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Using external standard method with absorption correction in SRXRF analysis of biological tissues
Author(s) -
Trunova V. A.,
Sidorina A. V.,
Zolotarev K. V.
Publication year - 2015
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.2608
Subject(s) - absorption (acoustics) , matrix (chemical analysis) , economic shortage , fluorescence , synchrotron radiation , x ray fluorescence , analytical chemistry (journal) , sample (material) , certified reference materials , extended x ray absorption fine structure , chemistry , materials science , physics , environmental chemistry , optics , detection limit , absorption spectroscopy , chromatography , government (linguistics) , linguistics , philosophy
The techniques of X‐ray fluorescence analysis with synchrotron radiation (SRXRF) use mainly the external standard method, which imposes an essential requirement of similarity of absorption and scattering of the primary and fluorescence radiation by the matrices of the test sample and the reference one. In this connection, there is an actual problem of shortage or absence of required standard reference samples. In this paper we consider a variant of analysis of a biological tissue (certified reference material NCSZC 85005 Beef liver) with a standard sample of geological matrix (certified reference material IAEA Soil‐7) as a reference sample. The concentrations of K, Ca, Mn, Fe, Cu, Zn, Br, Rb and Sr were determined in the standard liver sample with and without allowance for fluorescence radiation absorption by the differing matrices. Using the absorption correction enabled full account of the difference in the absorption properties of the matrices under study (liver and soil) and obtaining chemical element concentrations having no significant difference from certified values. Copyright © 2015 John Wiley & Sons, Ltd.