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本工作参照Johansen等人分离Fe,Co的优点,以阴离子交换和反相色层法有效地除去Cr,Fe,Co,Sc放射性核素的干扰、用国际标样验证了方法的可靠性。 仪器及试剂 γ—射线谱仪:仪器中子活化分析,测量系统是由一个70cm~3同轴Ge(Li)探测器,对~(60)Co1332KeV峰的分辨率为3.5KeV,峰康比为20∶1和一台Laben—4096多道分析器组成,放化中子活化分析,测量系统是由一个130cm~3,CANBERRA同轴Ge(Li)探测器,对~(60)Co 1332KeV峰的分辨率为1.9KeV和一台SCORPIO—3000多道计算机组成,对~(60)Co 1332KeV峰的峰康比为48∶1,相对探测效率为30％,两台谱仪系统刻度每道为0.5KeV。
According to the advantages of separation of Fe and Co by Johansen et al., The interference of Cr, Fe, Co and Sc radionuclides is effectively eliminated by anion exchange and reversed-phase color layer method. The reliability of the method is verified by international standard samples. Instruments and reagents γ-ray spectrometer: instrument neutron activation analysis, the measurement system is a 70cm ~ 3 coaxial Ge (Li) detector, the resolution of ~ (60) Co1332KeV peak 3.5KeV, peak Kang than 20: 1 and a Laben-4096 multichannel analyzers, the radioactive neutron activation analysis, the measurement system is a 130cm ~ 3, CANBERRA coaxial Ge (Li) detector, ~ (60) Co 1332KeV peak A resolution of 1.9 KeV and a SCORPIO-3000 multi-channel computer, the peak-to- peak ratio of ~ (60) Co 1332KeV peak was 48: 1 with a relative detection efficiency of 30%, with two spectrometer system calibrations of 0.5 KeV.