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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
06/08/2003 |
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Data da última atualização: |
06/08/2003 |
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Autoria: |
SEARLE, P. L. |
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Título: |
The Berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Analyst, Cambridge, v. 109, p. 549-568, 1984. |
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Idioma: |
Inglês |
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Conteúdo: |
Historical. Nature of the reaction, mechanism, reagents, phenols, hypohalite sources, catalysts. Reaction conditions, pH dependence, of monochloramine formation, of phenol concentration, of indophenol dissociation, of absorption maxima, of rate of colour development, of colour stability, of gas volatisation and absorption. Reagent concentrations, phenols, hypohalite sources, nitroprusside. Development time and temperature. Order of addition of reagents. Colour stability. Absorption maximum. Sensitivity. Interferences, nitrogen compounds, metals, non-metals, salt effect, light. Solvent extraction methods. Automated methods, reagents, reaction conditions, interferences, analysis rates. Radiochemical methods. Applications, agriculture, clinical, food, waters, metallurgy, petroleum, gases, pharmaceutical products. Conclusions, phenols, hypochlorite source, catalysts, pH, other variables, interferences. |
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Thesagro: |
Análise Química; Nitrogênio. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01331naa a2200145 a 4500
001 1597352
005 2003-08-06
008 1984 bl --- 0-- u #d
100 1 $aSEARLE, P. L.
245 $aThe Berthelot or indophenol reaction and its use in the analytical chemistry of nitrogen.
260 $c1984
520 $aHistorical. Nature of the reaction, mechanism, reagents, phenols, hypohalite sources, catalysts. Reaction conditions, pH dependence, of monochloramine formation, of phenol concentration, of indophenol dissociation, of absorption maxima, of rate of colour development, of colour stability, of gas volatisation and absorption. Reagent concentrations, phenols, hypohalite sources, nitroprusside. Development time and temperature. Order of addition of reagents. Colour stability. Absorption maximum. Sensitivity. Interferences, nitrogen compounds, metals, non-metals, salt effect, light. Solvent extraction methods. Automated methods, reagents, reaction conditions, interferences, analysis rates. Radiochemical methods. Applications, agriculture, clinical, food, waters, metallurgy, petroleum, gases, pharmaceutical products. Conclusions, phenols, hypochlorite source, catalysts, pH, other variables, interferences.
650 $aAnálise Química
650 $aNitrogênio
773 $tAnalyst, Cambridge$gv. 109, p. 549-568, 1984.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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