Surfactant/oil/water system for the determination of selenium in eggs by graphite furnace atomic absorption spectrometry
作者： C.V.S. Ieggli , D. Bohrer , S. Noremberg , P.C. do Nascimento , L.M. de Carvalho
DOI: 10.1016/J.SAB.2009.05.007
关键词:
摘要: Abstract An oil-in-water formulation has been optimized to determine trace levels of selenium in whole hen eggs by graphite furnace atomic absorption spectrometry. This method is simpler and requires fewer reagents when compared with other sample pre-treatment procedures. Graphite spectrometric (GF AAS) measurement was carried out using standard addition calibration Pd as a modifier. The precision, expressed relative deviation, better than 5% the limit detection 1 µg L − 1 . validation performed against reference material Whole Egg Powder (RM 8415), measured Se corresponded 95.2% certified value. used for determination level from hens treated dietary supplements. Inorganic organic sources were added feed. content higher fed treatments. proposed method, including emulsification subsequent GF AAS proved be sensitive, reproducible, simple economical.
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