Abstract
In order to search for isotopic anomalies of U caused by the disintegration of 247Cm in meteorite samples, an analytical scheme for determining 235U/238U ratio for a small amount of uranium (less than 1 ng U) was established. The isotopic ratio of U was determined by double-focusing inductively coupled plasma mass spectrometry (DF-ICP-MS). With a great improvement of chemical procedure for purifying the uranium fraction separated from meteorite samples, a variation in 235U/238U ratios was resolved at an order of ±4‰ for 100 ppt or 200 pg U in solution. For applying the procedure in searching an evidence of 247Cm as an extinct radionuclide in the early solar system, a selective chemical dissolution of constituent minerals of meteorites using EDTA and HCl was introduced and a chemical purification scheme of uranium for ICP-MS was established.
| Original language | English |
|---|---|
| Pages (from-to) | 397-401 |
| Number of pages | 5 |
| Journal | Journal of Radioanalytical and Nuclear Chemistry |
| Volume | 272 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2007 May 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Analytical Chemistry
- Nuclear Energy and Engineering
- Radiology Nuclear Medicine and imaging
- Pollution
- Spectroscopy
- Public Health, Environmental and Occupational Health
- Health, Toxicology and Mutagenesis
Cite this
An attempt for determining 235U/238U ratio for a trace amount of uranium : Search for an extinct radionuclide 247Cm in the early solar system. / Chai, J. Y.; Miyamoto, Y.; Kokubu, Y.; Magara, M.; Sakurai, S.; Usuda, S.; Oura, Y.; Ebihara, Mitsuru.
In: Journal of Radioanalytical and Nuclear Chemistry, Vol. 272, No. 2, 01.05.2007, p. 397-401.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An attempt for determining 235U/238U ratio for a trace amount of uranium
T2 - Search for an extinct radionuclide 247Cm in the early solar system
AU - Chai, J. Y.
AU - Miyamoto, Y.
AU - Kokubu, Y.
AU - Magara, M.
AU - Sakurai, S.
AU - Usuda, S.
AU - Oura, Y.
AU - Ebihara, Mitsuru
PY - 2007/5/1
Y1 - 2007/5/1
N2 - In order to search for isotopic anomalies of U caused by the disintegration of 247Cm in meteorite samples, an analytical scheme for determining 235U/238U ratio for a small amount of uranium (less than 1 ng U) was established. The isotopic ratio of U was determined by double-focusing inductively coupled plasma mass spectrometry (DF-ICP-MS). With a great improvement of chemical procedure for purifying the uranium fraction separated from meteorite samples, a variation in 235U/238U ratios was resolved at an order of ±4‰ for 100 ppt or 200 pg U in solution. For applying the procedure in searching an evidence of 247Cm as an extinct radionuclide in the early solar system, a selective chemical dissolution of constituent minerals of meteorites using EDTA and HCl was introduced and a chemical purification scheme of uranium for ICP-MS was established.
AB - In order to search for isotopic anomalies of U caused by the disintegration of 247Cm in meteorite samples, an analytical scheme for determining 235U/238U ratio for a small amount of uranium (less than 1 ng U) was established. The isotopic ratio of U was determined by double-focusing inductively coupled plasma mass spectrometry (DF-ICP-MS). With a great improvement of chemical procedure for purifying the uranium fraction separated from meteorite samples, a variation in 235U/238U ratios was resolved at an order of ±4‰ for 100 ppt or 200 pg U in solution. For applying the procedure in searching an evidence of 247Cm as an extinct radionuclide in the early solar system, a selective chemical dissolution of constituent minerals of meteorites using EDTA and HCl was introduced and a chemical purification scheme of uranium for ICP-MS was established.
UR - http://www.scopus.com/inward/record.url?scp=34047111216&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34047111216&partnerID=8YFLogxK
U2 - 10.1007/s10967-007-0535-0
DO - 10.1007/s10967-007-0535-0
M3 - Article
AN - SCOPUS:34047111216
VL - 272
SP - 397
EP - 401
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
SN - 0022-4081
IS - 2
ER -