REFERENCES (i) STUDIER, M., POSTMUS, H. C. Jr., MECH, J., WALTERS, &. R., SLOTH, EF. N., The use of 129: as an isotopic tracer and its determination along with noraal 127; by neutron activation=-cthe isolation of iodine from a variety of materials, J. Inorg. Nucl. Chem. 24 (1962) 755. (2) BRAUER, F. P., SOLDAT, J. D., TENNY, H., STRESIN, R. S., Jr., Natural Lo- dine and Icdine-129 in Mammalian Thyroids and Environmental Samples Taken from Locations in the United States: nvironmental Surveillance Around Nu- clear Installations II, IAEA-SM-!180/34 (1974) 43. (3) XEISCH, B., KOCH, R. C., LEVINE, A. L., Determination of biospheris levels o¢ 129 by meutron-Activation Analysis, Modern Trends in Activation Analzsis, Texas A&M University, College Station Texas, (1965) 284. SOLDAT, J. K., et al., The Radioecology of Lodine-129, Battelle, Pacific Northwest Laboratories Rep. BNWL-1783 (1973). EDWARDS, 2. R., Iodine-!29: its occurrence a tracer, Science, 137 (1962) 851. R. R., in nature and its utility as XOBMAN, T. P., EDWARDS, Iodine~1l29 as a Geochemical and Ecological KOHMAN, T. P., Nuclear Chemistry and Geochemistry Research, Carnegie insti- Tracer, Carnegie Institute of Technology Rep. N¥0-3624-! (1966). tute of Technology Rep. NY0-844-71 (1967). (8) (9) (10) EDWARDS, R. R., REY, P., Terrestrial Occurrence and Distribution of lo- dine-129, Carnegie Institute of Technology Rep. NY0~3624-3 (1969). BRAUER, F. P., TENNY, H., /*9r analysis Methodology, Battelle, Pacific Northwest Laboratories Rep. BNWL-SA~5287 (1975). BRAUER, F. P., KAYE, J. H., Detection Svstems for the Low-Level Radiochemical Analysis of Yodine-131, Lodine-129 and Nacural Iodine in En- vironmental Samples (IEEE Trans. on Nucl. Sci. 1974) NS-21 (1974) 446. C11) NICHOLSON, W. L., SCHLOSSER, J. E., BRAUER, F. P., The quantitative anal- ysis of sets of multicomponent time dependence spectra from decay of radionuclides, Nuclear Instr. Methods 25 (1963) 45. (12) MANUEL, 0. K., Iodine-129, A Study of its Transport in the Environment and (13) BOULOS, M. S., BECKER, V. J., MANUEL, 0. K., Distribution in Biological Systems, U.S. ERDA Report C00-2450-5 (1977). 10 oot Wealth Physics 24 (1973) 375. TIodine-129 in thyroid glands,

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