FJ-2603G α、β弱放射性测量装置性能测试和实际应用  

PERFORMENCE TESTING AND PRACTICAL APPLCATION OF FJ-2603G α AND β WEAK RADIOACTIVE DEVICE

作　　者：吴云[1] 蒲登荣[1] 罗靖[1] 张明洪[1] 张玉美[1] 杨晓冬[1] 

机构地区：[1]南充市疾病预防控制中心,南充637000

出　　处：《现代预防医学》2010年第10期1931-1933,共3页Modern Preventive Medicine

摘　　要：[目的]完成对南充市自来水及其源水总α、总β值的基础水平调查及监测工作,对FJ-2603G型低本底α、β弱放射性测量仪进行性能测试和实际应用。[方法]对该仪器的效率、本底、效率长期稳定性、本底长期稳定性等进行测试,测量南充市5个自来水厂的水源水、出厂水、管网末梢水样中的总α、总β值。[结果]该仪器对于239Puα源的2π探测效率比≥80%,本底≤0.003cpm;对于90Sr-90Yβ源的2π探测效率≥30%,本底≤0.052cpm;效率长期稳定度R分别为1.49%(总α道)和1.15%(总β道)、本底长期稳定性测量中的变异系数Vb分别为α道0.723,β道0.205。[结论]以上各项主要性能指标符合国家标准,能够胜任自来水及其源水总α、总β值放射性的检测工作。[Objective] To perform testing and practical application for FJ-2603G low α and β weak radiation measuring instrument, so as to complete investigation and monitoring of tap water and source water at the basis of the level of the total α and total β in Nanchong. [Methods] We tested the efficiency, background, the efficiency of long-term stability and the end of long-term stability of the apparatus. We measured the total α and β value in source water, finished water and water samples of Network peripheral in the 5 water plants of Nanchong. [Results] The detection efficiency of instrument for the 2л of 239Pu α source was ≥ 80%, and the end was ≤ 0.003 cpm; The detection efficiency of the 2π of 90Sr-90Y β source was ≥ 30% and the end was ≤ 0.052 cpm; the efficiency of long-term stability of R were 1.49% （total α Road） and 1.15% （total β Road） and the variation Vb at the end of long-term stability of the measurement for αand β were 0.723 and 0.205, respectively. [Conclusion] The above performance indicators in line with national standards, which would be capable of detecting the radioactive of the totalαand total β value in tap water and source water.

关 键 词：水 总α 总β 测试应用 

分 类 号：R115[医药卫生—公共卫生与预防医学]