摘要
磷酸三丁酯/煤油废液(TBP/OK)废液中锶-90的分析方法是废液处理过程中必须的检验项目。通过条件实验,确定了TBP与OK进行蒸发分离温度,不同温度条件下依次使用硫酸、硝酸、过氧化氢、高氯酸对样品进行湿法消解,消解后样品用HDEHP萃取色层法分离并用β计数法准确测量。讨论了分析过程中干扰因素消除方法,开展了方法的回收率、方法的探测限试验及实验室间比对试验,结果表面方法重复性和精密性满足要求,适用于TBP/OK废液样品中锶-90的分析。
The analysis method of strontium-90 in tributyl phosphate/kerosene waste liquid(TBP/OK)waste liquid is a necessary inspection item in the waste liquid treatment process.Through conditional experiments,the evaporative separation temperature of TBP and OK was determined,the samples were wet digested by sulfuric acid,nitric acid,hydrogen peroxide and perchloric acid under different temperature conditions,and the samples were separated by HDEHP extraction color layer method and accurately measured byβcounting method.The method of eliminating interference factors in the analysis process was discussed,the recovery rate of the method,the detection limit test of the method and the inter-laboratory comparison test were carried out,and the repeatability and precision of the surface method met the requirements,which was suitable for the analysis of strontium-90 in TBP/OK waste liquid samples.
作者
冯双喜
王文龙
庄旭洲
FENG Shuang-xi;WANG Wen-long;ZHUANG Xu-zhou(CNNC Sichuan Environmental and Protection Engineering Co.,Ltd.,Sichuan Guangyuan 628000,China)
出处
《广州化工》
CAS
2024年第11期86-89,共4页
GuangZhou Chemical Industry
