"Mass spectrometric analysis of the xenon isotopes in natural gas wells demonstrates that radioactive isotopes of element number 53 (I) and element number 94 (Pu) were present at the time of the Earth's formation. Evidence for the now extinct nuclide129I (t1/2 = 17 x 106 years) was found in CO₂ -rich gas while evidence for the now extinct 244Pu (t1/2 = 82 x 106 years) was discovered in other natural gas wells. The amounts of 129I in thyroids was measured by combining neutron activation analysis with noble gas mass spectrometry. The current mammalian thyroid glands contain iodine with an isotopic composition 129I:127I ≈ 1 x 10-8:1.0"--Abstract, page iii.
Manuel, O. (Oliver), 1936-
McDonald, H. O. (Hector O.)
Webb, William H.
Hardtke, Fred C.
Ph. D. in Chemistry
National Science Foundation (U.S.)
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- The xenon record of extinct radioactivities in the earth
- Extinct radioactive nuclides and production of xenon isotopes in natural gas
- Iodine-129 in thyroid glands
vii, 74 pages
© 1972 Mervet Saleh Boulos, All rights reserved.
Dissertation - Open Access
Xenon -- Isotopes -- Spectra
Iodine in the body
Print OCLC #
Electronic OCLC #
Link to Catalog Record
Boulos, Mervet S., "The utilization of high sensitivity noble gas mass spectrometry in the detection of iodine-129 and plutonium-244" (1972). Doctoral Dissertations. 1862.