Analysis of laboratory intercomparison data: a matter of independence

Detalhes bibliográficos
Autor(a) principal: Rebelo, Mauro Freitas
Data de Publicação: 2003
Outros Autores: Monserrat, José María, Bastos, Wanderley Rodrigues
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da FURG (RI FURG)
Texto Completo: http://repositorio.furg.br/handle/1/1286
Resumo: When laboratory intercomparison exercises are conducted, there is no a priori dependence of the concentration of a certain compound determined in one laboratory to that determined by another(s). The same applies when comparing different methodologies. A existing data set of total mercury readings in fish muscle samples involved in a Brazilian intercomparison exercise was used to show that correlation analysis is the most effective statistical tool in this kind of experiments. Problems associated with alternative analytical tools such as mean or paired ‘t’-test comparison and regression analysis are discussed.
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spelling Rebelo, Mauro FreitasMonserrat, José MaríaBastos, Wanderley Rodrigues2011-11-02T22:48:53Z2011-11-02T22:48:53Z2003REBELO, Mauro Freitas; MONSERRAT, José Maria; BASTOS, Wanderley Rodrigues. Analysis of laboratory intercomparison data: a matter of independence. Química Nova, v. 26, n. 3, p. 417-419, 2003. Disponível em:<http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422003000300020>. Acesso em: 22 ago. 2011.0100-4042http://repositorio.furg.br/handle/1/1286When laboratory intercomparison exercises are conducted, there is no a priori dependence of the concentration of a certain compound determined in one laboratory to that determined by another(s). The same applies when comparing different methodologies. A existing data set of total mercury readings in fish muscle samples involved in a Brazilian intercomparison exercise was used to show that correlation analysis is the most effective statistical tool in this kind of experiments. Problems associated with alternative analytical tools such as mean or paired ‘t’-test comparison and regression analysis are discussed.engLaboratory intercomparisonMercuryFishAnalysis of laboratory intercomparison data: a matter of independenceinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da FURG (RI FURG)instname:Universidade Federal do Rio Grande (FURG)instacron:FURGORIGINALAnalysis of laboratory intercomparison data a matter of independence.pdfAnalysis of laboratory intercomparison data a matter of independence.pdfapplication/pdf178564https://repositorio.furg.br/bitstream/1/1286/1/Analysis%20of%20laboratory%20intercomparison%20data%20a%20matter%20of%20independence.pdf37b8665c51e99ec89ee7d13be2ba47fcMD51open accessLICENSElicense.txtlicense.txttext/plain; charset=utf-81724https://repositorio.furg.br/bitstream/1/1286/2/license.txt5b92b9704b4f13242d70e45ddef35a68MD52open access1/12862011-11-02 20:48:53.473open accessoai:repositorio.furg.br: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Repositório InstitucionalPUBhttps://repositorio.furg.br/oai/request || http://200.19.254.174/oai/requestopendoar:2011-11-02T22:48:53Repositório Institucional da FURG (RI FURG) - Universidade Federal do Rio Grande (FURG)false
dc.title.pt_BR.fl_str_mv Analysis of laboratory intercomparison data: a matter of independence
title Analysis of laboratory intercomparison data: a matter of independence
spellingShingle Analysis of laboratory intercomparison data: a matter of independence
Rebelo, Mauro Freitas
Laboratory intercomparison
Mercury
Fish
title_short Analysis of laboratory intercomparison data: a matter of independence
title_full Analysis of laboratory intercomparison data: a matter of independence
title_fullStr Analysis of laboratory intercomparison data: a matter of independence
title_full_unstemmed Analysis of laboratory intercomparison data: a matter of independence
title_sort Analysis of laboratory intercomparison data: a matter of independence
author Rebelo, Mauro Freitas
author_facet Rebelo, Mauro Freitas
Monserrat, José María
Bastos, Wanderley Rodrigues
author_role author
author2 Monserrat, José María
Bastos, Wanderley Rodrigues
author2_role author
author
dc.contributor.author.fl_str_mv Rebelo, Mauro Freitas
Monserrat, José María
Bastos, Wanderley Rodrigues
dc.subject.por.fl_str_mv Laboratory intercomparison
Mercury
Fish
topic Laboratory intercomparison
Mercury
Fish
description When laboratory intercomparison exercises are conducted, there is no a priori dependence of the concentration of a certain compound determined in one laboratory to that determined by another(s). The same applies when comparing different methodologies. A existing data set of total mercury readings in fish muscle samples involved in a Brazilian intercomparison exercise was used to show that correlation analysis is the most effective statistical tool in this kind of experiments. Problems associated with alternative analytical tools such as mean or paired ‘t’-test comparison and regression analysis are discussed.
publishDate 2003
dc.date.issued.fl_str_mv 2003
dc.date.accessioned.fl_str_mv 2011-11-02T22:48:53Z
dc.date.available.fl_str_mv 2011-11-02T22:48:53Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.citation.fl_str_mv REBELO, Mauro Freitas; MONSERRAT, José Maria; BASTOS, Wanderley Rodrigues. Analysis of laboratory intercomparison data: a matter of independence. Química Nova, v. 26, n. 3, p. 417-419, 2003. Disponível em:<http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422003000300020>. Acesso em: 22 ago. 2011.
dc.identifier.uri.fl_str_mv http://repositorio.furg.br/handle/1/1286
dc.identifier.issn.none.fl_str_mv 0100-4042
identifier_str_mv REBELO, Mauro Freitas; MONSERRAT, José Maria; BASTOS, Wanderley Rodrigues. Analysis of laboratory intercomparison data: a matter of independence. Química Nova, v. 26, n. 3, p. 417-419, 2003. Disponível em:<http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422003000300020>. Acesso em: 22 ago. 2011.
0100-4042
url http://repositorio.furg.br/handle/1/1286
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:Repositório Institucional da FURG (RI FURG)
instname:Universidade Federal do Rio Grande (FURG)
instacron:FURG
instname_str Universidade Federal do Rio Grande (FURG)
instacron_str FURG
institution FURG
reponame_str Repositório Institucional da FURG (RI FURG)
collection Repositório Institucional da FURG (RI FURG)
bitstream.url.fl_str_mv https://repositorio.furg.br/bitstream/1/1286/1/Analysis%20of%20laboratory%20intercomparison%20data%20a%20matter%20of%20independence.pdf
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