Extraction of thorium,uranium and cerium from fresh water using manganese dioxide coprecipitation |
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| Authors: | J. M. Wang R. Ballad P. Grimaldi W. Lei |
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| Affiliation: | (1) North China Institute of Radiation Protection, Taiyuan, Shanxi, People's Republic of China;(2) Institute of Environmental Medicine, New York University Medical Center, 550 First Avenue, 10016 New York, N. Y., USA |
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| Abstract: | A manganese dioxide coprecipitation procedure is utilized to replace a time-consuming evaporation step for the extraction of thorium, uranium and cerium from freshwater samples. The average recovery for 20-liter samples is greater than 95% for234Th and144Ce. The data indicate that the manganese dioxide coprecipitation process does not affect the recovery of thorium and uranium during our routine analytical procedure. |
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