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| Registros recuperados : 513 | |
| 64. |  | PALLU, T. N. P.; VAZ, C. M. P. Avaliação do procedimento de dispersão e preparo de amostras para a análise granulométrica de solos. In: JORNADA CIENTÍFICA - EMBRAPA SÃO CARLOS, 4., 2012, São Carlos, SP. Anais... São Carlos: Embrapa Instrumentação: Embrapa Pecuária Sudeste, 2012. p. 110. Editores técnicos: João de Mendonça Naime, Lucimara Aparecida Forato, Maria Alice Martins, Ladislau Marcelino Rabello, Rubens Bernardes Filho. (Embrapa Instrumentação. Documentos, 56)| Biblioteca(s): Embrapa Instrumentação. |
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| 68. | | HERRMANN, P. S. P.; VAZ, C. M. P.; CRESTANA, S. Caracterização na escala nanométrica, de caolinita, através da microscopia de varredura por força. In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 13., 2000, Ilhéus, BA. 500 anos de uso do solo no Brasil. Ilhéus: CEPLAC: CEPEC, 2000. p. 290-291. 1 CD-ROM.| Biblioteca(s): Embrapa Instrumentação. |
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 | 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. |
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Data corrente: |
28/04/2003 |
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Data da última atualização: |
28/04/2003 |
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Autoria: |
VAZ, C. M. P.; HERRMANN, P. S. P.; CRESTANA, S. |
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Afiliação: |
Embrapa Instrumentação Agropecuária, São Carlos, SP. |
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Título: |
Thickness and size distribution of clay-sized soil particles measured through atomic force microscopy. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Powder Technology, Lausanne, v. 126, p. 51-58, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Soil particle size distribution is a very important soil characterisitc because it is related with many physical, chemical and biological processes occurring in soils. However, at the sub-micron range, where many important sorption and transformations processes occur, there are scanning electron microscopy (SEM_. The classical TEM and SEM, however, are sometimes unable to clearly differente between agglomerantes, particles and grains, and sample preparation is very difficult and tedious. To overcome these limitations, we have aplied the atomic force microscopy (AFM) technique to analyse the particle size distribution of an oxisol from São Carlos site, in Brazil, at the sub-micron range. Thicness and diameter of soil particles deposited in freshly, cleaved mica were measured for each individual particle, allowing to determine their particle size distribution. Assuming cylindrical shaped particles and a constant aprticle density of 2.7 gcm-3, the mass=based soil particle distribution at the sub-micron range is obtained. |
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Palavras-Chave: |
AFM; Microscopia de força atômica; Particle tichness. |
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Thesagro: |
Solo. |
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Thesaurus NAL: |
atomic force microscopy; kaolinite; particle size; soil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01716naa a2200241 a 4500
001 1024632
005 2003-04-28
008 2002 bl --- 0-- u #d
100 1 $aVAZ, C. M. P.
245 $aThickness and size distribution of clay-sized soil particles measured through atomic force microscopy.
260 $c2002
520 $aSoil particle size distribution is a very important soil characterisitc because it is related with many physical, chemical and biological processes occurring in soils. However, at the sub-micron range, where many important sorption and transformations processes occur, there are scanning electron microscopy (SEM_. The classical TEM and SEM, however, are sometimes unable to clearly differente between agglomerantes, particles and grains, and sample preparation is very difficult and tedious. To overcome these limitations, we have aplied the atomic force microscopy (AFM) technique to analyse the particle size distribution of an oxisol from São Carlos site, in Brazil, at the sub-micron range. Thicness and diameter of soil particles deposited in freshly, cleaved mica were measured for each individual particle, allowing to determine their particle size distribution. Assuming cylindrical shaped particles and a constant aprticle density of 2.7 gcm-3, the mass=based soil particle distribution at the sub-micron range is obtained.
650 $aatomic force microscopy
650 $akaolinite
650 $aparticle size
650 $asoil
650 $aSolo
653 $aAFM
653 $aMicroscopia de força atômica
653 $aParticle tichness
700 1 $aHERRMANN, P. S. P.
700 1 $aCRESTANA, S.
773 $tPowder Technology, Lausanne$gv. 126, p. 51-58, 2002.
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