FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE

Multi-walled carbon nano-tubes was modified with sodium dodecyl sulfate and used as a solid phase extraction adsorbent for the determination of trace silver in radiological waste samples by flame absorption spectrometry. The effects of pH, initial silver ion concentration, sample flow rate and volum...

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Autores principales:	KAHKHA,MOHAMMAD REZA REZAEI, KAYKHAII,MASSOUD
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2015
Materias:	Multiwall Carbon Nanotubes Silver Ion Radiological Waste Sodium Dodecyl Sulfate Solid-Phase Extraction
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000400002
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spelling	oai:scielo:S0717-970720150004000022016-02-23FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATEKAHKHA,MOHAMMAD REZA REZAEIKAYKHAII,MASSOUD Multiwall Carbon Nanotubes Silver Ion Radiological Waste Sodium Dodecyl Sulfate Solid-Phase Extraction Multi-walled carbon nano-tubes was modified with sodium dodecyl sulfate and used as a solid phase extraction adsorbent for the determination of trace silver in radiological waste samples by flame absorption spectrometry. The effects of pH, initial silver ion concentration, sample flow rate and volume, elution conditions and the amount of adsorbent on the recovery of the analyte were investigated and optimized. The results showed that silver could be fully adsorbed at pH 7.0 and eluted by 5.0 mL 2% thiourea in HNO3 (0.1 mol.L-1). Under the optimized conditions, the adsorption capacity of modified multi-walled carbon nano-tubes was found to be 3.2 mg.g-1 of silver. The detection limit of the proposed method was 350 μg. L-1 for silver with an enrichment factor of 35. The relative standard deviation for ten replicate measurement of 0.5 ug of silver from 700 mL samples was 4.7%. The analytical procedure was successfully applied to the determination of trace silver in a few radiological waste samples with the recoveries between 94% and 105%. Graphite furnace atomic absorption spectrometric technique was also used for the comparison with the suggested method for the determination of the real samples.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.60 n.4 20152015-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000400002en10.4067/S0717-97072015000400002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Multiwall Carbon Nanotubes Silver Ion Radiological Waste Sodium Dodecyl Sulfate Solid-Phase Extraction
spellingShingle	Multiwall Carbon Nanotubes Silver Ion Radiological Waste Sodium Dodecyl Sulfate Solid-Phase Extraction KAHKHA,MOHAMMAD REZA REZAEI KAYKHAII,MASSOUD FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE
description	Multi-walled carbon nano-tubes was modified with sodium dodecyl sulfate and used as a solid phase extraction adsorbent for the determination of trace silver in radiological waste samples by flame absorption spectrometry. The effects of pH, initial silver ion concentration, sample flow rate and volume, elution conditions and the amount of adsorbent on the recovery of the analyte were investigated and optimized. The results showed that silver could be fully adsorbed at pH 7.0 and eluted by 5.0 mL 2% thiourea in HNO3 (0.1 mol.L-1). Under the optimized conditions, the adsorption capacity of modified multi-walled carbon nano-tubes was found to be 3.2 mg.g-1 of silver. The detection limit of the proposed method was 350 μg. L-1 for silver with an enrichment factor of 35. The relative standard deviation for ten replicate measurement of 0.5 ug of silver from 700 mL samples was 4.7%. The analytical procedure was successfully applied to the determination of trace silver in a few radiological waste samples with the recoveries between 94% and 105%. Graphite furnace atomic absorption spectrometric technique was also used for the comparison with the suggested method for the determination of the real samples.
author	KAHKHA,MOHAMMAD REZA REZAEI KAYKHAII,MASSOUD
author_facet	KAHKHA,MOHAMMAD REZA REZAEI KAYKHAII,MASSOUD
author_sort	KAHKHA,MOHAMMAD REZA REZAEI
title	FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE
title_short	FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE
title_full	FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE
title_fullStr	FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE
title_full_unstemmed	FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE
title_sort	flame atomic absorption spectrometric determination of trace amounts of silver in radiological waste samples after solid phase extraction using multi-walled carbon nano-tubes modified by sodium dodecyl sulfate
publisher	Sociedad Chilena de Química
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072015000400002
work_keys_str_mv	AT kahkhamohammadrezarezaei flameatomicabsorptionspectrometricdeterminationoftraceamountsofsilverinradiologicalwastesamplesaftersolidphaseextractionusingmultiwalledcarbonnanotubesmodifiedbysodiumdodecylsulfate AT kaykhaiimassoud flameatomicabsorptionspectrometricdeterminationoftraceamountsofsilverinradiologicalwastesamplesaftersolidphaseextractionusingmultiwalledcarbonnanotubesmodifiedbysodiumdodecylsulfate
_version_	1718445541994528768

FLAME ATOMIC ABSORPTION SPECTROMETRIC DETERMINATION OF TRACE AMOUNTS OF SILVER IN RADIOLOGICAL WASTE SAMPLES AFTER SOLID PHASE EXTRACTION USING MULTI-WALLED CARBON NANO-TUBES MODIFIED BY SODIUM DODECYL SULFATE

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