摘要
利用电感耦合等离子体质谱(ICP-MS)技术,对某铀模拟试验舱周围的土壤进行了土壤铀浓度和铀同位素比值的测定。采集试验舱周围不同距离和不同深度土样,测量其中铀浓度以及铀同位素比值。监测结果显示,试验舱周围50 m内为贫铀(DU)污染的主要影响区域,DU垂直迁移深度可达25 cm。另外,试验结果显示ICP-MS技术可以快速测定贫铀浓度及其同位素比值,从而有助于确定污染源项。
The depleted uranium （DU） concentrations and uranium isotope ratios in soils around certain uranium simulation test cabin were detennined, using inductively coupled plasma mass spectrometry （ICP-MS） technique. The results of uranium concentrations and 235 U/23SU ratios in soil samples collected at different dis- tances and different depths show that main contaminated area is within 50 m around uranium simulation test cabin; DU contamination depth can reach 25 cm within 10 years, so DU mitigation in soil is slow and the depth is limited. Experiments show ICP-MS technique can rapidly determine DU concentrations and isotope ratios, consequently confirm pollution source.
出处
《辐射防护》
CAS
CSCD
北大核心
2008年第5期292-295,300,共5页
Radiation Protection
基金
国家自然科学基金资助项目(40473056)
