贵金属元素化学检测标准方法中精密度应用解析

Application of precision in the standard chemical test methods for precious metal elements

实验室按照标准方法对贵金属元素进行化学检测时,检测结果一致性评价需按照标准给定的精密度进行评判。标准方法中根据检测结果水平与精密度的关系不同,给出不同的精密度表达方式。正确运用标准方法中的精密度要求评判结果一致性是检测质量控制的关键。介绍了贵金属元素化学检测标准方法中精密度表示方式的分类及应用,并用实例说明具体使用方法,对使用过程中的关键点进行了重点说明。

The consistency of test results should be assessed according to the precision given in the standard when laboratories test precious metal elements with standard chemical test methods.Standard methods shall present different precision according to the different relation between test result level and precision.Proper use of precision in the standard methods to assess the test result consistency is essential to control the test quality.The paper introduces the classifications and application of precision in the standard chemical test methods for precious metal elements,expounds specific instructions based on practical cases,and elaborates key points during the use.