STRONTIUM 90 IN U.S. WHEAT AND FLOUR
Journal Article
·
· Ohio Agr. Expt. Sta., Spec. Rept. Ser.
OSTI ID:4135242
A study of the Sr/sup 90/ contamination of wheat and flour was made by the Health and Safety Laboratories (HASL). Samples were obtained from Minnesota crops of 1956, 1957, and 1958. Wheat and milling products from the 1958 crops of nine additional states were obtained and analyzed for Sr/sup 90/ and calcium. Previous experiments showed that strontium derived from the soil is taken up relatively poorly by the berry and tends to concentrate in the brand fraction. Sr/sup 90//Ca ratios in U. S. wheat crops were determined for each year between 1958 and 1961. Patent flour was found to contain 10% of the Sr/sup 90/ in wheat. The Sr/sup 90//Ca ratio in the flour was about two-fifths that of the wheat. Specific activity ( mu mu C Sr/sup 90//mg Sr) measurements in bran layer fractions indicated that the mechanism of contamination was by direct deposition of the outermost tissues of the berry and then some translocations of the Sr/sup 90/ to the inner tissues from which flour is made. From the HASL tri-city diet study it was deduced that from 10 to 20% of the total Sr/sup 90/ was taken in at each of the cities. Sr/sup 90//Ca ratio in the total diet was lower than that of wheat products. The significance of this finding for dietary control of Sr/sup 90/ levels is indicated. (H.M.G.)
- Research Organization:
- U.S. Atomic Energy Commission, New York
- NSA Number:
- NSA-18-003619
- OSTI ID:
- 4135242
- Journal Information:
- Ohio Agr. Expt. Sta., Spec. Rept. Ser., Journal Name: Ohio Agr. Expt. Sta., Spec. Rept. Ser. Vol. Vol: No. 1
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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