Selection radionuclides

Johnston, H.M. Gillham, R.W. "A Review of Selected Radionuclide Distribution Coefficients of Geologic Materials" TR-90 Atomic Energy of Canada Ltd Univ. of Waterloo, 1980. 

Quality assurance of radiopharmaceutical preparation and use is obviously a very important topic because of its direct impact on patient diagnosis, treatment and health (see, e.g. Abreu 1996). Reference materials play only a small - but nevertheless important -role in this process, mainly in the area of calibration of radioactivity-measuring instruments. The materials of interest are all pure chemical containing calibrated activities of selected radionuclides used commonly in nuclear medicine (e.g. Co, Ga, I,... 

Selected radionuclide levels in air were measured at Bragin, 55 km north of Chernobyl from April 28,... 

NEA. 1988. Gastrointestinal absorption of selected radionuclides. Paris Nuclear Energy Agency. 

Selected radionuclides symbol, mass number, atomic number, half-life, and decay mode... 

Time required to transport selected radionuclides added into marine waters at surface from the upper mixed layer by biological transport... 

Table 32.1 Selected Radionuclides Symbol, Mass Number, Atomic Number, Half-Life, and Decay Mode...

Table 32.12 Time Required to Transport Selected Radionuclides Added into Marine Waters at Surface out of the Upper Mixed Layer by Biological Transport (Processes include diurnal vertical migration, fecal pellets, and sinking of dead matter.)...

Various species, bioconcentration factors (BCF) of selected radionuclides Co... 

Sr, caribou, muscle vs. bone Various species, biological half-life of selected radionuclides 241 Am BCF of 0.02 vs. 7.0 24... 

Various species, biological half-life of selected radionuclides 2 Am ... 

Some extractants have been used in the development of selective sensors for radionuclides. These have been noted in Tables 9.1 through 9.3 and briefly mentioned above. They were recently reviewed in detail.99 In addition to column sensor formats, extractants have been coated onto passivated ion-implanted planar silicon (PIPS) diodes to create selective radionuclide sensors.152153 Though not a focus of this review, it is worth noting the such sensors, combining separation and detection in a single functional unit, have potential for use in process-monitoring applications. 

Classification Using Pre-Established Limiting Concentrations and Enhanced Access. The same process as in the previous calculation was used to screen this example waste under conditions where intruder access to the waste would be enhanced. For example, if the cover for the waste is less than 2 m, it would be appropriate to consider that an intruder would remove sufficient cover material to expose the waste. The maximum allowable concentrations of selected radionuclides for this scenario calculated using the RESRAD code are listed in Table 7.3. The analysis assumes that the intruder is exposed via external exposure, ingestion, and inhalation for a period of 1,000 h. Using the sum of the ratios of the radionuclide concentrations in the waste to the maximum allowable concentrations as a... 

Salter, P. F. Ames, L. L. The Sorption Behavior of Selected Radionuclides on Columbia River Basalts, RHO-BWI-LD-48, Rockwell Hanford Operations, Richland, Washington, 1981. 

Table 7-14. Ranges of soil-to-plant transfer factors for selected radionuclides (source IUR, 1989).

Aarkog, A. (1988) Worldwide data on fluxes on 239.24 pu and 238Pu to the oceans. In Inventories of Selected Radionuclides in the Ocean. IAEA-TECDOC-481, pp. 103-138. 

B.S. Jensen, Complex Formation of Selected Radionuclides with Ligands Commonly Found in Groundwater Low Molecular Organic Acid., CEC. 

TABLE 2 Selected Radionuclides and Radiopharniaceuticals Used for Radiotherapy in Routine Use or as Part of Clinical Investigations... 

Results of experiments conducted to investigate HNO3 desorption of tracer amounts of selected radionuclides sorbed on the various inorganic ion exchangers are presented in Table IV. 

TABLE 13.7 The radioactivity of selected radionuclides in spent fueF as a function of fuel age after removal from the reactor in curies per metric ton of initial heavy metal (Ci/MTIHM)... 

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