Gravimetric determination of soil organic matter

Detalhes bibliográficos
Autor(a) principal: Miyazawa,M.
Data de Publicação: 2000
Outros Autores: Pavan,M.A., Oliveira,E.L. de, Ionashiro,M., Silva,A.K.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Brazilian Archives of Biology and Technology
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000500005
Resumo: Studies were carried out to evaluate a gravimetric method for the determination of soil organic matter by the mass loss at 300ºC. The gravimetric method was compared with Walkley-Black, using several brazilian soils with variable chemical and physical properties. Gravimetric method was positively correlated with Walkley-Black method with the following linear regression equation: y = 3.72x + 0.29, r = 0.94. The angular coefficient 3.72 for tropical soils was greater than those reported in the literature for temperate soils (from 1.68 to 2.13). The difference was due to greater oxidation degree of the organic matter. When compared with Walkley-Black method, gravimetric technique showed certain distinct advantages such as no environmental contamination with Cr6+ and improved laboratory safety eliminating the use of concentrated sulfuric acid.
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spelling Gravimetric determination of soil organic matterorganic carbonthermogravimetrysoil analysisStudies were carried out to evaluate a gravimetric method for the determination of soil organic matter by the mass loss at 300ºC. The gravimetric method was compared with Walkley-Black, using several brazilian soils with variable chemical and physical properties. Gravimetric method was positively correlated with Walkley-Black method with the following linear regression equation: y = 3.72x + 0.29, r = 0.94. The angular coefficient 3.72 for tropical soils was greater than those reported in the literature for temperate soils (from 1.68 to 2.13). The difference was due to greater oxidation degree of the organic matter. When compared with Walkley-Black method, gravimetric technique showed certain distinct advantages such as no environmental contamination with Cr6+ and improved laboratory safety eliminating the use of concentrated sulfuric acid.Instituto de Tecnologia do Paraná - Tecpar2000-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000500005Brazilian Archives of Biology and Technology v.43 n.5 2000reponame:Brazilian Archives of Biology and Technologyinstname:Instituto de Tecnologia do Paraná (Tecpar)instacron:TECPAR10.1590/S1516-89132000000500005info:eu-repo/semantics/openAccessMiyazawa,M.Pavan,M.A.Oliveira,E.L. deIonashiro,M.Silva,A.K.eng2001-10-25T00:00:00Zoai:scielo:S1516-89132000000500005Revistahttps://www.scielo.br/j/babt/https://old.scielo.br/oai/scielo-oai.phpbabt@tecpar.br||babt@tecpar.br1678-43241516-8913opendoar:2001-10-25T00:00Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)false
dc.title.none.fl_str_mv Gravimetric determination of soil organic matter
title Gravimetric determination of soil organic matter
spellingShingle Gravimetric determination of soil organic matter
Miyazawa,M.
organic carbon
thermogravimetry
soil analysis
title_short Gravimetric determination of soil organic matter
title_full Gravimetric determination of soil organic matter
title_fullStr Gravimetric determination of soil organic matter
title_full_unstemmed Gravimetric determination of soil organic matter
title_sort Gravimetric determination of soil organic matter
author Miyazawa,M.
author_facet Miyazawa,M.
Pavan,M.A.
Oliveira,E.L. de
Ionashiro,M.
Silva,A.K.
author_role author
author2 Pavan,M.A.
Oliveira,E.L. de
Ionashiro,M.
Silva,A.K.
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Miyazawa,M.
Pavan,M.A.
Oliveira,E.L. de
Ionashiro,M.
Silva,A.K.
dc.subject.por.fl_str_mv organic carbon
thermogravimetry
soil analysis
topic organic carbon
thermogravimetry
soil analysis
description Studies were carried out to evaluate a gravimetric method for the determination of soil organic matter by the mass loss at 300ºC. The gravimetric method was compared with Walkley-Black, using several brazilian soils with variable chemical and physical properties. Gravimetric method was positively correlated with Walkley-Black method with the following linear regression equation: y = 3.72x + 0.29, r = 0.94. The angular coefficient 3.72 for tropical soils was greater than those reported in the literature for temperate soils (from 1.68 to 2.13). The difference was due to greater oxidation degree of the organic matter. When compared with Walkley-Black method, gravimetric technique showed certain distinct advantages such as no environmental contamination with Cr6+ and improved laboratory safety eliminating the use of concentrated sulfuric acid.
publishDate 2000
dc.date.none.fl_str_mv 2000-01-01
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=S1516-89132000000500005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000500005
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-89132000000500005
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 Instituto de Tecnologia do Paraná - Tecpar
publisher.none.fl_str_mv Instituto de Tecnologia do Paraná - Tecpar
dc.source.none.fl_str_mv Brazilian Archives of Biology and Technology v.43 n.5 2000
reponame:Brazilian Archives of Biology and Technology
instname:Instituto de Tecnologia do Paraná (Tecpar)
instacron:TECPAR
instname_str Instituto de Tecnologia do Paraná (Tecpar)
instacron_str TECPAR
institution TECPAR
reponame_str Brazilian Archives of Biology and Technology
collection Brazilian Archives of Biology and Technology
repository.name.fl_str_mv Brazilian Archives of Biology and Technology - Instituto de Tecnologia do Paraná (Tecpar)
repository.mail.fl_str_mv babt@tecpar.br||babt@tecpar.br
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