The wet ashing-dry ashing procedure for destruction of organic matter in high-fat foods for subsequent fluorimetric determination of selenium was investigated. Samples were decomposed by predigestion with nitric acid and dry-ashed with magnesium nitrate and hydrochloric acid. Selenium was recovered quantitatively through the total procedure. Detection limit was about 4 ppb. Accuracy was tested by analysis of several reference materials and by comparison with the wet-digestion method. The present method can be used conveniently for selenium determination in high-fat foods.
机构:Epidemiology Branch, Division of Nutrition, National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control, Atlanta, GA
SERDULA, M
BYERS, T
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机构:Epidemiology Branch, Division of Nutrition, National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control, Atlanta, GA
BYERS, T
COATES, R
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机构:Epidemiology Branch, Division of Nutrition, National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control, Atlanta, GA
COATES, R
MOKDAD, A
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机构:Epidemiology Branch, Division of Nutrition, National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control, Atlanta, GA
MOKDAD, A
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SIMOES, EJ
ELDRIDGE, L
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机构:Epidemiology Branch, Division of Nutrition, National Center for Chronic Disease Prevention and Health Promotion Centers for Disease Control, Atlanta, GA