fo ty 122 PG SET ELIR hasae ne AD TERME Cage Us TN RADIATION STANDARDS, INCLUDING FALLOUT Comparison of these estimated average daily intakes with the gnidance of the Federal Radiation Council shows that all of the intakes were in range I. Intakes at the upper Umit of range I continued indefinitely would result in radiation doses to bone and bone marrow one-thirtieth of the RPG’s for normal peacetime operations. OCCURRENCE OF CESIUM 137 AND BARIUM 140 Data on milk content of cesium 137 and barium 140 are regularly reported in Radiological Health Data. The estimated intake of cesium 137 and barium 140 based upon the analysis of these radionuclides in milk has been considerably lower in relation to accepted guides than those of strontium 89 and strontium 90. TasBLe III.—Daily intake of calcium and strontium 90 from environmental sources Source Aff_..222-2 eee cubic meters... Water.__....--.-.------2- ene e grams_. Food: Milk.-__..-.---2.--- ee do.... Estimated intake Calcium Milligrams] Strontium 90 Percent 20 j..----------f-----------1, 000 60 5.2 500 Datry products, other_..._..-_ do___. Vegetables__..-__..-.-.---_.--do___. Meat, fish, and eggs_._..._._-. do._.. Cereal products. _.--..--..-.--do._.. ther... eee do. _._ 45 370 370 130 130 Food total....-..-2-.--2-_e do._.. 1, 545 Total... 00.2 e eee eee 600 145 145 100 60 45 52.0 12, 5 12.5 8.7 5.2 3.9 Micromicrocuries __ Percent 0.8 .8 6.0 1.8 3.4 .8 L4 4 5.2 5.2 : 39.0 11.7 22. 0 §.2 $.1 2.6 1,095 94.8 13.8 89. 6 1,155 100. 0 15.4 100.0 Note.—This table presents an estimate of the amounts of strontium 90 and calcium that might be ingested or inhaled daily by man from environmental radiation sources such as air, water, and food. These data were taken from studies conducted in 1958-59 on the above sources by the research group at the Robert A. Taft Sanitary Engineering Center, Public Health Service, Cincinnati, Ohio. -(Radiological Health Data, vol. 7, October 1960.) Pay K in 4 iisaired!Saglehdebsgtagetete Ve. ae TAD crigSedadaaeteeyee bbsdigwse RRR