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1基本原理反应堆中子活化分析是利用反应堆中子轰击待分析的样品,通过核反应使其中多种元素(每种元素的至少一种同位素)生成放射性核素,根据这些核素在衰变过程中发射的特征射线能量和强度,对相应元素进行定性、定量分析。茶叶、牡蛎参考物质为中国测试计量研究院提供。2样品制备分别从茶叶参考物质中各取7个平行子样,从牡蛎参考物质中各取7个平行子样,质量约300mg;
1 Basic Principles Reactor neutron activation analysis is the use of reactor neutron bombardment of the sample to be analyzed, through which many elements (at least one isotope of each element) generate radionuclides, according to these radionuclides in the decay process emission Of the characteristics of ray energy and intensity, the corresponding elements of qualitative and quantitative analysis. Tea, oyster reference material for the China Institute of Measurement and Measurement provided. 2 Sample preparation Seven parallel sub-samples were taken from reference materials of tea, seven parallel sub-samples were taken from reference materials of oyster, the mass was about 300 mg.