Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
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=S0103-50532012000300016 |
Resumo: | Pyrohydrolysis was employed for mineral supplements decomposition prior to F, Br and I determination. Fluoride determination was carried out by potentiometry using a fluoride-ion selective electrode, whereas Br and I were determined by inductively coupled plasma mass spectrometry. The main parameters that influence on pyrohydrolysis were investigated. After evaluation, the following conditions were established: reactor temperature of 1000 ºC during 10 min; sample plus accelerator mass ratio of 1 + 5 and carrier gas (air) flow rate of 200 mL min-1. The accuracy of the proposed method was evaluated by analyte recovery tests and analysis of certified reference materials of phosphate rock and soil. Commercial mineral supplement samples were analyzed. The limits of quantification were 16, 0.3 and 0.07 µg g-1 for F, Br and I, respectively. By using a relatively simple and low cost pyrohydrolysis system up to 5 samples can be processed per hour. The developed sample preparation procedure can be routinely employed for F, Br and I determination in mineral supplements. |
id |
SBQ-2_ec7667a3896253182176fb0ec742ffad |
---|---|
oai_identifier_str |
oai:scielo:S0103-50532012000300016 |
network_acronym_str |
SBQ-2 |
network_name_str |
Journal of the Brazilian Chemical Society (Online) |
repository_id_str |
|
spelling |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparationpyrohydrolysishalogens determinationmineral supplementPyrohydrolysis was employed for mineral supplements decomposition prior to F, Br and I determination. Fluoride determination was carried out by potentiometry using a fluoride-ion selective electrode, whereas Br and I were determined by inductively coupled plasma mass spectrometry. The main parameters that influence on pyrohydrolysis were investigated. After evaluation, the following conditions were established: reactor temperature of 1000 ºC during 10 min; sample plus accelerator mass ratio of 1 + 5 and carrier gas (air) flow rate of 200 mL min-1. The accuracy of the proposed method was evaluated by analyte recovery tests and analysis of certified reference materials of phosphate rock and soil. Commercial mineral supplement samples were analyzed. The limits of quantification were 16, 0.3 and 0.07 µg g-1 for F, Br and I, respectively. By using a relatively simple and low cost pyrohydrolysis system up to 5 samples can be processed per hour. The developed sample preparation procedure can be routinely employed for F, Br and I determination in mineral supplements.Sociedade Brasileira de Química2012-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000300016Journal of the Brazilian Chemical Society v.23 n.3 2012reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532012000300016info:eu-repo/semantics/openAccessTaflik,TicianeDuarte,Fábio A.Flores,Éder L. M.Antes,Fabiane G.Paniz,José N. G.Flores,Érico M. M.Dressler,Valderi L.eng2012-04-04T00:00:00Zoai:scielo:S0103-50532012000300016Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2012-04-04T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
title |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
spellingShingle |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation Taflik,Ticiane pyrohydrolysis halogens determination mineral supplement |
title_short |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
title_full |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
title_fullStr |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
title_full_unstemmed |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
title_sort |
Determination of bromine, fluorine and iodine in mineral supplements using pyrohydrolysis for sample preparation |
author |
Taflik,Ticiane |
author_facet |
Taflik,Ticiane Duarte,Fábio A. Flores,Éder L. M. Antes,Fabiane G. Paniz,José N. G. Flores,Érico M. M. Dressler,Valderi L. |
author_role |
author |
author2 |
Duarte,Fábio A. Flores,Éder L. M. Antes,Fabiane G. Paniz,José N. G. Flores,Érico M. M. Dressler,Valderi L. |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Taflik,Ticiane Duarte,Fábio A. Flores,Éder L. M. Antes,Fabiane G. Paniz,José N. G. Flores,Érico M. M. Dressler,Valderi L. |
dc.subject.por.fl_str_mv |
pyrohydrolysis halogens determination mineral supplement |
topic |
pyrohydrolysis halogens determination mineral supplement |
description |
Pyrohydrolysis was employed for mineral supplements decomposition prior to F, Br and I determination. Fluoride determination was carried out by potentiometry using a fluoride-ion selective electrode, whereas Br and I were determined by inductively coupled plasma mass spectrometry. The main parameters that influence on pyrohydrolysis were investigated. After evaluation, the following conditions were established: reactor temperature of 1000 ºC during 10 min; sample plus accelerator mass ratio of 1 + 5 and carrier gas (air) flow rate of 200 mL min-1. The accuracy of the proposed method was evaluated by analyte recovery tests and analysis of certified reference materials of phosphate rock and soil. Commercial mineral supplement samples were analyzed. The limits of quantification were 16, 0.3 and 0.07 µg g-1 for F, Br and I, respectively. By using a relatively simple and low cost pyrohydrolysis system up to 5 samples can be processed per hour. The developed sample preparation procedure can be routinely employed for F, Br and I determination in mineral supplements. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-03-01 |
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=S0103-50532012000300016 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000300016 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532012000300016 |
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.23 n.3 2012 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_ |
1750318173124558848 |