【作者】 董晓辉； 帅震清； 谢家理；

【Author】 Dong Xiao Hui、Shuai zhen Qing Xiejia li (Sichuan Monitoring Centre Station of Radiation Environmental Managenment,Chengdu 610031,China)

【机构】 四川省辐射环境管理监测中心站； 四川大学；

【摘要】 采用电感耦合等离子原子发射光谱方法测定浸取液中的钍元素含量。对仪器的工作参数和被测元素的分析谱线进行了优化和选择。研究浸出液的pH值、浸取时间、浸取液温度对钍浸出量的影响。随着浸泡时间的延长,钍的浸出值有增加,6小时达到平衡。浸取液的pH值越小,钍浸出量越大。浸出温度对钍浸出量的影响很小。精矿分离产生的废物属危险废物,因为具有较大的环境风险。更多还原

【Abstract】 ICP-AES and other means were applied to determination solid waste concentrations of soaking.Working condition of the instrument and choice of analytical spectral Lines for the elements were tested and optimized. A certain amount of solid wasted produced by Rare-earth industry was soaked in.tap water at different temperature and PH values.The release rate of Th in creased gradually along with the time of soaking and finally reached an equilibrium.The release rate of Th keeps no changing as the temperature in Creased. The results also suggest that the PH of soaking of Solid was minim,The release rate of Th in creased,solid waste produced by refined min separating treatment belong to risk waste and have a potential risk to the environment.更多还原