Journal
ATOMIC SPECTROSCOPY
Volume 44, Issue 1, Pages 32-44Publisher
ATOMIC SPECTROSCOPY PRESS LTD
DOI: 10.46770/AS.2023.017
Keywords
-
Categories
Ask authors/readers for more resources
This paper discusses the preparation and characterization of certified reference materials (CRMs) from five seleniferous regions of China. The CRMs were determined for various elements and underwent an interlaboratory comparison. The results provide certified values and expanded uncertainties for the mass fractions of selenium, as well as the mass fractions of other elements in the CRMs.
This paper describes the preparation and characterization procedure of the certified reference materials (CRMs) (GBW07900, GBW07901, GBW07902, GBW07903, and GBW07904), of which the raw materials deriving from five seleniferous regions of China. Mass fractions of Se, Cr, Ni, Cu, Zn, Cd and Pb in the samples were determined, and two CRMs GBW07901 and GBW07902 were preliminarily characterized for Se geochemical fractionation measurement. The samples exhibited homogeneity and stability, and the interlaboratory comparison scheme was accomplished by ten ISO accredited laboratories. The certified values and expanded uncertainties (k = 2) for the selenium mass fractions in GBW07900-GBW07904 are 19.5 +/- 2.1 mu g g-1, 9.4 +/- 1.4 mu g g-1, 2.7 +/- 0.4 mu g g-1, 0.91 +/- 0.10 mu g g-1 and 0.83 +/- 0.07 mu g g-1, respectively. The mass fractions of Cr, Ni, Cu, Zn, Cd and Pb of the CRMs range from 92-488 mu g g-1, 23-157 mu g g-1, 26-157 mu g g-1, 74-248 mu g g-1, 0.04-11.8 mu g g-1 and 13.7-36 mu g g-1, respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available