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Type: Artigo de periódico
Title: Determination of Selenium in Liquid Dietetic Sweeteners by GF AAS
Author: de Sousa, RA
Santos, MC
Baccan, N
Cadore, S
Abstract: Graphite furnace atomic absorption spectrometry was used to determine Se in liquid dietetic sweeteners. The optimized pyrolysis and atomization temperatures were 1,100 and 1,900 A degrees C, respectively. Since there is not a certified reference material for sweeteners, addition and recovery experiments were used to evaluate the accuracy of the proposed method. The obtained recovery values were between 94% and 108%, without the use of a mineralization step, except for the aspartame sweeteners. The instrument limit of detection was 0.02 A mu g L(-1) and the relative standard deviations were below 6.4%. The methods studied were applied to different kinds of sweeteners having cyclamate-saccharine, cyclamate-saccharine-stevioside, or aspartame. The analyte concentrations were compared with the limits established for inorganic species in foods by ANVISA (Brazilian Agency for Health and Safety). The results indicate that there is a huge variation in the concentration of selenium in the 27 samples studied and that the values can be considered relatively high for the sweeteners with cyclamate/saccharine and cyclamate/saccharine/stevioside contents.
Subject: Selenium
Dietetic Sweeteners
Country: EUA
Editor: Springer
Rights: fechado
Identifier DOI: 10.1007/s12161-009-9074-3
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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