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| Registros recuperados : 1 | |
| Registros recuperados : 1 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
09/02/2009 |
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Data da última atualização: |
12/01/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
HAYES, M. H. B.; NOVOTNY, E. H.; FLANAGAN, R. |
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Afiliação: |
MICHAEL H. B. HAYES, UNIVERSITY OF LIMERICK; ETELVINO HENRIQUE NOVOTNY, CNPS; ROBERT FLANAGAN, UNIVERSITY OF LIMERICK. |
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Título: |
Biochar and it's characterisations. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: ANNUAL INTERNATIONAL MEETING OF THE INTERNATIONAL BIOCHAR INITIATIVE, 2., 2008, Newcastle. Biochar, sustainability and security in a changing climate. Newcastle: International Biochar Initiative, 2008. p. 16. Oral presentations. |
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Idioma: |
Inglês |
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Conteúdo: |
NMR provides a powerful tool for studies of compositions of Biochars. However, the usual NMR procedures used for humic and SOM studies do not meet specific requirements for Biochars because pyrogenic materials present strong local magnetic susceptibility heterogeneities. Our data show that uses of CSA-filter and TOSS techniques make the pulse sequences very sensitive to imperfections in the pulses. We will show how we have used Variable Amplitude CP - (VACP)/MAS spectra and composite pulses in the CSA-filter and TOSS pulse sequences. In that way the component functionalities in a humic acid (HA) from a Terra Preta soil were successfully determined. Other techniques will be discussed. |
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Palavras-Chave: |
NMR; Terra preta de índio. |
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Thesaurus NAL: |
Biochar; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/230193/1/Biochar-and-its-characterisations-2008.pdf
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Marc: |
LEADER 01371nam a2200181 a 4500
001 1339823
005 2022-01-12
008 2008 bl uuuu u00u1 u #d
100 1 $aHAYES, M. H. B.
245 $aBiochar and it's characterisations.$h[electronic resource]
260 $aIn: ANNUAL INTERNATIONAL MEETING OF THE INTERNATIONAL BIOCHAR INITIATIVE, 2., 2008, Newcastle. Biochar, sustainability and security in a changing climate. Newcastle: International Biochar Initiative, 2008. p. 16. Oral presentations.$c2008
520 $aNMR provides a powerful tool for studies of compositions of Biochars. However, the usual NMR procedures used for humic and SOM studies do not meet specific requirements for Biochars because pyrogenic materials present strong local magnetic susceptibility heterogeneities. Our data show that uses of CSA-filter and TOSS techniques make the pulse sequences very sensitive to imperfections in the pulses. We will show how we have used Variable Amplitude CP - (VACP)/MAS spectra and composite pulses in the CSA-filter and TOSS pulse sequences. In that way the component functionalities in a humic acid (HA) from a Terra Preta soil were successfully determined. Other techniques will be discussed.
650 $aBiochar
650 $aSoil organic matter
653 $aNMR
653 $aTerra preta de índio
700 1 $aNOVOTNY, E. H.
700 1 $aFLANAGAN, R.
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Embrapa Solos (CNPS) |
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