Autoradiographic Analysis of Plutonium Contamination on Pig Skin (II):Change with Contaminating Time of the State of Plutonium on the Skin, and its State after Decontamination

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The purpose of the present investigation was to extend the study on the plutonium skin contamination and decontamination which was reported in the first paper of this series. In this study, the preparation of the contaminated samples for autoradiography was carried out by frozen-dried method and the autoradiography was done by dipping method.<BR>Dispersed and aggregated plutonium were observed on the pig skin as contamination forms. The ratio of the aggregated to the total contamination increased with contaminating time.<BR>The residual contamination on the samples which were decontaminated by synthetic detergent involved almost aggregated plutonium, while by EDTA or sodium hypochlorite decontamination, the reverse happened.<BR>The percutaneous absorption through the intact skin was not found by shorter time contamination but it was observed through a broken stratum corneum by 60 min. contamination.
日本保健物理学会の論文