牛奶中放射性锶的分析方法及其年有效剂量估算  

Methodology for Determination of Radiostrontium in Milk and Estimation of Annual Effective Dose

作　　者：吴连生[1] 杨立涛[1] 曾帆[1] 张兵[1] 钦红娟 陈超峰[1] 上官志洪[1] 

机构地区：[1]苏州热工研究院有限公司,江苏苏州215004

出　　处：《安徽农业科学》2014年第31期11062-11066,共5页Journal of Anhui Agricultural Sciences

摘　　要：综述了牛奶的组成以及牛奶中放射性锶的来源和在食物链中的转移。重点介绍了牛奶中放射性锶的分析方法,包括载体的加入、样品处理、锶的分离以及计数测量方法。从分析时间角度分析并评价了牛奶中放射性锶的不同分析方法,特别是核事故应急情况下的快速监测方法。通过快速样品处理方法和液闪谱仪可以在2 d内完成89Sr和90Sr的同时测定。使用可以获得的数据评价了牛奶中放射性锶对人体的年有效剂量,结果表明,本底水平牛奶中的放射性锶对人体不会造成辐射危害。This paper presents a review on the milk composition and source of radiostrontium and transfer in food chain. The measurement methods of radiostrontium in milk were introduced, including carrier addition, sample preparation, radiochemical separation and counting method. Special attention was focused on the parameter of the performing time in order to analyze and assess the determination methods of radiostrontium in milk, especially in the case of emergency situations such as a nuclear plant accident, s9 Sr and 9~Sr can be separately determined in less than 2 days by a rapid sample pretreatment and the use of a liquid scintillation detector. The annual effective dose of radiostrontium due to milk consumption was estimated using data available, the data indicates that radiostrontium in milk of background level are sufficiently too low to pose a risk to human health.

关 键 词：牛奶 放射性锶 分析方法 年有效剂量 

分 类 号：S181.3[农业科学—农业基础科学]