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| Registros recuperados : 716 | |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
13/05/2003 |
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Data da última atualização: |
28/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Internacional - A |
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Autoria: |
KAMOGAWA, M. Y.; NOGUEIRA, A. R. de A. |
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Afiliação: |
MARCOS Y. KAMOGAWA, UFSCAR; ANA RITA DE ARAUJO NOGUEIRA, CPPSE. |
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Título: |
Flow systems to gas capture from a nebulized solution. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Analytical Chimica Acta, n. 479, p. 167-172, 2003. |
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DOI: |
https://doi.org/10.1016/S0003-2670(02)01549-0 |
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Idioma: |
Inglês |
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Conteúdo: |
The use of aerosol produced in a nebulization chamber is proposed as an alternative to gas sample capture in flow systems. This paper describes the coupling of a sampling interface with a flow system, for in situ gas monitoring. Aspects related with the behavior of aerosol formation and gas solubilization in liquid drops are discussed. The method is applied to the determination of residual lime in acidic soils. Aliquots of 5.0 ml of 1.0 mol l?1 HCl were mixed with soil samples (1 g). The CO2 released from these samples was captured by a nebulized aerosol and determined conductivity. The analytical curve from 1.0×10?2 to 5.0×10?2 mol kg?1 CaCO3 was ploted applying the matrix matching approach. This proposition, allowed an increase in the sensibility with detection limit of 6.0×10?3 mol kg?1. The precision was good (R.S.D. <3%) for an analytical frequency of 22 determinations per hour. A fair agreement, at 95% confidence level, was found between the results from the proposed method and certified values of the investigated samples. |
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Palavras-Chave: |
Aerosol; CO2; Flow system; Nebulization; Residual lime. |
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Thesaurus NAL: |
soil. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
LEADER 01659naa a2200217 a 4500
001 1046358
005 2023-06-28
008 2003 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/S0003-2670(02)01549-0$2DOI
100 1 $aKAMOGAWA, M. Y.
245 $aFlow systems to gas capture from a nebulized solution.$h[electronic resource]
260 $c2003
520 $aThe use of aerosol produced in a nebulization chamber is proposed as an alternative to gas sample capture in flow systems. This paper describes the coupling of a sampling interface with a flow system, for in situ gas monitoring. Aspects related with the behavior of aerosol formation and gas solubilization in liquid drops are discussed. The method is applied to the determination of residual lime in acidic soils. Aliquots of 5.0 ml of 1.0 mol l?1 HCl were mixed with soil samples (1 g). The CO2 released from these samples was captured by a nebulized aerosol and determined conductivity. The analytical curve from 1.0×10?2 to 5.0×10?2 mol kg?1 CaCO3 was ploted applying the matrix matching approach. This proposition, allowed an increase in the sensibility with detection limit of 6.0×10?3 mol kg?1. The precision was good (R.S.D. <3%) for an analytical frequency of 22 determinations per hour. A fair agreement, at 95% confidence level, was found between the results from the proposed method and certified values of the investigated samples.
650 $asoil
653 $aAerosol
653 $aCO2
653 $aFlow system
653 $aNebulization
653 $aResidual lime
700 1 $aNOGUEIRA, A. R. de A.
773 $tAnalytical Chimica Acta$gn. 479, p. 167-172, 2003.
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