| 于水,邹晓颖,赵法,等.贫铀气溶胶的理化特性研究[J].中华放射医学与防护杂志,2003,23(5):317-319.YU Shui,ZHOU Xiaoying,ZHAO Fa,et al.The research of physical and chemical properties of DU aerosol[J].Chin J Radiol Med Prot,2003,23(5):317-319 |
| 贫铀气溶胶的理化特性研究 |
| The research of physical and chemical properties of DU aerosol |
| 投稿时间：2002-04-03 |
| DOI： |
| 中文关键词: 贫铀 气溶胶 理化特性 贫铀溶解度 |
| 英文关键词:Depleted uranium Aerosol Physical and chemical properties DU solubility |
| 基金项目: |
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| 摘要点击次数: 3615 |
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| 中文摘要: |
| 目的研究贫铀(DU)模拟撞击产生气溶胶的理化特性。方法 将DU撞击燃烧,采样后分析气溶胶分散度、化学成分和核素组成,气溶胶在模拟肺液中的溶解度,以及气溶胶浓度的时间变化和空间分布。结果 DU气溶胶浓度在10min内降低到1/30。DU燃烧烟雾MMAD2次测定值为1.3和4.2μm。DU气溶胶浓度分布不均匀。DU氧化物中U(Ⅳ)含量接近55%,U(Ⅵ)含量约为45%。DU氧化物在模拟肺液中7d和30d的溶解度分别为24%,32%。DU气溶胶中放射性核素质量构成为238U(99.79%)、235U(0.21%)、234U(0.001%)。结论 DU撞击燃烧形成气溶胶粒子多数可吸入,燃烧烟雾扩散沉降较快,浓度随时间变化较大。撞击形成的氧化物为UO2、UO3和U3O8混合物。 |
| 英文摘要: |
| Objective To investigate the physical and chemical characteristics of depleted uranium (DU) aerosol formed by simulated impact. Methods After DU combusting,aerosol samples were collected,and the dispersity,oxide and isotopic component,solubility in simulated lung fluids,and changes in aerosol concentration with time and distance were analyzed. Results The concentration lowered to 1/30 within 10 min.The twice determined MMAD values of DU dust were 1.3 and 4.2 μm.The concentration distribution of DU dust in chamber wasn't uniform.The oxide was composed of 55% U(Ⅳ) and 45% U(Ⅵ).The solubility of DU oxides in simulated lung fluid was 24% and 32% after one week and one month,respectively. Conclusions Most of DUs impact combustion aerosol can be inhaled.The disperse/deposit tendency and the variation of DU aerosol with time in chamber are sharp.The oxide of DU has good solubility in simulated lung fluid. |
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