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| Registros recuperados : 30 | |
| 3. |  | BARRETO, A.; MENDES, W. A concorrência da microflora e microfauna do solo na alimentação vegetal, controlada pelo pentaclorofanato de sódio. Boletim dos Cursos de Aperfeiçoamento e Especialização, Rio de Janeiro, n. 5, p. 1-25, 1949. Boletim dos Cursos de Aperfeiçoamento, Especialização e Extensão, Ministério da Agricultura, Centro Nacional de Ensino e Pesquisas Agronômicas, Rio de Janeiro, n.1-6, 1943/1949, encadernado.| Biblioteca(s): Embrapa Solos. |
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| 14. | | BRITO, D. P. P. de S.; CASTRO, A. F. de; MENDES, W.; JACCOUD, A.; RAMOS, D. P.; COSTA, F. A. Estudo das reacoes a micronutrientes em latossolos vermelho-escuro sob vegetacao de cerrado. Pesquisa Agropecuaria Brasileira, Serie Agronomia, v.6, p.17-22, 1971.| Biblioteca(s): Embrapa Cerrados. |
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| 15. | | BRITO, D. P. P. de S.; CASTRO, A. F. de; MENDES, W.; JACCOUD, A.; RAMOS, D. P.; COSTA, F. A. Estudo das reações a micronutrientes em latossolo vermelho-escuro sob vegetação de cerrado. Pesquisa Agropecuária Brasileira, Rio de Janeiro, v. 6, p. 17-22, 1971. (Agronomia, 4). Título em inglês: A Plant nutrient study on a dark red latosol under Cerrado vegetation.
A partir do v. 3 (1968) é constituída de duas partes: Série Agronomia e Série Veterinária, publicadas também separadamente.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 17. | | MENDES, W.; LEMOS, P. de O. e C.; LEMOS, R. C.; CARVALHO, L. G. de O.; ROSENBURG, R. J. Contribuição ao mapeamento, em séries, dos solos do município de Itaguaí. Rio de Janeiro: Centro Nacional de Ensino e Pesquisas Agronômicas, 1954. 53 p. (Boletim do Instituto de Ecologia e Experimentação Agrícolas, 12). Comissão de publicação de trabalhos técnicos: Alfredo Cesar do Nascimento, Petezval de Oliveira e Cruz Lemos, Abeilard Fernando de Castro.| Biblioteca(s): Embrapa Solos. |
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| 18. | | MENDES, W.; LEMOS, P. DE O. C.; LEMOS, R. C.; CARVALHO, L. G. DE O.; ROSENBURG, R. J. Contribuicao ao mapeamento, em series, dos solos do municipio de Itaguai. Bol. IEEA, v., n.12, p.5-53, 1954.| Biblioteca(s): Embrapa Agrobiologia. |
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| 19. | | GOMES, L. A. A.; MENDES, W. P.; MALUF, W. R.; AZEVEDO, S. M.; FREITAS, J. A.; MORETTO, P. Resistencia de cultivares de alface a infeccao por Meloidogyne incognita (racas 1, 2 e 3). Horticultura Brasileira, Brasilia, v.14, n.1, p.87, maio 1996. Resumo.| Biblioteca(s): Embrapa Hortaliças. |
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| 20. | | MENDES, W. P.; GOMES, L. A. A.; MALUF, W. R.; AZEVEDO, S. M.; FREITAS, J. A.; LICURSI, V. Resistencia de cultivares de alface a infeccao por Meloidogyne javanica. Horticultura Brasileira, Brasilia, v.14, n.1, p.99, maio 1996. Resumo.| Biblioteca(s): Embrapa Hortaliças. |
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| Registros recuperados : 30 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
05/05/2022 |
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Data da última atualização: |
05/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MAIA, A. J.; NASCIMENTO, R. C.; SILVA, Y. J. A. B. da; NASCIMENTO, C. W. A. do; MENDES, W. de S.; VERAS NETO, J. G.; ARAUJO FILHO, J. C. de; TIECHER, T.; SILVA, Y. J. A. B. da. |
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Afiliação: |
ANGELO JAMIL MAIA, UFRPE; RENNAN CABRAL NASCIMENTO, UFRPE; YGOR JACQUES AGRA BEZERRA DA SILVA, UFRPE; CLÍSTENES WILLIAMS ARAÚJO DO NASCIMENTO, UFRPE; WANDERSON DE SOUSA MENDES, LEIBNIZ CENTRE FOR AGRICULTURAL LANDSCAPE RESEARCH (ZALF); JOSÉ GERMANO VERAS NETO, UFPB; JOSE COELHO DE ARAUJO FILHO, CNPS; TALES TIECHER, UFRGS; YURI JACQUES AGRA BEZERRA DA SILVA, UFPI. |
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Título: |
Near-infrared spectroscopy for prediction of potentially toxic elements in soil and sediments from a semiarid and coastal humid tropical transitional river basin. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Microchemical Journal, v. 179, 107544, Aug. 2022. |
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DOI: |
https://doi.org/10.1016/j.microc.2022.107544 |
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Idioma: |
Inglês |
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Conteúdo: |
The input of potentially toxic elements (PTE) in river basins is a major environmental problem. PTE concentrations are determined using traditional analytical methods, which are mostly time consuming, expensive, and reliant on hazardous reagents. An alternative method to traditional chemical analysis is near-infrared (NIR) spectroscopy, which allows for the quantification of several PTEs through chemometric models. The aim of this study is to apply NIR spectroscopy for the prediction of PTE concentrations in the Ipojuca river basin, an area exposed to potential pollutant activities. We collected 145 soil samples and 33 bed sediments samples. All samples were ground and sieved at <- 100-um, and then analyzed for Al, Ce, Co, Cr, Fe, La, Mn, Mo, Ni, Pr, Sc, Sm, Sn, Sr, Th, Ti, V, and Y concentrations by inductively coupled plasma optical emission spectroscopy. Spectral data were retrieved from all samples using an FT-IR/NIR spectrometer in the range of 1000 - 2500 nm. The samples were subdivided into two sets: (i) soil and (ii) soil and bed sediments. Prediction models were built using the random forest algorithm (RF) and partial least squares regression (PLS) combined with different spectral preprocessing methods. Satisfactory results were obtained for Al, Ti, Sc, and V, and reasonable results for Fe, La, Mn, Pr, Sm, Sr, and Th. Our findings indicate that RF models obtains generally better results than PLS, and also that NIR spectroscopy can be a viable alternative assessment tool even in large areas with geochemical and pedological heterogeneity. MenosThe input of potentially toxic elements (PTE) in river basins is a major environmental problem. PTE concentrations are determined using traditional analytical methods, which are mostly time consuming, expensive, and reliant on hazardous reagents. An alternative method to traditional chemical analysis is near-infrared (NIR) spectroscopy, which allows for the quantification of several PTEs through chemometric models. The aim of this study is to apply NIR spectroscopy for the prediction of PTE concentrations in the Ipojuca river basin, an area exposed to potential pollutant activities. We collected 145 soil samples and 33 bed sediments samples. All samples were ground and sieved at <- 100-um, and then analyzed for Al, Ce, Co, Cr, Fe, La, Mn, Mo, Ni, Pr, Sc, Sm, Sn, Sr, Th, Ti, V, and Y concentrations by inductively coupled plasma optical emission spectroscopy. Spectral data were retrieved from all samples using an FT-IR/NIR spectrometer in the range of 1000 - 2500 nm. The samples were subdivided into two sets: (i) soil and (ii) soil and bed sediments. Prediction models were built using the random forest algorithm (RF) and partial least squares regression (PLS) combined with different spectral preprocessing methods. Satisfactory results were obtained for Al, Ti, Sc, and V, and reasonable results for Fe, La, Mn, Pr, Sm, Sr, and Th. Our findings indicate that RF models obtains generally better results than PLS, and also that NIR spectroscopy can be a viable alternative assessment ... Mostrar Tudo |
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Palavras-Chave: |
Aprendizado de máquina; Contamination; Espectroscopia; Gestão de recursos hídricos; Hydrological monitoring; Infravermelho; Machine learning; Monitoramento hidrológico; Soil sensing; Water resources management. |
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Thesagro: |
Contaminação. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02775naa a2200361 a 4500
001 2142678
005 2022-05-05
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.microc.2022.107544$2DOI
100 1 $aMAIA, A. J.
245 $aNear-infrared spectroscopy for prediction of potentially toxic elements in soil and sediments from a semiarid and coastal humid tropical transitional river basin.$h[electronic resource]
260 $c2022
520 $aThe input of potentially toxic elements (PTE) in river basins is a major environmental problem. PTE concentrations are determined using traditional analytical methods, which are mostly time consuming, expensive, and reliant on hazardous reagents. An alternative method to traditional chemical analysis is near-infrared (NIR) spectroscopy, which allows for the quantification of several PTEs through chemometric models. The aim of this study is to apply NIR spectroscopy for the prediction of PTE concentrations in the Ipojuca river basin, an area exposed to potential pollutant activities. We collected 145 soil samples and 33 bed sediments samples. All samples were ground and sieved at <- 100-um, and then analyzed for Al, Ce, Co, Cr, Fe, La, Mn, Mo, Ni, Pr, Sc, Sm, Sn, Sr, Th, Ti, V, and Y concentrations by inductively coupled plasma optical emission spectroscopy. Spectral data were retrieved from all samples using an FT-IR/NIR spectrometer in the range of 1000 - 2500 nm. The samples were subdivided into two sets: (i) soil and (ii) soil and bed sediments. Prediction models were built using the random forest algorithm (RF) and partial least squares regression (PLS) combined with different spectral preprocessing methods. Satisfactory results were obtained for Al, Ti, Sc, and V, and reasonable results for Fe, La, Mn, Pr, Sm, Sr, and Th. Our findings indicate that RF models obtains generally better results than PLS, and also that NIR spectroscopy can be a viable alternative assessment tool even in large areas with geochemical and pedological heterogeneity.
650 $aContaminação
653 $aAprendizado de máquina
653 $aContamination
653 $aEspectroscopia
653 $aGestão de recursos hídricos
653 $aHydrological monitoring
653 $aInfravermelho
653 $aMachine learning
653 $aMonitoramento hidrológico
653 $aSoil sensing
653 $aWater resources management
700 1 $aNASCIMENTO, R. C.
700 1 $aSILVA, Y. J. A. B. da
700 1 $aNASCIMENTO, C. W. A. do
700 1 $aMENDES, W. de S.
700 1 $aVERAS NETO, J. G.
700 1 $aARAUJO FILHO, J. C. de
700 1 $aTIECHER, T.
700 1 $aSILVA, Y. J. A. B. da
773 $tMicrochemical Journal$gv. 179, 107544, Aug. 2022.
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