Detection of iodine-129 by laser-induced fluorescence spectrometry
Isotopically specific fluorescence detection of elemental iodine-129 has been investigated with a broad-band dye laser system. The intracavity spoiling phenomenon was utilized in this investigation to achieve isotopic specificity and to effect a modulated fluorescence signal. This rugged laser-based analytical system was found to exhibit a conventional linear relationship between signal level and analyte concentration, although laser-based instabilities limited detection limits of this approach to concentrations greater than 10/sup 10/ molecules/cm/sup 3/. Fluorescence measurements were also accomplished by direct single frequency excitation of /sup 129/I/sub 2/. This method of excitation exhibited a fluorescence detection limit of 2 x 10/sup 9/ molecules/cm/sup 3/ and proved to be more sensitive than the broad-band approach.
- Research Organization:
- Pacific Northwest Lab., Richland, WA
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6508272
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 53:6; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400104* -- Spectral Procedures-- (-1987)
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DYE LASERS
EMISSION SPECTROSCOPY
FLUORESCENCE SPECTROSCOPY
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IODINE 129
IODINE ISOTOPES
ISOTOPES
LASER SPECTROSCOPY
LASERS
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
SENSITIVITY
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES