【摘要】 报道了一种快速分离和测定水中¹⁴⁷Pm的方法。该法采用HDEHP-KeL-F色层柱分步淋洗,液闪萃取剂萃取,使¹⁴⁷Pm与其他放射性核素分离,然后用液体闪烁计数器测量,得如下结果:¹⁴⁷Pm的化学回收率为88.5±1.1％,放射性Sr,Y,Cs,Ru,Zr,Nb的净化系数DF可达10³以上,放射性Eu的DF为10²,放射性Ce的DF≈10,¹⁴⁷Pm的检测限为0.08Bq。更多还原

【Abstract】 A method for the quickseparation and determination of 147Pm in water is reported. Samples of water are separated by stepwise elution with HDEHP-KeL-F chromatographic technique and extraction with lipuid-scintillatibn extractant. 147Pm is separated from other radionuclides and is determined by liquid scintillation counter. The recovery rate for 147Pm is 88. 5+1. 1%. The DF for radioactive Sr, Y,Cs,Ru,Zr and Nb is above 103,that for radioactive Eu is 102,and that for 144Ce is about 10. The lower limit of detection for 147Pm is 0. 08Bq.更多还原