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  • 1
    Electronic Resource
    Electronic Resource
    On the Use of ICP-MS for Measuring Plutonium in Urine (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 243 (2000), S. 397-401 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The analytical protocols currently used to measure plutonium in urinary excretion consist of radiochemical purification, the source preparation by electroplating and alpha spectrometry measurements. Such a procedure is of limited relevance to the individual monitoring of workers exposed to plutonium and mixed oxides. The use of ICP-MS, which takes much shorter counting time, was investigated with the aim of assessing the capabilities of this analytical tool for the determination of urinary excretion of plutonium. It has been shown that the detection level of 1 mBq·1-1 could be achieved after a radiochemical purification process for a standard ICP-MS set-up.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1016013811974
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Investigation of U(VI) extraction with calixarene: Application to analysis of urine sample (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 226 (1997), S. 261-265 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract A macrocyclic molecule, the calix[6]arene 46, functionalized with carboxy groups, has been studied and its extraction efficiency towards uranium determined in a two phases solvent-extraction system. Two solvents, dichloromethane and benzene were used to follow uranium extraction from media containing sodium ions. The study of the extraction parameters allowed proposing an extraction scheme with each solvent. The extraction efficiency was found to increase with pH, with an optimal efficiency of nearly 100%. No decrease of uranium extraction was observed in synthetic solutions containing sodium ions (spiked with22Na) and/or239Pu. Under specific conditions, almost 100% of uranium have been extracted by the calixarene from real urine samples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02063658
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Perspectives of uranium and plutonium analysis in urine samples by secondary ion mass spectrometry (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 226 (1997), S. 41-45 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Secondary ion mass spectrometry (SIMS) is a well-established technique that permits rapid detection of stable and radioactive nuclides. Its resolving mass power provides an efficient analytical method and, in particular, it makes possible accurate isotopic ratio determination. Tests were carried out to evaluate the performance of this technique for the assessment of trace concentrations of uranium and plutonium in urine samples prepared in thin sources. Special attention has been paid to the preparation of the specimens which represents a critical step for the employment of this technique due to the erosion process used by SIMS. Fixation of the matrix in Polypyrrole films have been proved to be suitable. Present results show that concentrations in the order of 10−10 g·1−1 of238U (10−6 Bq·1−1) and 10−11 g·1−1 of239Pu (10−2 Bq·1−1) can be rapidly measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02063622
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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