Doctoral Dissertations

Abstract

"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.

Advisor(s)

Manuel, O. (Oliver), 1936-

Committee Member(s)

McDonald, H. O. (Hector O.)
Webb, William H.
Hardtke, Fred C.
Bolter, Ernst

Department(s)

Chemistry

Degree Name

Ph. D. in Chemistry

Sponsor(s)

National Science Foundation (U.S.)

Comments

The Former Mervet Maurice Saleh -- Title page

Publisher

University of Missouri--Rolla

Publication Date

1972

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

Pagination

vii, 74 pages

Note about bibliography

Includes bibliographical references.

Rights

© 1972 Mervet Saleh Boulos, All rights reserved.

Document Type

Dissertation - Open Access

File Type

text

Language

English

Subject Headings

Xenon -- Isotopes -- SpectraThyroid glandIodine in the bodyRadioisotopesGases, Rare

Thesis Number

T 2636

Print OCLC #

6038999

Electronic OCLC #

878395737

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