetic sorption. The adsorption equilibrium of Cd²+ on nanometer SiO2-DHAQ was achieved within 20 min. Adsorbed Cd²+ was easily eluted with 6mL of 1M hydrochloric acid. The maximum preconcentration factor has been found to be 66.70. The method was applied for the determination of trace amounts of Cd²+ in different samples.
author	KAUR,ANUPREET GUPTA,USHA
author_facet	KAUR,ANUPREET GUPTA,USHA
author_sort	KAUR,ANUPREET
title	PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES
title_short	PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES
title_full	PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES
title_fullStr	PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES
title_full_unstemmed	PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES
title_sort	preconcentration of cd2+ in different samples by chemically modified sio2-dhaq nanoparticles
publisher	Sociedad Chilena de Química
publishDate	2011
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072011000200005
work_keys_str_mv	AT kauranupreet preconcentrationofcd2indifferentsamplesbychemicallymodifiedsio2dhaqnanoparticles AT guptausha preconcentrationofcd2indifferentsamplesbychemicallymodifiedsio2dhaqnanoparticles
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PRECONCENTRATION OF Cd2+ IN DIFFERENT SAMPLES BY CHEMICALLY MODIFIED SIO2-DHAQ NANOPARTICLES

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