【摘要】 本文介绍一种快速监测钍废水中放射性核素浓度的方法。该法简单,其具体步骤是将一定大小的织纤布浸泡于废水中,搅动一定时间后取出,冲洗并烘干,即可直接测量。在一小时或更短的时间内便可得到结果。实验发现4号布对钍系有选择性吸附的能力。当废水中所含放射性核素以钍系为主时,所得实验结果与放化分析结果相差大约为10%,对含有少量铀的钍废水监测下限为10^-11居里/升。更多还原

【Abstract】 A rapid method for monitoring a radioactivity,Th-series,in the bearing Th waste water is described.A regular size of fabric is immer-ged in the waste water for a fixed time and stirred simultaneously.Then,take out the fibre from the waste water,flush it with distilled water androast it until it is dry.The fibre sample treated can be measured directly.It takes about an hour or less to complete a experiment.In the experimen-ts it is found that the fibre 4 possesses an ability for selecting Th from thewaste water containing U and Th.when the main nuclide in the waste wateris the thorium series,the diffrence of data in this experiment and in radio-chemistry analysis is about 10%,and the detective limit is 10^-11 Ci/l.更多还原