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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
04/08/1995 |
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Data da última atualização: |
04/08/1995 |
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Autoria: |
WILLIAMS, E. V. |
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Título: |
New techniques for the digestion of biological materials application to the determination of tin, iron and lead in canned foods. |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
Journal Food Technological, v.13, n.5, p.367-384, 1978. |
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Idioma: |
Inglês |
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Conteúdo: |
A new technique for the digestion of biological materials has been developed and this has been applied to the determination of trace metals in canned foods. It is based on sample digestion in concentrated acid under pressure in a disposable polystyrene container. The digest can be analysed directly by atomic absorption or plasma emission and has the advantages of simplicity, high sensitivity (low blank value), rapid batch sample throughout rate, economy and suitability for automotion. Various foods have been classified empirically into three groups on the basis of the ease with they can be decomposed chemically to a form suitable for analysis. After classification, preparation follows one of two different procedures depending on the elements to be determined. The system has been verified for tin, iron and lead by comparison with other more conventional procedures. |
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Palavras-Chave: |
Biological materials; Comida enlatada; Heavy metal; Material biologico. |
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Thesagro: |
Digestão; Metal Pesado. |
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Thesaurus Nal: |
canned foods; digestion. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01527naa a2200217 a 4500
001 1785283
005 1995-08-04
008 1978 bl --- 0-- u #d
100 1 $aWILLIAMS, E. V.
245 $aNew techniques for the digestion of biological materials application to the determination of tin, iron and lead in canned foods.
260 $c1978
520 $aA new technique for the digestion of biological materials has been developed and this has been applied to the determination of trace metals in canned foods. It is based on sample digestion in concentrated acid under pressure in a disposable polystyrene container. The digest can be analysed directly by atomic absorption or plasma emission and has the advantages of simplicity, high sensitivity (low blank value), rapid batch sample throughout rate, economy and suitability for automotion. Various foods have been classified empirically into three groups on the basis of the ease with they can be decomposed chemically to a form suitable for analysis. After classification, preparation follows one of two different procedures depending on the elements to be determined. The system has been verified for tin, iron and lead by comparison with other more conventional procedures.
650 $acanned foods
650 $adigestion
650 $aDigestão
650 $aMetal Pesado
653 $aBiological materials
653 $aComida enlatada
653 $aHeavy metal
653 $aMaterial biologico
773 $tJournal Food Technological$gv.13, n.5, p.367-384, 1978.
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Embrapa Pantanal (CPAP) |
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