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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Format: | Article |
Language: | English |
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Elsevier
2013-07-01
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Series: | Journal of Advanced Research |
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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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issn | 2090-1232 2090-1224 |
language | English |
last_indexed | 2024-04-12T23:37:22Z |
publishDate | 2013-07-01 |
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series | Journal of Advanced Research |
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 |
work_keys_str_mv | AT mahmoudchamsaz preconcentrationofleadusingsolidificationoffloatingorganicdropanditsdeterminationbyelectrothermalatomicabsorptionspectrometry AT jeiranakhoundzadeh preconcentrationofleadusingsolidificationoffloatingorganicdropanditsdeterminationbyelectrothermalatomicabsorptionspectrometry AT mohammadhosseinarbabzavar preconcentrationofleadusingsolidificationoffloatingorganicdropanditsdeterminationbyelectrothermalatomicabsorptionspectrometry |