Abstract
A radiochemical procedure is described for the determination of plutonium in large samples of sea water, sediments and organisms with a sensitivity of 0.004 d.p.m. per 100 1 of sea water (for a 50-1 sample), 0.02 d.p.m. per kg of sediments (100-g sample) and 0.002 d.p.m. per kg of marine organisms (1-kg sample). An iron (II) hydroxide coprecipitation method is used for the concentration of plutonium in sea water. A nitric-hydrochloric acid leaching method is adapted for the treatment of sediments and ashed organisms. Factors influencing the recovery, contamination and blank activity are discussed.
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