Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses
Autor(a) principal: | |
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Data de Publicação: | 1999 |
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=S0103-50531999000600015 |
Resumo: | Gamma radiation induced immobilization of several polydimethylsilane liquid stationary phases for use in packed-column gas chromatographic separations has been studied. Extraction tests show that moderate doses of gamma radiation (80-140 kGy) are sufficient to produce significant (90%) immobilization of most polydimethylsilanes onto Chromosorb supports, although a molecular mass effect is seen. Thermal stability also increases significantly with radiation dose, suggesting higher temperature use with smaller volatility losses. Infrared spectra confirm the continued presence of the stationary phase on the support after thermal stability tests and after exhaustive in-column washing. The column chromatographic behavior of the immobilized phases is equal to or better than that of the unirradiated phases, except for higher doses (300 kGy) of gamma-radiation. Columns prepared from gamma-immobilized polydimethylsilane have been used successfully in analyses where column contamination from high boiling materials requires frequent column recuperation. |
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Journal of the Brazilian Chemical Society (Online) |
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Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analysesgas chromatographypacked columnsimmobilized phasesgamma radiationGamma radiation induced immobilization of several polydimethylsilane liquid stationary phases for use in packed-column gas chromatographic separations has been studied. Extraction tests show that moderate doses of gamma radiation (80-140 kGy) are sufficient to produce significant (90%) immobilization of most polydimethylsilanes onto Chromosorb supports, although a molecular mass effect is seen. Thermal stability also increases significantly with radiation dose, suggesting higher temperature use with smaller volatility losses. Infrared spectra confirm the continued presence of the stationary phase on the support after thermal stability tests and after exhaustive in-column washing. The column chromatographic behavior of the immobilized phases is equal to or better than that of the unirradiated phases, except for higher doses (300 kGy) of gamma-radiation. Columns prepared from gamma-immobilized polydimethylsilane have been used successfully in analyses where column contamination from high boiling materials requires frequent column recuperation.Sociedade Brasileira de Química1999-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000600015Journal of the Brazilian Chemical Society v.10 n.6 1999reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50531999000600015info:eu-repo/semantics/openAccessAdaime,M.B.Santos,M.J.T.F. dosFacchin,I.Collins,K.E.Collins,C.H.eng2001-06-01T00:00:00Zoai:scielo:S0103-50531999000600015Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2001-06-01T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
title |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
spellingShingle |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses Adaime,M.B. gas chromatography packed columns immobilized phases gamma radiation |
title_short |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
title_full |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
title_fullStr |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
title_full_unstemmed |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
title_sort |
Gamma radiation effects on polydimethylsilane stationary phases for use in packed-column gas chromatographic analyses |
author |
Adaime,M.B. |
author_facet |
Adaime,M.B. Santos,M.J.T.F. dos Facchin,I. Collins,K.E. Collins,C.H. |
author_role |
author |
author2 |
Santos,M.J.T.F. dos Facchin,I. Collins,K.E. Collins,C.H. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Adaime,M.B. Santos,M.J.T.F. dos Facchin,I. Collins,K.E. Collins,C.H. |
dc.subject.por.fl_str_mv |
gas chromatography packed columns immobilized phases gamma radiation |
topic |
gas chromatography packed columns immobilized phases gamma radiation |
description |
Gamma radiation induced immobilization of several polydimethylsilane liquid stationary phases for use in packed-column gas chromatographic separations has been studied. Extraction tests show that moderate doses of gamma radiation (80-140 kGy) are sufficient to produce significant (90%) immobilization of most polydimethylsilanes onto Chromosorb supports, although a molecular mass effect is seen. Thermal stability also increases significantly with radiation dose, suggesting higher temperature use with smaller volatility losses. Infrared spectra confirm the continued presence of the stationary phase on the support after thermal stability tests and after exhaustive in-column washing. The column chromatographic behavior of the immobilized phases is equal to or better than that of the unirradiated phases, except for higher doses (300 kGy) of gamma-radiation. Columns prepared from gamma-immobilized polydimethylsilane have been used successfully in analyses where column contamination from high boiling materials requires frequent column recuperation. |
publishDate |
1999 |
dc.date.none.fl_str_mv |
1999-12-01 |
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=S0103-50531999000600015 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531999000600015 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50531999000600015 |
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.10 n.6 1999 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_ |
1750318163821592576 |