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采用仪器中子活化分析法测定了各种地质样品中20多个元素的含量。为了检验方法的准确度和精密度,分析了美国国家地质局的标准物质USGS-AGV-Ⅰ、USGS-BCR-1及美国国家标准局的NBS-1632煤粉,准确度和精密度的误差均小于15％。 用仪器中子活化分析法测定了日喀则蛇绿岩中稀土元素含量,通过对稀土元素地球化学特征的分析,我们认为日喀则蛇绿岩在地球化学性质方面相似于大洋中脊拉斑玄武岩,它们可能是形成于特提斯洋脊。
Instrumental neutron activation analysis was used to determine the content of more than 20 elements in various geological samples. In order to test the accuracy and precision of the method, the errors of accuracy and precision of the USGS-AGV-I, USGS-BCR-1 and NBS-1632 pulverized coal from the National Bureau of Standards were analyzed Less than 15%. By means of neutron activation analysis, the content of rare earth elements in the Xigaze ophiolite is determined. Based on the analysis of the geochemical characteristics of the rare earth elements, we believe that the Xigaze ophiolite is similar in geochemical characteristics to the mid-ocean ridge tholeiite basalts, Is formed in the Tethys ridge.