水中^(90)Sr测量的不确定度评定  

Evaluation of Detection Uncertainty of ^(90)Sr in Water

作　　者：杨秀玉[1] 张红英[1] 李庆光[1] 

机构地区：[1]中核四〇四有限公司,甘肃兰州732850

出　　处：《核电子学与探测技术》2016年第6期582-587,共6页Nuclear Electronics & Detection Technology

摘　　要：依据水中锶-90放射化学分析方法(GB 6766-1986),分析了水中^(90)Sr计算公式中的有关参数和分析过程中的影响因素,确定了水中^(90)Sr测量的不确定度分量,并对这些分量进行评定。给出水中^(90)Sr分析不确定度主要是由样品测量计数和仪器探测效率引入的,可以通过适度地增加测量时间来减小样品计数不确定度,但测量时间不宜超过24 h。：According to Radiochemical analysis of Strontium -90 in water （ GB 6766 - 1986）, the parameters of 90Sr ealeulation formula and the affecting factor in analysis process are analyzed in this paper; at last, we confirm and evaluate the relevant uncertainty components of Strontium -90 measurement in water. It gives that Detection Uncertainty of 90Sr in water mainly comes from the sample measurement count and the instrument de- tection efficiency. In order to reduce the sample measurement count uncertainty, we ean increase the measuring time appropriately, but it can not be longer than 24 hours.

关 键 词：90Sr 不确定度 水 

分 类 号：X830.3[环境科学与工程—环境工程]