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| 5. |  | ROSA, L. A.; MEDEIROS, D. S.; MORAIS, P. A. de O.; SOUZA, D. M. de; MATSUSHIGE, I. Uma alternativa espectrofotométrica para o método de Walkley-Black. In: SEMINÁRIO JOVENS TALENTOS, 9., 2015, Santo Antônio de Goiás. Coletânea dos resumos apresentados. Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2015. p. 68. (Embrapa Arroz e Feijão. Documentos, 309).| Biblioteca(s): Embrapa Arroz e Feijão. |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
15/09/2016 |
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Data da última atualização: |
16/09/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SOUZA, D. M. de; MORAIS, P. A. de O.; MATSUSHIGE, I.; ROSA, L. A. |
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Afiliação: |
DIEGO MENDES DE SOUZA, CNPAF; PEDRO AUGUSTO DE OLIVEIRA MORAIS, UNIVERSIDADE FEDERAL DE GOIÁS; IVA MATSUSHIGE, CNPAF; LUISMAR ALVES ROSA, INSTITUTO FEDERAL DE GOIÁS. |
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Título: |
Development of alternative methods for determining soil organic matter. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 40, e0150150, 2016. |
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DOI: |
10.1590/18069657rbcs20150150 |
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Idioma: |
Inglês |
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Conteúdo: |
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. |
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Thesagro: |
Análise química; Espectrometria; Matéria orgânica; Solo. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/147411/1/CNPAF-2016-rbcs.pdf
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Marc: |
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001 2052941
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008 2016 bl uuuu u00u1 u #d
024 7 $a10.1590/18069657rbcs20150150$2DOI
100 1 $aSOUZA, D. M. de
245 $aDevelopment of alternative methods for determining soil organic matter.$h[electronic resource]
260 $c2016
520 $aSoil 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.
650 $aAnálise química
650 $aEspectrometria
650 $aMatéria orgânica
650 $aSolo
700 1 $aMORAIS, P. A. de O.
700 1 $aMATSUSHIGE, I.
700 1 $aROSA, L. A.
773 $tRevista Brasileira de Ciência do Solo, Viçosa, MG$gv. 40, e0150150, 2016.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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