目的做好放射性测量的质量保证工作,检验本实验室三套HPGeγ谱仪的性能。方法采用相对测量法,分别用三套谱仪对一个土壤标准样品进行测量比对。结果对三台谱仪的测量结果进行U检验,各核素的U检验值<1.96(置信水平为0.95)。结论本实验室三台谱仪性能可靠,质控措施可行,检测结果可信。 Objective To do a good job in quality assurance of radiometric measurements and test the performance of three HPGe gamma spectrometers in our laboratory. Methods Relative measurement method was used to measure and compare a soil standard sample with three sets of spectrometers respectively. Results U-test was performed on the results of three spectrometers. The U-value of each nuclide was <1.96 (confidence level 0.95). Conclusion The three spectrometers in our laboratory are reliable, the quality control measures are feasible and the test results are credible.