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Headspace solid-phase micro-extraction gas chromatography method for the determination of methanol in aspartame sweeteners.
Sales, J A; de Lourdes Cardeal, Z.
Afiliação
  • Sales JA; Chemistry Department, ICEx, Federal University of Minas Gerais, 6627 31270-901, Av. Antônio Carlos, Belo Horizonte, MG, Brazil.
Food Addit Contam ; 20(6): 519-23, 2003 Jun.
Article em En | MEDLINE | ID: mdl-12881123
A headspace solid-phase micro-extraction (HS-SPME) method for the extraction and determination of residual methanol in artificial sweeteners by capillary gas chromatography with flame ionization detection (GC-FID) is described. A manual SPME holder with an 85- microm polyacrylate fibre was used. The optimized conditions for methanol extraction by SPME were: sample agitation, absorption temperature of 30 degrees C, absorption time of 10 min, desorption time of 2 min and sample volume in the vial of 400.0 micro l. Under these conditions the calibration graphs were linear in the range 2.50-31.60 mg x l(-1), and the precision was good (relative standard deviation 4.9%). The detection limit was 0.40 mg x l(-1); the quantification limit was 2.06 mg x l(-1).
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aspartame / Contaminação de Alimentos / Metanol Limite: Humans Idioma: En Revista: Food Addit Contam Assunto da revista: CIENCIAS DA NUTRICAO Ano de publicação: 2003 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Aspartame / Contaminação de Alimentos / Metanol Limite: Humans Idioma: En Revista: Food Addit Contam Assunto da revista: CIENCIAS DA NUTRICAO Ano de publicação: 2003 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido