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8. | | MACHADO, R. C.; AMARAL, C. D. B. do; NOBREGA, J. de A.; NOGUEIRA, A. R. de A. Multielemental determination of As, Bi, Ge, Sb, and Sn in agricultural samples using hydride generation coupled to microwave-induced plasma optical emission spectrometry. Journal of Agricultural and Food Chemistry, v. 65, n. 23, p. 4839-4842, 2017. Biblioteca(s): Embrapa Pecuária Sudeste. |
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12. | | BOSSU, C. M.; CAZO, N. A.; SOUZA, G. B. de; BARIONI JUNIOR, W.; NOBREGA, J. de A.; NOGUEIRA, A. R. de A. Estudo da estabilidade à curto prazo da forrageira Brachiaria brizantha como um candidato a material de referência. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 4., 2012, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2012. p. 104. (Embrapa Instrumentação. Documentos, 56). Biblioteca(s): Embrapa Pecuária Sudeste. |
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13. | | RIBEIRO, S. A. O.; SILVA, C. S.; FIALHO, L. L.; NOGUEIRA, A. R. de A.; NÓBREGA, J. de A.; GARCIA, E. E. Estudo do fracionamento de elementos potencialmente tóxicos em infusões de erva-mate verde e tostada. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 19., 2018, Caldas Novas, GO; CONGRESSO IBEROAMERICANO DE QUÍMICA ANALÍTICA, 7., Caldas Novas, GO. Anais... Caldas Novas,GO: ENQA; CIAQA, 2018. p.304. Biblioteca(s): Embrapa Pecuária Sudeste. |
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14. | | AMARAL, C. D. B. do; MACHADO, R. C.; VIRGILIO, A.; SCHIAVO, D.; NOGUEIRA, A. R. de A.; NOBREGA, J. de A. Critical evaluation of internal standardization in ICP tandem mass spectrometry and feasibility of the oxygen reaction for boron determination in plants. In: Journal of Analytical Atomic Spectrometry, v.31, issue 6, p. 1179-1184, 2016 Biblioteca(s): Embrapa Pecuária Sudeste. |
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15. | | NOGUEIRA, A. R. de A.; MORAES, D. P.; FLORES, E. M. de M.; KRUG, F. J.; KNAPP, G.; NÓBREGA, J. de A.; BARIN, J. S.; MESKO, M. F. Decomposições assistidas por radiação microondas. In: KRUG, F. J. (Ed.). Métodos de preparo de amostras: fundamentos sobre preparo de amostras orgânicas e inorgânicas para análise elementar. Piracicaba, 2008. p. 276-325. Biblioteca(s): Embrapa Pecuária Sudeste. |
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16. | | AMARAL, C. D. B. do; SCHIAVO, D.; BARROS, J. A. V. de A.; MACHADO, R. C.; NOGUEIRA, A. R. de A.; NOBREGA, J. de A. Characterization of synchronous vertical dual view inductively coupled plasma optical emission spectrometry with application for water analysis. Analytical Letters, v. 49, n. 13, p. 1-7, 2016. Biblioteca(s): Embrapa Pecuária Sudeste. |
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17. | | MACHADO, R. C.; VIRGILIO, A.; AMARAL, C. D. B. do; SCHIAVO, D.; NOBREGA, J. de A.; NOGUEIRA, A. R. de A. Evaluation of inductively coupled plasma tandem mass spectrometry for determination of as in agricultural inputs with high REE contents. Journal of the Brazilian Chemical Society, v. 27, n. 11, p. 2076-2081, 2016. Biblioteca(s): Embrapa Pecuária Sudeste. |
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19. | | AMARAL, C. D. B. do; MACHADO, R. C.; BARROS, J. A. V. de A.; VIRGILIO, A.; SCHIAVO, D.; NOGUEIRA, A. R. de A.; NOBREGA, J. de A. Determination of rare earth elements in geological and agricultural samples by ICP-OES. Espectroscopy, v. 32, n. 10, p. 2-6, 2017. Biblioteca(s): Embrapa Pecuária Sudeste. |
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20. | | AMARAL, C. D. B. do; MACHADO, R. C.; BARROS, J. A. V. de A.; VIRGILIO, A.; SCHIAVO, D.; NOGUEIRA, A. R. de A.; NOBREGA, J. de A. Determination of rare earth elements in geological samples using the agilent SVDV ICP-OES. In: WINTER CONFERENCE ON PLASMA SPECTROCHEMISTRY, 2016, Tucson, Arizona. Proceedings... Tucson, Arizona: Winter Conference on Plasma Spectrochemistry, 2016. 5p. Biblioteca(s): Embrapa Pecuária Sudeste. |
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Registros recuperados : 22 | |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Oriental. |
Data corrente: |
14/08/2017 |
Data da última atualização: |
22/12/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
COMTE, I.; LUCOTTE, M.; DAVIDSON, R.; CARVALHO, C. J. R. de; OLIVEIRA, F. de A.; ROUSSEAU, G. X. |
Afiliação: |
Irina Comte, Université du Québec à Montréal; Marc Lucotte, Université du Québec à Montréal; Robert Davidson, Biodôme de Montréal / Université du Québec à Montréal; CLAUDIO JOSE REIS DE CARVALHO, CPATU; Francisco de Assis Oliveira, UFRA; Guillaume X. Rousseau, PÓS-GRADUANDO UEMA. |
Título: |
Impacts of land uses on mercury retention in long-time cultivated soils, Brazilian Amazon. |
Ano de publicação: |
2013 |
Fonte/Imprenta: |
Water, Air, & Soil Pollution, v. 224, n. 4, April 2013. |
DOI: |
10.1007/s11270-013-1515-3 |
Idioma: |
Inglês |
Conteúdo: |
Many studies have shown the relationship between fire clearing and mercury contamination of aquatic ecosystems in the Brazilian Amazon. This study aimed at quantifying mercury content in long-time cultivated soils and at assessing the potential of a fire-free alternative clearing technique on mercury retention for long-time cultivated soils compared to traditional slash-and-burn. This case study included five land uses: one crop plot and one pasture plot cleared using slash-and-burn, one crop plot and one pasture plot cleared using chop-and-mulch, and one 40-year-old forest as a control. Low mercury concentrations were recorded in the surface horizon (24.83 to 49.48 ng g−1, 0?5 cm depth). The long-time cultivation (repeated burnings) of these soils triggered large mercury losses in the surface horizon, highlighted by high enrichment factors from surface to deeper horizons. The predominant effect of repeated burnings before the experimental implementation did not let us to distinguish a positive effect of the chop-and-mulch clearing method on soil mercury retention for crops and pastures. Moreover, some processes related to the presence of the mulch may favor mercury retention (Hg volatilization decrease, cationic sites increase), while others may contribute to mercury losses (cationic competition and dislocation, mobilization by the dissolved organic matter). |
Palavras-Chave: |
Corte e queima. |
Thesagro: |
Mercúrio; Solo. |
Thesaurus NAL: |
Amazonia. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02087naa a2200241 a 4500 001 2074001 005 2021-12-22 008 2013 bl uuuu u00u1 u #d 024 7 $a10.1007/s11270-013-1515-3$2DOI 100 1 $aCOMTE, I. 245 $aImpacts of land uses on mercury retention in long-time cultivated soils, Brazilian Amazon.$h[electronic resource] 260 $c2013 520 $aMany studies have shown the relationship between fire clearing and mercury contamination of aquatic ecosystems in the Brazilian Amazon. This study aimed at quantifying mercury content in long-time cultivated soils and at assessing the potential of a fire-free alternative clearing technique on mercury retention for long-time cultivated soils compared to traditional slash-and-burn. This case study included five land uses: one crop plot and one pasture plot cleared using slash-and-burn, one crop plot and one pasture plot cleared using chop-and-mulch, and one 40-year-old forest as a control. Low mercury concentrations were recorded in the surface horizon (24.83 to 49.48 ng g−1, 0?5 cm depth). The long-time cultivation (repeated burnings) of these soils triggered large mercury losses in the surface horizon, highlighted by high enrichment factors from surface to deeper horizons. The predominant effect of repeated burnings before the experimental implementation did not let us to distinguish a positive effect of the chop-and-mulch clearing method on soil mercury retention for crops and pastures. Moreover, some processes related to the presence of the mulch may favor mercury retention (Hg volatilization decrease, cationic sites increase), while others may contribute to mercury losses (cationic competition and dislocation, mobilization by the dissolved organic matter). 650 $aAmazonia 650 $aMercúrio 650 $aSolo 653 $aCorte e queima 700 1 $aLUCOTTE, M. 700 1 $aDAVIDSON, R. 700 1 $aCARVALHO, C. J. R. de 700 1 $aOLIVEIRA, F. de A. 700 1 $aROUSSEAU, G. X. 773 $tWater, Air, & Soil Pollution$gv. 224, n. 4, April 2013.
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