GB/T 18043-2013 Translated English of Chinese Standard. (GBT 18043-2013, GB/T18043-2013, GBT18043-2013): Jewellery - Determination of precious metal content - Method using X-ray fluorescence spectrometryhttps://www.chinesestandard.net, 8 déc. 2014 - 22 pages This Standard specifies the methods and requirements for applying X-ray fluorescence spectrometry to determine the precious metal content in jewellery. This Standard applies to qualitative analysis for jewellery and other art-wares. And it also applies to the screening test of precious metal content (gold, silver, platinum, and palladium) in jewellery and other art-wares. |
Expressions et termes fréquents
according to Formula Annex arbitration method average value RSD calculated according calibrated Combined uncertainty correction curve uc crucible C.3.6 curve For serial customer agrees determination of precious draw the correction Expanded uncertainty Figure B.1 Formula B.2 Formula B.3 GB/T Inconformity inconsistency of sample induction furnace Jewellery linear correction curve Linear uncertainty Link section low limit Main body surface Measured value Standard measurement of reference measurement result’s range multiple instrument-measurements nominal value non-uniformity For measurement Number of measurement position Measured value precious metal content Products Quality Supervision reference materials ub Relative standard deviation repeatability and sample Repeatability of measurement result calculation Sample mass sample non-uniformity sample shall prevail shown in Table standard curve Supervision and Testing Table B.6 test in accordance total uncertainty Uncertainty Uncertainty caused Uncertainty of Class uncertainty of correction Uncertainty of linear Uncertainty of reference value and measured value Corrected value value of sample value Relative uncertainty X-ray fluorescence spectrometry