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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
12/06/2000 |
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Data da última atualização: |
04/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, F. V.; NOGUEIRA, A. R. de A.; SOUZA, G. B. de; CRUZ, G. M. da. |
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Afiliação: |
FERNANDO V. SILVA; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; GILBERTO BATISTA DE SOUZA, CPPSE; GERALDO MARIA DA CRUZ. |
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Título: |
Determination of total, volatile and acid detergent insoluble nitrogen in silage by sequential injection. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Analytical Sciences, v.16, p.361-364, apr. 2000. |
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Idioma: |
Inglês |
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Conteúdo: |
This work proposes a sequential injection procedure to determine the total, volatile and acid detergent insoluble nitrogencontent in silage. An ammonium tubular selective electrode coupled to a sequential injection manifold was used asdetector to accomplish the potentiometric determinations made after on-line ammonia diffusion in alkaline mediumthrough a Teflon membrane and NH3/NH4+conversion. Different sample treatments, taking into account the species to beanalyzed, were adopted to apply the proposed procedure to silage samples. An analytical frequency of 30 samples h?1anda detection limit of 3.0 mg N l?1were observed when 300 ?l of 3.0 mol l?1NaOH solution and a sample volume of 150 ?lwere employed. The use of the proposed procedure allowed the automation of the determinations, low sample andreagent consumption and small waste production, emphasizing the versatility and potentiality of the flow methods whenapplied to animal nutrition laboratories. |
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Palavras-Chave: |
Acid detergent; Determination total; Sequential injection; Volatile. |
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Thesaurus Nal: |
nitrogen; silage. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01641naa a2200229 a 4500
001 1044902
005 2022-01-04
008 2000 bl uuuu u00u1 u #d
100 1 $aSILVA, F. V.
245 $aDetermination of total, volatile and acid detergent insoluble nitrogen in silage by sequential injection.$h[electronic resource]
260 $c2000
520 $aThis work proposes a sequential injection procedure to determine the total, volatile and acid detergent insoluble nitrogencontent in silage. An ammonium tubular selective electrode coupled to a sequential injection manifold was used asdetector to accomplish the potentiometric determinations made after on-line ammonia diffusion in alkaline mediumthrough a Teflon membrane and NH3/NH4+conversion. Different sample treatments, taking into account the species to beanalyzed, were adopted to apply the proposed procedure to silage samples. An analytical frequency of 30 samples h?1anda detection limit of 3.0 mg N l?1were observed when 300 ?l of 3.0 mol l?1NaOH solution and a sample volume of 150 ?lwere employed. The use of the proposed procedure allowed the automation of the determinations, low sample andreagent consumption and small waste production, emphasizing the versatility and potentiality of the flow methods whenapplied to animal nutrition laboratories.
650 $anitrogen
650 $asilage
653 $aAcid detergent
653 $aDetermination total
653 $aSequential injection
653 $aVolatile
700 1 $aNOGUEIRA, A. R. de A.
700 1 $aSOUZA, G. B. de
700 1 $aCRUZ, G. M. da
773 $tAnalytical Sciences$gv.16, p.361-364, apr. 2000.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| 1. |  | ANACLETO, P.; BARBOSA, V.; ALVES, R.; MAULVAULT, A. L.; FOGACA, F. H. dos S.; LANGERHOLC, T.; MARQUES, A. Use of green tea to reduce methylmercury bioaccessibility in raw and cooked fish. In: CONFERENCE OF THE WEST EUROPEAN FISH TECHNOLOGISTS'ASSOCIATION, 48., 2018, Lisbon. Agronegócio do pescado: desafios e oportunidades.Anais... São Paulo: Instituto da Pesca, 2018. WEFTA. 15 a 18 out. 2018.| Tipo: Resumo em Anais de Congresso |
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