ANALYTICAL METHOD FOR THE DETERMINATION OF CERIUM-144 IN VEGETATION, SEAWEED, FISH FLESH, AND NATURAL WATERS
Radio-ceriuun is co-precipitated on added carrier. After radiochemical purification, the Ce is precipitated as the oxalate and mounted on a counting tray. After growth to equilibrium of the daughter product Pr/sup 144/, the activity of this isotope is measured. The method is suitable for the determination of Ce/sup 141/ in area survey samples of vegetation, seaweed, and fish flesh, and also in natural waters. In the last type of sample several other isotopes may be determined on the same sample portion. The method is therefore particularly useful when the sample size is limited or when the concentrations of these isotopes are very low. Large samples (40 to 50 liters) can be handled without resorting to tedious evaporation techniques. Detection limits are governed by natural background radiation which is dependent upon local conditions. The method has been applied to samples containing 2 to 2000 mu mu c Ce/sup 144/ per sample portion. (auth)
- Research Organization:
- United Kingdom Atomic Energy Authority. Production Group, Risley, Lancs, England
- NSA Number:
- NSA-15-023451
- OSTI ID:
- 4035519
- Report Number(s):
- PG-Report-203
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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