Abstract
The study was to compare the selenium content of nonfat dry milk samples of differing geographic origin. Samples from 15 countries (states) were collected and analyzed for selenium by electrothermal atomic absorption spectrometry. The lowest national mean of the samples collected in 1982 to 1983 was 43μg/kg dry matter (Czechoslovakia) and the highest 340μg/kg (United States, North Dakota). The mean of the entire study was 115±80μg/kg and the range 33 to 420μg/kg. The coefficient of variation of the method, estimated by analyzing a blind control sample repeatedly during the study, was 12%. Selenium content of nonfat dry milk varies greatly depending on the geographic origin of the milk. Nevertheless, the range may be less than that for cereals.
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