腐殖酸和土壤对贫铀在水中溶解性能的影响  

Effect of humic acid and soil on the dissolution nerformance of denleted uranium in water

作　　者：崔晓磊[1] 郭志英[1] 梁月琴[1] 于水[1] 

机构地区：[1]军事医学科学院生物医学分析中心,北京100850

出　　处：《中华放射医学与防护杂志》2013年第1期76-79,共4页Chinese Journal of Radiological Medicine and Protection

摘　　要：目的研究腐殖酸和土壤对贫铀在水中溶解性能的影响。方法采用静态溶解一吸附实验法和电感耦合等离子体质谱技术，测定不同时间点所取样品中铀浓度和。^235U／^238 U同位素比值，研究贫铀的溶解规律。结果腐殖酸能使贫铀在水中的溶解度降低约90％。土壤能使贫铀在水中的溶解度提高近25％，在土壤中加入一定量的腐殖酸能起到辅助贫铀溶解的作用，而加入5％含量腐殖酸组的效果最佳。结论土壤和腐殖酸对贫铀在水中的溶解性能分别产生正向和负向影响，两者共同存在的效果是二者与溶解出的铀离子发生复杂的吸附和络合反应的综合结果。Objective To study the effect of humic acid （HA） and soil on dissolution performance of depleted uranium （DU）. Methods Using the static dissolve-adsorption experiment and inductively coupled plasma-mass spectrometry（ICP-MS） to determine uranium concentration and ^235U/^238U isotope ratios of the samples at different time and study the dissolution of DU in water. Results The solubility of DU in water was reduced by 90% by adding HA. Soil could increase the solubility of DU in water by nearly 25% , adding an appropriate amount of HA could play a supporting role on the dissolution of DU, in this experiment adding 5% of HA was best. Conclusions Soil and HA could produce positive and negative impact on the solubility of DU in water, and the combined effect of the two relied on the complex absorption and complexation reactions of soil, HA and dissolved uranium ions.

关 键 词：贫铀 腐殖酸 静态吸附 电感耦合等离子体质谱 溶解性能 

分 类 号：R14[医药卫生—公共卫生与预防医学]