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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
16/02/2022 |
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Data da última atualização: |
17/02/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORAIS, P. A. de O.; SOUZA, D. M. de; MADARI, B. E. |
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Afiliação: |
PEDRO AUGUSTO DE OLIVEIRA MORAIS, UFG; DIEGO MENDES DE SOUZA, Polícia Civil, Distrito Federal, DF; BEATA EMOKE MADARI, CNPAF. |
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Título: |
Multivariate analysis of images in spectrophotometric methods: quantification of soil organic matter. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
European Journal of Chemistry, v. 12, n. 4, p. 377-381, Dec. 2021. |
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ISSN: |
2153-2257 |
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DOI: |
10.5155/eurjchem.12.4.377-381.2122 |
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Idioma: |
Inglês |
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Conteúdo: |
Soil organic matter (SOM) is usually quantified by Walkley-Black titration method or using a spectrophotometric method. This study proposes an alternative method for quantification of SOM using digital image from scanner and mathematical algorithms to replace titration and spectrophotometry procedures. For this, after SOM oxidation by potassium dichromate, digital images were acquired. Posteriorly, extraction of RGB color histograms from images have occurred, followed by the use of multivariate calibration method: partial least squares (PLS). Six soil samples were analyzed. We used the Walkley-Black method as reference. SOM was estimated by images using the PLS tool. The new method, besides being a fast, low cost, and more operational alternative, presented statistically equal results in relation to the reference method, as assessed by the Student t-test and F-test at 95 % confidence. |
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Palavras-Chave: |
Partial least squares; Walkley-Black method. |
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Thesagro: |
Espectrometria; Matéria Orgânica; Solo. |
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Thesaurus Nal: |
Digital images; Scanners; Soil organic matter; Spectrophotometers. |
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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/231349/1/ejc-2021.pdf
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Marc: |
LEADER 01750naa a2200277 a 4500
001 2140128
005 2022-02-17
008 2021 bl uuuu u00u1 u #d
022 $a2153-2257
024 7 $a10.5155/eurjchem.12.4.377-381.2122$2DOI
100 1 $aMORAIS, P. A. de O.
245 $aMultivariate analysis of images in spectrophotometric methods$bquantification of soil organic matter.$h[electronic resource]
260 $c2021
520 $aSoil organic matter (SOM) is usually quantified by Walkley-Black titration method or using a spectrophotometric method. This study proposes an alternative method for quantification of SOM using digital image from scanner and mathematical algorithms to replace titration and spectrophotometry procedures. For this, after SOM oxidation by potassium dichromate, digital images were acquired. Posteriorly, extraction of RGB color histograms from images have occurred, followed by the use of multivariate calibration method: partial least squares (PLS). Six soil samples were analyzed. We used the Walkley-Black method as reference. SOM was estimated by images using the PLS tool. The new method, besides being a fast, low cost, and more operational alternative, presented statistically equal results in relation to the reference method, as assessed by the Student t-test and F-test at 95 % confidence.
650 $aDigital images
650 $aScanners
650 $aSoil organic matter
650 $aSpectrophotometers
650 $aEspectrometria
650 $aMatéria Orgânica
650 $aSolo
653 $aPartial least squares
653 $aWalkley-Black method
700 1 $aSOUZA, D. M. de
700 1 $aMADARI, B. E.
773 $tEuropean Journal of Chemistry$gv. 12, n. 4, p. 377-381, Dec. 2021.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 65 | |
| 13. |  | MORAIS, P. A. de O.; SOUZA, D. M. de; MADARI, B. E.; OLIVEIRA, A. E. de. Quantificação da textura do solo por meio da análise multivariada de imagens. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 19., CONGRESSO IBEROAMERICANO DE QUÍMICA ANALÍTICA, 7., 2018, Caldas Novas, GO. Livro de resumos. São Paulo: Metrohm, 2018. p. 1100.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 65 | |
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