| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
20/09/2021 |
|
Data da última atualização: |
10/06/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MORAIS, C. P. de; NICOLODELLI, G.; FOSCHINI, M. M.; SILVA, K. S. G. da; MAUAD, F. F.; MOUNIER, S.; MILORI, D. M. B. P. |
|
Afiliação: |
MILENE CORSO MITSUYUKI, CNPDIA; DEBORA MARCONDES BASTOS PEREIRA, CNPDIA. |
|
Título: |
Total phosphorus determination in eutrophic tropical river sediments by laser-induced breakdown spectroscopy techniques. |
|
Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
Analytical Methods, v. 13, 2021. |
|
Páginas: |
77 - 83 |
|
ISSN: |
1759-9660 |
|
DOI: |
10.1039/d0ay02008g |
|
Idioma: |
Inglês |
|
Conteúdo: |
Total phosphorus (TP) in sediments is an important chemical variable in the study of the extent of eutrophication in water bodies. Two methods, based on single pulse (SP) and double pulse (DP) laserinduced breakdown spectroscopy (LIBS), were developed for determining TP in the sediment cores of Brazilian rivers upstream from the Barra Bonita reservoir. TP concentration in the sediments was determined by inductively coupled plasma optical emission spectrometry (ICP OES) on digested samples. Besides, a LIBS system operating in SP and DP modes was used to develop methods for TP quantification in sediment pellets. In LIBS, the most appropriate wavelength to measure P was 214.91 nm. The calibration curves showed correlation coefficients of 0.93 and 0.92 and limits of detection of 709 mg kg#1;1 and 349 mg kg#1;1 for SP and DP LIBS, respectively. The two proposed methods were validated and the average percentage errors were 14% and 10% for SP and DP LIBS, respectively. The ICP OES and SP and DP LIBS data showed that the most superficial layers of the Piracicaba River, all the sedimentary layers of the Tiete River, and the con ˆ fluence region present a high concentration of TP, according to the Brazilian sediment quality criterion. In conclusion, SP and DP LIBS were confirmed as promising alternative tools to traditional analytical methods for monitoring the TP content in the sediments that come from different hydrographic units. The proposed method using DP LIBS proved more sensitive than SP LIBS, but the SP LIBS method demonstrated enough precision for determining TP in eutrophic river sediments. MenosTotal phosphorus (TP) in sediments is an important chemical variable in the study of the extent of eutrophication in water bodies. Two methods, based on single pulse (SP) and double pulse (DP) laserinduced breakdown spectroscopy (LIBS), were developed for determining TP in the sediment cores of Brazilian rivers upstream from the Barra Bonita reservoir. TP concentration in the sediments was determined by inductively coupled plasma optical emission spectrometry (ICP OES) on digested samples. Besides, a LIBS system operating in SP and DP modes was used to develop methods for TP quantification in sediment pellets. In LIBS, the most appropriate wavelength to measure P was 214.91 nm. The calibration curves showed correlation coefficients of 0.93 and 0.92 and limits of detection of 709 mg kg#1;1 and 349 mg kg#1;1 for SP and DP LIBS, respectively. The two proposed methods were validated and the average percentage errors were 14% and 10% for SP and DP LIBS, respectively. The ICP OES and SP and DP LIBS data showed that the most superficial layers of the Piracicaba River, all the sedimentary layers of the Tiete River, and the con ˆ fluence region present a high concentration of TP, according to the Brazilian sediment quality criterion. In conclusion, SP and DP LIBS were confirmed as promising alternative tools to traditional analytical methods for monitoring the TP content in the sediments that come from different hydrographic units. The proposed method using DP LIBS proved more sensit... Mostrar Tudo |
|
Palavras-Chave: |
Chemical variable; Piracicaba River; SP and DP LIBS. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02401naa a2200265 a 4500
001 2134588
005 2022-06-10
008 2021 bl uuuu u00u1 u #d
022 $a1759-9660
024 7 $a10.1039/d0ay02008g$2DOI
100 1 $aMORAIS, C. P. de
245 $aTotal phosphorus determination in eutrophic tropical river sediments by laser-induced breakdown spectroscopy techniques.$h[electronic resource]
260 $c2021
300 $a77 - 83
520 $aTotal phosphorus (TP) in sediments is an important chemical variable in the study of the extent of eutrophication in water bodies. Two methods, based on single pulse (SP) and double pulse (DP) laserinduced breakdown spectroscopy (LIBS), were developed for determining TP in the sediment cores of Brazilian rivers upstream from the Barra Bonita reservoir. TP concentration in the sediments was determined by inductively coupled plasma optical emission spectrometry (ICP OES) on digested samples. Besides, a LIBS system operating in SP and DP modes was used to develop methods for TP quantification in sediment pellets. In LIBS, the most appropriate wavelength to measure P was 214.91 nm. The calibration curves showed correlation coefficients of 0.93 and 0.92 and limits of detection of 709 mg kg#1;1 and 349 mg kg#1;1 for SP and DP LIBS, respectively. The two proposed methods were validated and the average percentage errors were 14% and 10% for SP and DP LIBS, respectively. The ICP OES and SP and DP LIBS data showed that the most superficial layers of the Piracicaba River, all the sedimentary layers of the Tiete River, and the con ˆ fluence region present a high concentration of TP, according to the Brazilian sediment quality criterion. In conclusion, SP and DP LIBS were confirmed as promising alternative tools to traditional analytical methods for monitoring the TP content in the sediments that come from different hydrographic units. The proposed method using DP LIBS proved more sensitive than SP LIBS, but the SP LIBS method demonstrated enough precision for determining TP in eutrophic river sediments.
653 $aChemical variable
653 $aPiracicaba River
653 $aSP and DP LIBS
700 1 $aNICOLODELLI, G.
700 1 $aFOSCHINI, M. M.
700 1 $aSILVA, K. S. G. da
700 1 $aMAUAD, F. F.
700 1 $aMOUNIER, S.
700 1 $aMILORI, D. M. B. P.
773 $tAnalytical Methods$gv. 13, 2021.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Acre. |
|
Data corrente: |
11/06/2002 |
|
Data da última atualização: |
18/05/2023 |
|
Tipo da produção científica: |
Documentos |
|
Autoria: |
FIGUEIREDO, E. O. |
|
Afiliação: |
EVANDRO ORFANO FIGUEIREDO, CPAF-AC. |
|
Título: |
Reflorestamento com teca (Tectona grandis L. F.) no estado do Acre. |
|
Ano de publicação: |
2001 |
|
Fonte/Imprenta: |
Rio Branco, AC: Embrapa Acre, 2001. |
|
Páginas: |
28 p. |
|
Série: |
(Embrapa Acre. Documentos, 65). |
|
ISSN: |
0104-9046 |
|
Idioma: |
Português |
|
Conteúdo: |
Introdução; Aspectos ambientais; Desempenho da teca no Estado do Acre; Principais critérios para seleção de áreas; Cuidados para instalação e condução do reflorestamento; Conclusão. |
|
Palavras-Chave: |
Acre; Amazon; Amazonia Occidental; Amazônia Ocidental; Amazônia: Brasil; Brasil; Densidade do plantio; Desempenho; Desempenho silvicultural; Desempenho sivicultural; Environmental impact assessment; F; Forest; Plant population; População de plantas; Reflorestation; Reforestación; Spacing; Species; Teak; Tectona grandis L; Timber trees; Western Amazon. |
|
Thesagro: |
Árvore Angiosperma; Clima; Densidade de Plantio; Espécie; Floresta; Impacto Ambiental; Planta Produtora de Madeira; Plantio; Reflorestamento; Silvicultura; Teca; Tectona Grandis. |
|
Thesaurus NAL: |
Amazonia; Brazil; climate; deforestation; environmental impact; planting; reforestation; Tectona; trees. |
|
Categoria do assunto: |
--
K Ciência Florestal e Produtos de Origem Vegetal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/117320/1/4495.pdf
|
|
Marc: |
LEADER 01901nam a2200673 a 4500
001 1495886
005 2023-05-18
008 2001 bl uuuu u0uu1 u #d
022 $a0104-9046
100 1 $aFIGUEIREDO, E. O.
245 $aReflorestamento com teca (Tectona grandis L. F.) no estado do Acre.
260 $aRio Branco, AC: Embrapa Acre$c2001
300 $a28 p.
490 $a(Embrapa Acre. Documentos, 65).
520 $aIntrodução; Aspectos ambientais; Desempenho da teca no Estado do Acre; Principais critérios para seleção de áreas; Cuidados para instalação e condução do reflorestamento; Conclusão.
650 $aAmazonia
650 $aBrazil
650 $aclimate
650 $adeforestation
650 $aenvironmental impact
650 $aplanting
650 $areforestation
650 $aTectona
650 $atrees
650 $aÁrvore Angiosperma
650 $aClima
650 $aDensidade de Plantio
650 $aEspécie
650 $aFloresta
650 $aImpacto Ambiental
650 $aPlanta Produtora de Madeira
650 $aPlantio
650 $aReflorestamento
650 $aSilvicultura
650 $aTeca
650 $aTectona Grandis
653 $aAcre
653 $aAmazon
653 $aAmazonia Occidental
653 $aAmazônia Ocidental
653 $aAmazônia: Brasil
653 $aBrasil
653 $aDensidade do plantio
653 $aDesempenho
653 $aDesempenho silvicultural
653 $aDesempenho sivicultural
653 $aEnvironmental impact assessment
653 $aF
653 $aForest
653 $aPlant population
653 $aPopulação de plantas
653 $aReflorestation
653 $aReforestación
653 $aSpacing
653 $aSpecies
653 $aTeak
653 $aTectona grandis L
653 $aTimber trees
653 $aWestern Amazon
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Acre (CPAF-AC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
