YB/T 4143-2019 The method for testing the uniformity of solid metal using spark source atomic emission spectroscopy

Scope

1.1 This standard applies to the uniformity of solid block metal materials in the same batch measured by spark source atomic emission spectrometry. This standard complies with the general principles and statistical methods of GB/T 15000.3—Determination of Values of Standard Samples. It is mainly used for the development of standard samples, but can also be applied to the uniformity measurement of other batches (including large and small batches, referred to as L/B) of metal materials. The results provide a comprehensive study of L/B uniformity indoors or between laboratories. 1.2 The design of this test is mainly aimed at the uniformity verification of elements in metal L/B by spark source atomic emission spectrometry, and can also be applied to other instrument detection technologies, such as X-ray fluorescence spectrometry (XRF) and atomic absorption spectrometry (AAS). Note 1: This approach is not limited to elemental analysis technology. It is also applicable to any other measurable attributes, such as hardness measurement using Rockwell technology. 1.3 Pre-determine the judgment criteria for the measured samples, that is, the maximum acceptable degree of uniformity depends on the intended use of L/B. 1.4 This standard is suitable for spectroscopy experts or highly skilled personnel who are proficient in sampling and sample processing and familiar with computer spreadsheet data processing. 1.5 If the signal background ratio is not a limiting factor, this standard is applicable to one or more elements. 1.6 This standard includes methods for correcting instrument system drift over time. If the instrument system exhibits drift, the data analysis may yield erroneous conclusions. 1.7 This standard also includes estimating components and uncertainties through type standardization calibration or multiple calibrations. 1.8 This standard proposes a concept of decomposing a non-uniform population into multiple uniform subsets. 1.9 This standard does not address s

Development Information

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