Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000400764 |
Resumo: | For the first time, dispersive solid phase extraction combined with headspace sampling was introduced and applied to separation and pre-concentration of polycyclic aromatic hydrocarbons (PAHs) as representative of volatile and semi-volatile compounds, from aqueous solutions and sediments using multiwall carbon nanotubes (MWCNTs). After adsorption, PAHs were desorbed thermally from the surface of MWCNTs using a gas chromatography mass spectrometry (GC-MS) CombiPAL headspace device or a homemade thermal desorption system. Pre-concentration was maximized through optimization of solution pH, sorbent amount, and extraction time as well as desorption time and temperature of PAHs. The calibration curves were linear in the range 0.005-30 ng mL-1 for 13 PAHs at optimum conditions, with the coefficients of determination (R2) above 0.992, and detection limit in the range of 0.0021 to 0.0045 ng mL-1. Reproducibility for all PAHs was between 1.6 and 4.2%. Method recoveries were in the range of 94.0-102% for threeReferences spiked levels (1, 10, 20 ng mL-1). The methodology is even better if the selective or specific magnetic sorbent is used. |
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Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbonsdispersive solid phase extractionheadspace samplingpolycyclic aromatic hydrocarbongas chromatography mass spectrometrymultiwall carbon nanotubesFor the first time, dispersive solid phase extraction combined with headspace sampling was introduced and applied to separation and pre-concentration of polycyclic aromatic hydrocarbons (PAHs) as representative of volatile and semi-volatile compounds, from aqueous solutions and sediments using multiwall carbon nanotubes (MWCNTs). After adsorption, PAHs were desorbed thermally from the surface of MWCNTs using a gas chromatography mass spectrometry (GC-MS) CombiPAL headspace device or a homemade thermal desorption system. Pre-concentration was maximized through optimization of solution pH, sorbent amount, and extraction time as well as desorption time and temperature of PAHs. The calibration curves were linear in the range 0.005-30 ng mL-1 for 13 PAHs at optimum conditions, with the coefficients of determination (R2) above 0.992, and detection limit in the range of 0.0021 to 0.0045 ng mL-1. Reproducibility for all PAHs was between 1.6 and 4.2%. Method recoveries were in the range of 94.0-102% for threeReferences spiked levels (1, 10, 20 ng mL-1). The methodology is even better if the selective or specific magnetic sorbent is used.Sociedade Brasileira de Química2019-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000400764Journal of the Brazilian Chemical Society v.30 n.4 2019reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0103-5053.20180198info:eu-repo/semantics/openAccessRamezani,ZahraKardani,FatemehRahbar,NaderehBabapoor,AhmadBahrami,Faribaeng2019-03-12T00:00:00Zoai:scielo:S0103-50532019000400764Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2019-03-12T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
title |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
spellingShingle |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons Ramezani,Zahra dispersive solid phase extraction headspace sampling polycyclic aromatic hydrocarbon gas chromatography mass spectrometry multiwall carbon nanotubes |
title_short |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
title_full |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
title_fullStr |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
title_full_unstemmed |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
title_sort |
Dispersive Solid Phase Extraction Headspace Sampling in Gas Chromatography-Mass Spectrometric Analysis of Volatiles: Application to Separation of Polycyclic Aromatic Hydrocarbons |
author |
Ramezani,Zahra |
author_facet |
Ramezani,Zahra Kardani,Fatemeh Rahbar,Nadereh Babapoor,Ahmad Bahrami,Fariba |
author_role |
author |
author2 |
Kardani,Fatemeh Rahbar,Nadereh Babapoor,Ahmad Bahrami,Fariba |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Ramezani,Zahra Kardani,Fatemeh Rahbar,Nadereh Babapoor,Ahmad Bahrami,Fariba |
dc.subject.por.fl_str_mv |
dispersive solid phase extraction headspace sampling polycyclic aromatic hydrocarbon gas chromatography mass spectrometry multiwall carbon nanotubes |
topic |
dispersive solid phase extraction headspace sampling polycyclic aromatic hydrocarbon gas chromatography mass spectrometry multiwall carbon nanotubes |
description |
For the first time, dispersive solid phase extraction combined with headspace sampling was introduced and applied to separation and pre-concentration of polycyclic aromatic hydrocarbons (PAHs) as representative of volatile and semi-volatile compounds, from aqueous solutions and sediments using multiwall carbon nanotubes (MWCNTs). After adsorption, PAHs were desorbed thermally from the surface of MWCNTs using a gas chromatography mass spectrometry (GC-MS) CombiPAL headspace device or a homemade thermal desorption system. Pre-concentration was maximized through optimization of solution pH, sorbent amount, and extraction time as well as desorption time and temperature of PAHs. The calibration curves were linear in the range 0.005-30 ng mL-1 for 13 PAHs at optimum conditions, with the coefficients of determination (R2) above 0.992, and detection limit in the range of 0.0021 to 0.0045 ng mL-1. Reproducibility for all PAHs was between 1.6 and 4.2%. Method recoveries were in the range of 94.0-102% for threeReferences spiked levels (1, 10, 20 ng mL-1). The methodology is even better if the selective or specific magnetic sorbent is used. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000400764 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532019000400764 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.21577/0103-5053.20180198 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.30 n.4 2019 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
_version_ |
1750318181679890432 |