摘要
目的 进一步研究在事故状态下，氧化钚放射性微粒的扩散特征和粒度特征及其吸入危险性。方法 使用优异的放射自显影技术来分析放射性气溶胶在事故现场的扩散和粒径大小，以及可吸入的组分。结果 一共分析了两万多个氧化钚微粒，是以亚微米的微粒为主的放射性粒子群，并不服从对数正态分布，且有明显的双峰现象。结论钚氧化物极易扩散，污染环境，且具有严重的吸入危害。
Objective In the accident conditions, the radioactive particle size and diffusion characteristics and its inhalation risk of plutonium dioxide were further investigated. Methods Using the excellent radioautography technigue, the diffusion, particle size and inhalable fraction of radioactive plutonium aerosols in the accident site were analyzed. Results More than twenty thousands particles of plutonium dioxide were at all analyzed, these particles were mainly submicron small particles groups and don't subordinated to the log-normal distribution, and displayed obvious double-peak phenomena. Conclusion The plutonium dioxide was easy diffused and contaminated the around environment and have havey inhalation risk.
出处
《职业卫生与应急救援》
2001年第4期171-173,共3页
Occupational Health and Emergency Rescue
基金
核工业事故科研基金(77-01)资助。
关键词
二氧化钚
扩散
粒度
吸入危害
Plutonium dioxide, Diffusion, Particle size, Inhalation risk
