食品中131I、134Cs和137Cs快速检测方法研究

摘要

To respond to emergencies,exploring and developing a radioactive rapid detection method in foodhas important practical significance.This experiment through the study of the classification, the correction of the samples,simplifies the sample preparation process and its feasibility was verified.Through the research on radi-oactive detection of radioactive standard source and five different activity gradient food samples,analysis of its experimental data obtained in different detecting time,the time required for the rapid detection of iodine-131, cesium-134 and cesium-137 radionuclide in the food is concluded.And after an analysis of the uncertainty of the experimental results and under the premise of satisfying the requirements, the radioactive rapid detection method is established.%为应对突发事件，加快在紧急情况下食品中放射性物质的检测速度，探索和研究出一种食品中放射性物质的快速检测方法具有重要的意义。该实验通过对样品进行分类、校正，简化了样品前处理过程并验证了其可行性；通过对放射性标准源及5个不同活度梯度的食品样品的放射性检测研究，对比分析其在不同检测时间所得实验数据，研究了食品中131 I、134 Cs和137 Cs放射性核素的快速检测所需的时间，并在对实验结果进行不确定度分析且满足实验要求的前提下，确立了该放射性快速检测的方法。