闪烁体低本底α、β测量仪测定水中的总α、总β

Determination Totalα,Totalβin Water by Scintillator Low Backgroundα,βMeasuring Instrument

随着民用核设施的应用和环境保护的要求越来越严格,人们对水体中特别是饮用水中的放射性问题也越来越重视,同时对弱放射性物质的监测也提出了更高的要求,其中α、β的辐射水平关乎到环境、食品、水资源的污染程度,是重要的放射性检测指标。通过对闪烁体低本底α、β测量仪的稳定性进行检验,依据GB/T 11682-2008《低本底α和、或β测量仪》、JJG853-2013《低本底α、β测量仪》等相关参考标准,对水中的总α、总β进行测定,精密度分别为5.41%和4.13%。并对驻地附近地区的生活饮用水进行采集检测,结果总α和总β放射性水平分别为0.0418 Bq/L和0.1202 Bq/L,均在国家标准规定限值以内。结果令人满意,能够快速、准确测定水中的总α、总β,可广泛应用于环境、水资源、核工业、地勘等行业的总α、总β的准确测定。

With the application of civilian nuclear facilities and the increasingly strict requirements for environmental protection,people attach great importance to the radioactive problem in water bodies,especially drinking water.At the same time,higher requirements have been put forward for the monitoring of weak radioactive substances,among whichα,βradiation level is related to the pollution level of the environment,food and water resources,and is an important radioactive detection indicator.The stability of scintillation low backgroundαandβmeasuring instrument was tested.According to GB/T 11682-2008 low backgroundαandβMeasuring Instrument,JJG853-2013 Low backgroundαandβmeasuring Instrument and other relevant reference standards,the totalαand totalβin water were determined.The precision was 5.41%and 4.13%,respectively.The results showed that the totalαand totalβlevels were 0.0418 Bq/L and 0.1202 Bq/L,respectively,which were within the limits of the national standard.The results were satisfactory,which could be used for the rapid and accurate determination of totalαand totalβin water,and could be widely used for the accurate determination of totalαand totalβin environment,water resources,nuclear industry,geological exploration and other industries.