Comparison of XRF Values with NIST Certified Standard

Reference Material 2711 (Montana Soil). All concentrations are ug/g unless specified otherwise.

Element
XRF Values
NIST Certified
Values

Al %
6.60 +/- 0.22
6.53 +/- 0.09

Ba
695.47 +/- 23.9
726 +/- 38

Cd
43.88 +/- 1.51
41.7 +/- 0.25

Cr
54.38 +/- 1.88
(47)*

Cu
140.24 +/- 4.84
114 +/- 2

Mo
871 +/- 30
638 +/- 28

Pb
1155.29 +/- 40
1162 +/- 31

Rb
117.34 +/- 4.05
(110)*

Sn
5.72 +/- 0.20
-

Sr
262.35 +/- 9.05
245.3 +/- 0.7

Ti %
0.311 +/- 0.01
0.306 +/- 0.23

V
83 +/- 2.9
81.6 +/- 2.9

Zn
340.58 +/- 11.74
350.4 +/-4.8

Zr
233 +/- 8.03
(230)*

* Values in parenthesis were taken from NIST noncertified values.

Document author(s) : LA 437/465 Fall 1995
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