摘要
为了对核设施及周边环境的放射性污染水平进行有效监测,需要对大量土壤样品中的90 Sr进行分析。本工作以对锶有特效选择性的Sr.Spec树脂为主要分离纯化材料,结合浸取或全溶解预处理、草酸盐沉淀以及时间校准法与双标记法液闪测量,建立了快速分析土壤样品中90Sr的方法。全流程对Sr的化学回收率约为60%,分析时间小于6h,方法的最小可探测比活度为8Bq/kg。
9OSr in many soil samples should be analyzed, so that radioactive pollution level in nuclear facilities and its surrounding environment can be surveyed efficiently. In this paper, a rapid radioanalytical method of 90 Sr in soils was developed. The main procedures consist of pretreatment, oxalate precipitation, Sr Spec resin chromatographic separation, and radioactivity determination by time correction or dual labeling method using liquid scintillation spectrometry. Typically, a sample can be analyzed in 6 h. The chemical yield is about 60%, and the minimum detectable activity by this technique is about 8 Bq/kg.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2013年第1期14-18,共5页
Journal of Nuclear and Radiochemistry
