Abstract:
DETERMINATIONOFIMPURITIES156Euand155EuFROM153SmWITHRADIOACTIVITYMETERJiangJinling(NationalInstituteofTheControlofPharmaceuticalandBiologicalProducts,Beijing100050)ABSTRACTThemethodofradioactive-decayseparationandradioactive-rayabsorptionseparationisusedtodeterminethemicro-nuclearimpurities156Euand155Eufromthe153Smusingradioac-tivitymeter.Theseresultsareinagreementwithintherangeof±7%withtheresultsmea-suredbymultichannelanalyzerofthegammaspectrometry.Thismethodboastsofsimplee-quipmentandprocedure,andextensiveapplication.Keywordsradioactivitymeternuclearimpuritydecayseparationabsorptionsepa-ration153Sm156Eu155Eu