【摘要】 本文介绍用无机离子吸附剂CuFC-SiO₂从海水中浓集¹³⁷Cs,然后用r能谱仪测定海水中¹³⁷Cs活度的简易分析测定方法。研究了过柱海水速度和海水中¹³⁷Cs活度变化时吸附剂对海水中¹³⁷Cs吸附效率的影响,探讨最佳过柱速度和吸附效率。本方法与磷钼酸铵-碘铋酸铯-β计数法有良好可比性。方法准确,简便,安全且易于掌握。更多还原

【Abstract】 In this paper a convenient method for analyzing and measuring the activity of 137Cs in sea-water is described. First, using inorganic ionic exchanger CuFC-SiO2 to concentrate 137Cs from seawater, then measuring the activity of 137Cs directly using gamma spectrometry. Analysis and discussion of the effect of the column passing speed and the fluctuation of the activity of 137Cs in seawater on the adsorption efficiency of 137Cs are put forward. And a method for deciding the optimum column passing speed and adsorption efficiency is suggested. The comparison of the results of this method to that of ammonium phosphomolybdate (AMP)-Cesium-Iodibismu-thate-Beta counting method shows that these two analytical methods are rather comparable. The method suggested in this paper has the advantage of accuracy, convenience, safe and easy operation.更多还原