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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
17/09/2012 |
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Data da última atualização: |
17/09/2012 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
DUARTE, A. P.; MELO, V. F.; BROWN, G. G.; PAULETTI, V. |
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Afiliação: |
Ana Paula Duarte, UFPR; Vander Freitas Melo, UFPR; GEORGE GARDNER BROWN, CNPF; Volnei Pauletti, UFPR. |
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Título: |
Changes in the forms of lead and manganese in soils by passage through the gut of the tropical endogeic earthworm (Pontoscolex corethrurus). |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
European Journal of Soil Biology, v. 53, p. 32-39, Nov./Dec. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
To investigate the effect of the soil passage through the gut of earthworms (Pontoscolex corethrurus) on the forms of Pb and Mn, casts and soil samples were analyzed by sequential extraction procedure. Soil samples were collected in an area under direct influence of mining and metallurgy of Pb in the Parana state, Brazil. The earthworms were incubated with the soils to collect castings. The Pb and Mn concentrations were determined in seven sequential phases: soluble; exchangeable; carbonate; organic matter; Fe and Mn oxides; Al oxides and aluminosilicates; residual. There was intense contamination with Pb in the area, mainly in the clayish soil surrounding the factory by the deposition of suspended material coming from the chimneys (maximum concentration 9716 mg kg1). On the other hand, total concentration of soil Mn was little influenced by the mining and metallurgy activities in the area. The earthworms significantly reduced the amount of Pb in the soluble and exchangeable forms in the soil, considered environmentally more bioavailable. There was also a significant increase in Pb bound in Fe and Mn oxides in the casts (specific absorption), which is desirable for soil bioremediation. |
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Palavras-Chave: |
Castings; Pb toxicity; Sequential extraction; Soil contamination; Soil oxides; Toxicidade. |
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Thesagro: |
Contaminação; Oxido; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01998naa a2200265 a 4500
001 1933868
005 2012-09-17
008 2012 bl uuuu u00u1 u #d
100 1 $aDUARTE, A. P.
245 $aChanges in the forms of lead and manganese in soils by passage through the gut of the tropical endogeic earthworm (Pontoscolex corethrurus).$h[electronic resource]
260 $c2012
520 $aTo investigate the effect of the soil passage through the gut of earthworms (Pontoscolex corethrurus) on the forms of Pb and Mn, casts and soil samples were analyzed by sequential extraction procedure. Soil samples were collected in an area under direct influence of mining and metallurgy of Pb in the Parana state, Brazil. The earthworms were incubated with the soils to collect castings. The Pb and Mn concentrations were determined in seven sequential phases: soluble; exchangeable; carbonate; organic matter; Fe and Mn oxides; Al oxides and aluminosilicates; residual. There was intense contamination with Pb in the area, mainly in the clayish soil surrounding the factory by the deposition of suspended material coming from the chimneys (maximum concentration 9716 mg kg1). On the other hand, total concentration of soil Mn was little influenced by the mining and metallurgy activities in the area. The earthworms significantly reduced the amount of Pb in the soluble and exchangeable forms in the soil, considered environmentally more bioavailable. There was also a significant increase in Pb bound in Fe and Mn oxides in the casts (specific absorption), which is desirable for soil bioremediation.
650 $aContaminação
650 $aOxido
650 $aSolo
653 $aCastings
653 $aPb toxicity
653 $aSequential extraction
653 $aSoil contamination
653 $aSoil oxides
653 $aToxicidade
700 1 $aMELO, V. F.
700 1 $aBROWN, G. G.
700 1 $aPAULETTI, V.
773 $tEuropean Journal of Soil Biology$gv. 53, p. 32-39, Nov./Dec. 2012.
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Registro original: |
Embrapa Florestas (CNPF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
09/10/2018 |
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Data da última atualização: |
07/01/2020 |
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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: |
ASENSIO, V.; ABREU-JUNIOR, C. H.; SILVA, F. C. da; CHITOLINA, J. C. |
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Afiliação: |
VERONICA ASENSIO, Cena/USP; CÁSSIO HAMILTON ABREU-JUNIOR, Cena/USP; FABIO CESAR DA SILVA, CNPTIA; JOSÉ CARLOS CHITOLINA, Fundação Municipal de Ensino de Piracicaba. |
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Título: |
Evaluation of chemical extractants to assess metals phytoavailability in Brazilian municipal solid waste composts. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Environmental Pollution, v. 243, Part B, p. 1235-1241, Dec. 2018. |
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DOI: |
https://doi.org/10.1016/j.envpol.2018.09.100 |
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Idioma: |
Inglês |
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Conteúdo: |
Municipal solid wastes (MSW) can be composted to become an organic fertilizer. However, besides plant nutrients, it can also contain high concentration of some toxic metals than can pollute agricultural soils, contaminate food, animals and human being. A greenhouse experiment was carried out for two purposes: i) to evaluate the concentrations of cadmium, copper, chromium, nickel, lead and zinc in four Brazilian MSW composts, and, ii) to know which is the best solution for extracting those metals in phytoavailable form from the composts. In order to evaluate the phytoavailability of metals, they were extracted with six chemical extractants: i) water, ii) 0.05 mol L-1 Ca(NO3)2, iii) 0.1 mol L-1 HCl, iv) 0.005 mol L-1 DTPA at pH 7.3, v) 0.05 mol L-1 CaCl2 and vi) Mehlich 3 solution. In addition, lettuces were cultivated as a test plant in pots containing 1.8 kg of MSW compost as substrate. Fifty-six days later, lettuce plants were harvested. New lettuces were then planted for a second cycle, and then harvested after fifty-six days. Semi-total concentration of metals in composts and total in plants was also determined through an extraction with nitric-perchloric acid. Semi-total concentration of Cd and Pb exceeded the intervention limits from Brazil in the four studied composts, and lettuce plants were polluted by those two elements. Therefore, compost made of MSW must be characterized before being used for agricultural soils. Copper and nickel in phytoavailable were effectively extracted with the strongest chelating agents used, HCl and Mehlich 3, probably because most metal is bound to organic matter in the compost. Cadmium, chromium, lead and zinc were no efficiently extracted with any of the tested extractants. MenosMunicipal solid wastes (MSW) can be composted to become an organic fertilizer. However, besides plant nutrients, it can also contain high concentration of some toxic metals than can pollute agricultural soils, contaminate food, animals and human being. A greenhouse experiment was carried out for two purposes: i) to evaluate the concentrations of cadmium, copper, chromium, nickel, lead and zinc in four Brazilian MSW composts, and, ii) to know which is the best solution for extracting those metals in phytoavailable form from the composts. In order to evaluate the phytoavailability of metals, they were extracted with six chemical extractants: i) water, ii) 0.05 mol L-1 Ca(NO3)2, iii) 0.1 mol L-1 HCl, iv) 0.005 mol L-1 DTPA at pH 7.3, v) 0.05 mol L-1 CaCl2 and vi) Mehlich 3 solution. In addition, lettuces were cultivated as a test plant in pots containing 1.8 kg of MSW compost as substrate. Fifty-six days later, lettuce plants were harvested. New lettuces were then planted for a second cycle, and then harvested after fifty-six days. Semi-total concentration of metals in composts and total in plants was also determined through an extraction with nitric-perchloric acid. Semi-total concentration of Cd and Pb exceeded the intervention limits from Brazil in the four studied composts, and lettuce plants were polluted by those two elements. Therefore, compost made of MSW must be characterized before being used for agricultural soils. Copper and nickel in phytoavailable were effectively... Mostrar Tudo |
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Palavras-Chave: |
Chemical extractants; Metal phytoavailability; Municipal solid waste compost. |
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Thesagro: |
Alface; Cobre; Resíduo Solido. |
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Thesaurus NAL: |
Copper; Lettuce; Municipal solid waste. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02616naa a2200277 a 4500
001 2097088
005 2020-01-07
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.envpol.2018.09.100$2DOI
100 1 $aASENSIO, V.
245 $aEvaluation of chemical extractants to assess metals phytoavailability in Brazilian municipal solid waste composts.$h[electronic resource]
260 $c2018
520 $aMunicipal solid wastes (MSW) can be composted to become an organic fertilizer. However, besides plant nutrients, it can also contain high concentration of some toxic metals than can pollute agricultural soils, contaminate food, animals and human being. A greenhouse experiment was carried out for two purposes: i) to evaluate the concentrations of cadmium, copper, chromium, nickel, lead and zinc in four Brazilian MSW composts, and, ii) to know which is the best solution for extracting those metals in phytoavailable form from the composts. In order to evaluate the phytoavailability of metals, they were extracted with six chemical extractants: i) water, ii) 0.05 mol L-1 Ca(NO3)2, iii) 0.1 mol L-1 HCl, iv) 0.005 mol L-1 DTPA at pH 7.3, v) 0.05 mol L-1 CaCl2 and vi) Mehlich 3 solution. In addition, lettuces were cultivated as a test plant in pots containing 1.8 kg of MSW compost as substrate. Fifty-six days later, lettuce plants were harvested. New lettuces were then planted for a second cycle, and then harvested after fifty-six days. Semi-total concentration of metals in composts and total in plants was also determined through an extraction with nitric-perchloric acid. Semi-total concentration of Cd and Pb exceeded the intervention limits from Brazil in the four studied composts, and lettuce plants were polluted by those two elements. Therefore, compost made of MSW must be characterized before being used for agricultural soils. Copper and nickel in phytoavailable were effectively extracted with the strongest chelating agents used, HCl and Mehlich 3, probably because most metal is bound to organic matter in the compost. Cadmium, chromium, lead and zinc were no efficiently extracted with any of the tested extractants.
650 $aCopper
650 $aLettuce
650 $aMunicipal solid waste
650 $aAlface
650 $aCobre
650 $aResíduo Solido
653 $aChemical extractants
653 $aMetal phytoavailability
653 $aMunicipal solid waste compost
700 1 $aABREU-JUNIOR, C. H.
700 1 $aSILVA, F. C. da
700 1 $aCHITOLINA, J. C.
773 $tEnvironmental Pollution$gv. 243, Part B, p. 1235-1241, Dec. 2018.
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