摘要
提出了TOPO萃取,大面积有机相制源与平行板屏栅电离室α谱仪结合,测定草、土壤等环境中钚的新方法。土壤和草灰的化学回收率分别为72％和97％,最低探测限为4×10^(-2)Bq/kg。分析了I-AEA和NIST的标准物质,结果与标准值相符。操作程序简单、快速,适用于核事故应急分析和环境监测。
A new way for the determination of plutonium in environment is provided, in which TOPO extraction with parallel grid ionization chamber spectrometer is used to determine 239,240pu and 238Pu in soil and grass ash. The chemical recoveries for them are 72% and 97% respectively. The good agreement is obtained for analysis of standard reference materials of IAEA and NIST. The detection limit of this method is 4×10-2Bq/kg(solid). It is a simple and quick method for environment monitor and emergency nuclear accident analysis.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
1993年第4期203-208,共6页
Journal of Nuclear and Radiochemistry
基金
IAEA研究合同项目
关键词
三正辛基氧膦
萃取
钚
环境监测
TOPO Extraction Parallel grid ionization chamber Pu Environment
