Development of Alternative Methods for Determining Soil Organic Matter
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Ciência do Solo (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100419 |
Resumo: | ABSTRACT Soil organic matter (SOM) is important to fertility, since it performs several functions such as cycling, water and nutrient retention and soil aggregation, in addition to being an energy requirement for biological activity. This study proposes new trends to the Embrapa, Walkley-Black, and Mebius methods that allowed the determination of SOM by spectrophotometry, increasing functionality. The mass of 500 mg was reduced to 200 mg, generating a mean of 60 % saving of reagents and a decrease of 91 % in the volume of residue generated for the three methods without compromising accuracy and precision. We were able to optimize conditions for the Mebius method and establish the digestion time of maximum recovery of SOM by factorial design and response surface. The methods were validated by the estimate of figures of merits. Between the methods investigated, the optimized Mebius method was best suited for determining SOM, showing near 100 % recovery. |
id |
SBCS-1_45f5d926e1fef80859460d0c227a8edd |
---|---|
oai_identifier_str |
oai:scielo:S0100-06832016000100419 |
network_acronym_str |
SBCS-1 |
network_name_str |
Revista Brasileira de Ciência do Solo (Online) |
repository_id_str |
|
spelling |
Development of Alternative Methods for Determining Soil Organic MatterSOMspectrophotometryincrease in functionalityresponse surfaceABSTRACT Soil organic matter (SOM) is important to fertility, since it performs several functions such as cycling, water and nutrient retention and soil aggregation, in addition to being an energy requirement for biological activity. This study proposes new trends to the Embrapa, Walkley-Black, and Mebius methods that allowed the determination of SOM by spectrophotometry, increasing functionality. The mass of 500 mg was reduced to 200 mg, generating a mean of 60 % saving of reagents and a decrease of 91 % in the volume of residue generated for the three methods without compromising accuracy and precision. We were able to optimize conditions for the Mebius method and establish the digestion time of maximum recovery of SOM by factorial design and response surface. The methods were validated by the estimate of figures of merits. Between the methods investigated, the optimized Mebius method was best suited for determining SOM, showing near 100 % recovery.Sociedade Brasileira de Ciência do Solo2016-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100419Revista Brasileira de Ciência do Solo v.40 2016reponame:Revista Brasileira de Ciência do Solo (Online)instname:Sociedade Brasileira de Ciência do Solo (SBCS)instacron:SBCS10.1590/18069657rbcs20150150info:eu-repo/semantics/openAccessSouza,Diego Mendes deMorais,Pedro Augusto de OliveiraMatsushige,IvãRosa,Luismar Alveseng2016-08-24T00:00:00Zoai:scielo:S0100-06832016000100419Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=0100-0683&lng=es&nrm=isohttps://old.scielo.br/oai/scielo-oai.php||sbcs@ufv.br1806-96570100-0683opendoar:2016-08-24T00:00Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS)false |
dc.title.none.fl_str_mv |
Development of Alternative Methods for Determining Soil Organic Matter |
title |
Development of Alternative Methods for Determining Soil Organic Matter |
spellingShingle |
Development of Alternative Methods for Determining Soil Organic Matter Souza,Diego Mendes de SOM spectrophotometry increase in functionality response surface |
title_short |
Development of Alternative Methods for Determining Soil Organic Matter |
title_full |
Development of Alternative Methods for Determining Soil Organic Matter |
title_fullStr |
Development of Alternative Methods for Determining Soil Organic Matter |
title_full_unstemmed |
Development of Alternative Methods for Determining Soil Organic Matter |
title_sort |
Development of Alternative Methods for Determining Soil Organic Matter |
author |
Souza,Diego Mendes de |
author_facet |
Souza,Diego Mendes de Morais,Pedro Augusto de Oliveira Matsushige,Ivã Rosa,Luismar Alves |
author_role |
author |
author2 |
Morais,Pedro Augusto de Oliveira Matsushige,Ivã Rosa,Luismar Alves |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Souza,Diego Mendes de Morais,Pedro Augusto de Oliveira Matsushige,Ivã Rosa,Luismar Alves |
dc.subject.por.fl_str_mv |
SOM spectrophotometry increase in functionality response surface |
topic |
SOM spectrophotometry increase in functionality response surface |
description |
ABSTRACT Soil organic matter (SOM) is important to fertility, since it performs several functions such as cycling, water and nutrient retention and soil aggregation, in addition to being an energy requirement for biological activity. This study proposes new trends to the Embrapa, Walkley-Black, and Mebius methods that allowed the determination of SOM by spectrophotometry, increasing functionality. The mass of 500 mg was reduced to 200 mg, generating a mean of 60 % saving of reagents and a decrease of 91 % in the volume of residue generated for the three methods without compromising accuracy and precision. We were able to optimize conditions for the Mebius method and establish the digestion time of maximum recovery of SOM by factorial design and response surface. The methods were validated by the estimate of figures of merits. Between the methods investigated, the optimized Mebius method was best suited for determining SOM, showing near 100 % recovery. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 |
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=S0100-06832016000100419 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100419 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/18069657rbcs20150150 |
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 Ciência do Solo |
publisher.none.fl_str_mv |
Sociedade Brasileira de Ciência do Solo |
dc.source.none.fl_str_mv |
Revista Brasileira de Ciência do Solo v.40 2016 reponame:Revista Brasileira de Ciência do Solo (Online) instname:Sociedade Brasileira de Ciência do Solo (SBCS) instacron:SBCS |
instname_str |
Sociedade Brasileira de Ciência do Solo (SBCS) |
instacron_str |
SBCS |
institution |
SBCS |
reponame_str |
Revista Brasileira de Ciência do Solo (Online) |
collection |
Revista Brasileira de Ciência do Solo (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Ciência do Solo (Online) - Sociedade Brasileira de Ciência do Solo (SBCS) |
repository.mail.fl_str_mv |
||sbcs@ufv.br |
_version_ |
1752126520893112320 |