第４５卷第４期核化学与放射化学Vol４５No４２０２３年８月JournalofNuclearandRadiochemistryAug．２０２３收稿日期:２０２２Ｇ０３Ｇ３１;修订日期:２０２２Ｇ０５Ｇ２２∗通信联系人:丁有钱９４,９５Sr快化分离方法的研究崔春盛,丁有钱∗,王秀凤,白龙,周子钧中国原子能科学研究院放射化学研究所,北京１０２４１３摘要:为精确测量９４,９５Sr的衰变数据,需制备出高活度、高纯度的９４,９５Sr样品.为去除或降低裂变产物体系中放射性Sr的其他同位素,在分析相关衰变链的各核素的累积产额和半衰期基础上采用了“短照快分”的分离模式,并以P２０４萃取色层快速提取和SrＧSpec萃取色层快速纯化相结合为手段,建立了快速分离９４,９５Sr的化学流程,研制了模块化快速化学分离装置.总操作时间不超过６０s,验证整个流程的化学回收率为４０％,对主要干扰核素的去污因子均可达１０２以上,满足衰变数据测量的要求.关键词:９４Sr;９５Sr;快化分离装置;萃取色层法中图分类号:O６５７．４文献标志码:A文章编号:０２５３Ｇ９９５０(２０２３)０４Ｇ０３１６Ｇ０７doi:１０．７５３８/hhx．２０２３．YX．２０２２０２１RapidSeparationof９４,９５SrCUIChunＧsheng,DINGYouＧqian∗,WANGXiuＧfeng,BAILong,ZHOUZiＧjunChinaInstituteofAtomicEnergy,P．O．Box２７５(１２６),Beijing１０２４１３,ChinaAbstract:Inordertoaccuratelymeasurethedecaydataof９４,９５Sr,itisnecessarytoprepare９４,９５Srsampleswithhighactivityandhighpurity．ToremoveorreduceotherradioactiveisoＧtopesofstrontiuminthefissionproductsystem,basedontheanalysisofthecumulativeyieldandhalfＧlifeofeachnuclideintherelevantdecaychain,theseparationmodeof“ShortＧtimeirradiationandrapidseparation”isadopted,andthechemicalprocessforrapidseparaＧtionof９４,９５SrisestablishedbycombiningtherapidextractionofP２０４extractionchromatogＧraphywiththerapidpurificationofSrＧSpecextractionchromatography,amodularrapidchemicalseparationdeviceisdeveloped．Thetotaloperationtimeofthedeviceisnomorethan６０s,thechemicalrecoveryrateis４０％,andthedecontaminationfactorforthemaininterferingnuclidescanreachmorethan１０２,meetingtherequirementsofdecaydatameasurement．Keywords:９４Sr;９５Sr;rapidseparationdevice;extractionchromatographic９...
