土壤样品γ能谱测量中日比对总结

Summarizing the Intercomparison on the γ-ray Spectrometry Analysis of Soil between China and Japan

目的检验和提高γ能谱测量分析技术及质量保证措施。方法日本JCAC,中国RMTC和我实验室分别对两个土壤样品中的40K、208Tl、214Bi、214Pb、228Ac和137Cs6个核素进行独立测量分析和比对。结果我实验室对两个样品的测量值相对于总体平均值的最大偏差为4.1%,低水平137Cs测量值的最大偏差为3.6%,均满足比对要求。结论我实验室的检测方法是正确的,质量管理与质量控制体系是完善有效的,结果是可靠的。

Objective To inspect and improve the measurement methods and quality of γ- ray spectrometry analysis. Methods By the intercomparison on the measurement of 6 radionuclides, including 4^40K, ^208T1, ^214Bi, ^214pb, ^228Ac and ^137 Cs, in two soil samples with γ- ray spectrometry in three laboratories, JCAC in Japan, RMTC and our laboratory in China. Results The maximum difference of the values measured by our laboratory is 4.1% related to the total average values, and the difference of the value of low activity nuclides ^137Cs is 3.6%. The relative differences of all values meet the requirements. Conclusion The measurement method which we take is correct, and the quality guarantee and control system of our laboratory is perfect and effective, and the results of our measurement are reliable.