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Target Concepts:
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Query: UMLS:C0268318 (
ICP
)
10,007
document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)
The determination of uranium isotope ratios in individual particles is of great importance for nuclear safeguards. In the present study, an analytical technique by inductively coupled plasma mass spectrometry (ICP-MS) with a desolvation sample introduction system was applied to isotope ratio analysis of individual uranium particles. In
ICP
-MS analysis of individual uranium particles with diameters ranging from 0.6 to 4.2 microm in a standard reference material (
NBL
CRM U050), the use of the desolvation system for sample introduction improved the precision of (234)U/(238)U and (236)U/(238)U isotope ratios. The performance of
ICP
-MS with desolvation was compared with that of a conventionally used method, i.e., secondary ion mass spectrometry (SIMS). The analysis of test swipe samples taken at nuclear facilities implied that the performance of
ICP
-MS with desolvation was superior to that of SIMS in a viewpoint of accuracy, because the problems of agglomeration of uranium particles and molecular ion interferences by other elements could be avoided. These results indicated that
ICP
-MS with desolvation has an enough ability to become an effective tool for nuclear safeguards.
...
PMID:Comparison of ICP-MS and SIMS techniques for determining uranium isotope ratios in individual particles. 1917 40
Information on plutonium isotope ratios in individual particles is of great importance for nuclear safeguards, nuclear forensics and so on. Although secondary ion mass spectrometry (SIMS) is successfully utilized for the analysis of individual uranium particles, the isobaric interference of americium-241 to plutonium-241 makes difficult to obtain accurate isotope ratios in individual plutonium particles. In the present work, an analytical technique by a combination of chemical separation and inductively coupled plasma mass spectrometry (ICP-MS) is developed and applied to isotope ratio analysis of individual sub-micrometer plutonium particles. The
ICP
-MS results for individual plutonium particles prepared from a standard reference material (
NBL
SRM-947) indicate that the use of a desolvation system for sample introduction improves the precision of isotope ratios. In addition, the accuracy of the (241)Pu/(239)Pu isotope ratio is much improved, owing to the chemical separation of plutonium and americium. In conclusion, the performance of the proposed
ICP
-MS technique is sufficient for the analysis of individual plutonium particles.
...
PMID:Isotope ratio analysis of individual sub-micrometer plutonium particles with inductively coupled plasma mass spectrometry. 2111 Nov 76
This paper describes rapid methods for the determination of the production date (age dating) of plutonium (Pu) materials by inductively coupled plasma mass spectrometry (ICP-MS) for nuclear forensic and safeguards purposes. One of the presented methods is a rapid, direct measurement without chemical separation using
235
U/
239
Pu and
236
U/
240
Pu chronometers. The other method comprises a straightforward extraction chromatographic separation, followed by
ICP
-MS measurement for the
234
U/
238
Pu,
235
U/
239
Pu,
236
U/
240
Pu and
238
U/
242
Pu chronometers. Age dating results of two plutonium certified reference materials (SRM 946 and 947, currently distributed as
NBL
CRM 136 and 137) are in good agreement with the archive purification dates.
...
PMID:Plutonium age dating (production date measurement) by inductively coupled plasma mass spectrometry. 2700 57
