Uncertainty evaluation of 15 Rare Earth Elements in rock by ICP-MS
This paper is the result of ICP-MS.[Objective]Rare earth elements play an important role in geochemistry,and their additive significance is also very prominent,which can be called geochemical indicators.The content of rare earth elements in rock samples was determined by ICP-MS with open acid solution-inductively,which is a common method.In order to improve the accuracy of detection of rare earth elements in rocks,the uncertainty of measurement is analyzed and evaluated from each component in the experiment.[Methods]The layer-by-layer analysis and final evaluation are established based on the source,which is the content of rare earth elements in rock samples was determined by ICP-MS with open acid solution inductively.[Results]The results showed that the combined relative standard un-certainties ranged from 0.004 9 to 0.009 1.[Conclusions]The uncertainty of this method mainly comes from the standard solution of the sample,and the contribution value of the standard curve fitting is the largest,which is consistent with the actual test situation in the laboratory.
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