Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry

A simple microextraction method based on solidification of a floating organic drop (SFOD) was developed for preconcentration of lead prior to its determination by electrothermal atomic absorption spectrometry (ETAAS). Ammonium pyrolidinedithiocarbamate (APDC) was used as complexing agent, and the fo...

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Main Authors: Mahmoud Chamsaz, Jeiran Akhoundzadeh, Mohammad Hossein Arbab-zavar
Format: Article
Language:English
Published: Elsevier 2013-07-01
Series:Journal of Advanced Research
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2090123212000513
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author Mahmoud Chamsaz
Jeiran Akhoundzadeh
Mohammad Hossein Arbab-zavar
author_facet Mahmoud Chamsaz
Jeiran Akhoundzadeh
Mohammad Hossein Arbab-zavar
author_sort Mahmoud Chamsaz
collection DOAJ
description A simple microextraction method based on solidification of a floating organic drop (SFOD) was developed for preconcentration of lead prior to its determination by electrothermal atomic absorption spectrometry (ETAAS). Ammonium pyrolidinedithiocarbamate (APDC) was used as complexing agent, and the formed complex was extracted into a 20 μL of 1-undecanol. The extracted complex was diluted with ethanol and injected into a graphite furnace. An orthogonal array design (OAD) with OA16 (45) matrix was employed to study the effects of different parameters such as pH, APDC concentration, stirring rate, sample solution temperature and the exposure time on the extraction efficiency. Under the optimized experimental conditions the limit of detection (based on 3 s) and the enhancement factor were 0.058 μg L−1 and 113, respectively. The relative standard deviation (RSD) for 8 replicate determinations of 1 μg L−1 of Pb was 8.8%. The developed method was validated by the analysis of certified reference materials and was successfully applied to the determination of lead in water and infant formula base powder samples.
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spelling doaj.art-8d4cea6a83974b8d90fe593185bc0a8f2022-12-22T03:12:06ZengElsevierJournal of Advanced Research2090-12322090-12242013-07-014436136610.1016/j.jare.2012.07.002Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometryMahmoud ChamsazJeiran AkhoundzadehMohammad Hossein Arbab-zavarA simple microextraction method based on solidification of a floating organic drop (SFOD) was developed for preconcentration of lead prior to its determination by electrothermal atomic absorption spectrometry (ETAAS). Ammonium pyrolidinedithiocarbamate (APDC) was used as complexing agent, and the formed complex was extracted into a 20 μL of 1-undecanol. The extracted complex was diluted with ethanol and injected into a graphite furnace. An orthogonal array design (OAD) with OA16 (45) matrix was employed to study the effects of different parameters such as pH, APDC concentration, stirring rate, sample solution temperature and the exposure time on the extraction efficiency. Under the optimized experimental conditions the limit of detection (based on 3 s) and the enhancement factor were 0.058 μg L−1 and 113, respectively. The relative standard deviation (RSD) for 8 replicate determinations of 1 μg L−1 of Pb was 8.8%. The developed method was validated by the analysis of certified reference materials and was successfully applied to the determination of lead in water and infant formula base powder samples.http://www.sciencedirect.com/science/article/pii/S2090123212000513MicroextractionOrthogonal array designElectrothermal atomic absorptionMilk powder sampleLeadAmmonium pyrolidinedithiocarbamate
spellingShingle Mahmoud Chamsaz
Jeiran Akhoundzadeh
Mohammad Hossein Arbab-zavar
Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
Journal of Advanced Research
Microextraction
Orthogonal array design
Electrothermal atomic absorption
Milk powder sample
Lead
Ammonium pyrolidinedithiocarbamate
title Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
title_full Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
title_fullStr Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
title_full_unstemmed Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
title_short Preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
title_sort preconcentration of lead using solidification of floating organic drop and its determination by electrothermal atomic absorption spectrometry
topic Microextraction
Orthogonal array design
Electrothermal atomic absorption
Milk powder sample
Lead
Ammonium pyrolidinedithiocarbamate
url http://www.sciencedirect.com/science/article/pii/S2090123212000513
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AT jeiranakhoundzadeh preconcentrationofleadusingsolidificationoffloatingorganicdropanditsdeterminationbyelectrothermalatomicabsorptionspectrometry
AT mohammadhosseinarbabzavar preconcentrationofleadusingsolidificationoffloatingorganicdropanditsdeterminationbyelectrothermalatomicabsorptionspectrometry