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Main Title 131I levels in cow's milk following ingestion of contaminated alfalfa or sudan grass /
Author Black, Stuart C. ; Black, S. C. ; Stanley, R. E. ; Barth., D. S.
Other Authors
Author Title of a Work
Stanley, Richard E.
Barth, Delbert S.
CORP Author Environmental Protection Agency, Las Vegas, Nev. Environmental Monitoring and Support Lab.
Publisher U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory ; Available from the National Technical Information Service,
Year Published 1975
Report Number EMSL-LV-539-1; AT(26-1)-539; EMSL-LV-0539-1
Stock Number EMSL-LV-539-1
OCLC Number 36882631
Subjects Iodine--Isotopes ; Radioactive substances--Toxicology ; Radioactive contamination of milk ; Radioactive pollution
Additional Subjects ( Iodine 131 ; Metabolism) ; ( Cattle ; Food chains) ; ( Food chains ; Radionuclide kinetics) ; ( Milk ; Contamination) ; Biological variability ; Forage ; Ingestion ; Radioactive aerosols ; Radionuclide migration ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA EMSL-LV-539-1 Headquarters Library/Washington,DC 05/23/2018
ELBD ARCHIVE EPA EMSL-LV-539-1 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
NTIS  EMSL-LV-539-1 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation iii, 22 pages ; 28 cm
A dry aerosol, consisting of submicrometer diatomaceous earth particles tagged with exp 131 I, was released over two different types of growing forage (alfalfa and Sudan grass) at the Experimental Dairy Farm on the Nevada Test Site. Following deposition of the aerosol, the two forage types were chopped and fed to different groups of lactating dairy cows. The dual objectives of the study were to evaluate the relationship of exp 131 I secretion in milk to the ingestion of different types of contaminated forage and to obtain a further indication of the possible influence on milk radioiodine levels of changing the particle size of the contaminant. The ratios of the peak activity concentrations measured in the milk to the peak activity concentrations in the forage were computed to be 0.0145 for the cows fed contaminated alfalfa and 0.0082 for those fed contaminated Sudan grass. Comparison of the results from this study with those from earlier studies indicates the major effect on activity levels in the milk can be related to forage type. Ingestion of Sudan grass by the cow reduces the transfer of radioiodine to milk by one half compared to ingestion of alfalfa.
"EMSL-LV-539-1." "Published August 1975." Cover title. "This research was performed as a part of the Bioenvironmental Research Program under memorandum of understanding no. AT(26-1)-539 for the Energy Research and Development Administration." Includes bibliographical references.