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XRF procedures for analysis of standard reference materials
Author(s) -
Tao Guang Yi,
Zhang Zhong Yi,
Ji An
Publication year - 1990
Publication title -
x‐ray spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.447
H-Index - 45
eISSN - 1097-4539
pISSN - 0049-8246
DOI - 10.1002/xrs.1300190211
Subject(s) - certified reference materials , quality assurance , certification , homogeneity (statistics) , computer science , chemistry , chromatography , engineering , detection limit , external quality assessment , operations management , machine learning , political science , law
The importance of Standard Reference Materials (SRMs) or Certified Reference Materials (CRMs) in quality assurance of measurements is widely accepted. SRMs and CRMs are frequently used in analytical chemistry for calibration, verification and evaluation of both analytical methods and instruments. The homogeneity, means of certification, stability and uncertainty of certified values for SRMs or CRMs are of particular interest. As one of the main techniques of elemental analysis, x‐ray fluorescence (XRF) analysis plays an important role in homogeneity tests and certification measurements for SRMs and CRMs. The XRF procedures for analysing Tibet Soil and Chinese Tea CRMs are presented as examples. The results obtained by XRF are in good agreement with the certified values or those from using other analytical techniques and from the different laboratories.