Adaptation of a dry ashing procedure for determination of selenium by fluorimetry in high-fat foods.
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.
Bellanger
J R
JR
Institut National de la Recherche Agronomique, Human Nutrition Research Center, Saint Genes Champanelle, France.
D000818:Animals; D002417:Cattle; D002611:Cheese / Q000032:analysis*; D005399:Fishes; D005470:Fluorometry / Q000379:methods*; D008460:Meat / Q000032:analysis*; D008892:Milk / Q000737:chemistry*; D015203:Reproducibility of Results; D012643:Selenium / Q000032:analysis*
D012643:Selenium