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2017 - XRF Round-robin test GeoPT 40, England - ShWYO-1, Silty marine shale
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT40
Material
ShWYO-1, Silty marine shale
Literature
Report - GeoPT40 Proficiency Testing Round 40 (Laborcode CRB = W128)
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
1.020
1.000
0.020
-0.490
MgO
2.830
2.850
0.049
-0.210
Al₂O₃
13.100
13.130
0.178
-0.090
SiO₂
61.850
61.870
0.665
-0.020
P₂O5
0.181
0.181
0.005
0.010
S *
0.750
0.680
0.130
K₂O
2.450
2.454
0.043
-0.050
CaO
3.930
3.940
0.064
-0.080
TiO₂
0.570
0.565
0.012
0.200
Fe₂O₃tot
4.670
4.643
0.074
0.180
MnO
0.045
0.043
0.001
0.710
L.O.I. *
7.500
7.770
0.650
TC
1.070
1.030
0.002
1.060
TOC*
0.300
0.250
0.060
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
As
12.00
11.80
0.60
0.19
Ba
558.00
580.00
17.80
-0.62
Ce
55.00
54.50
2.40
0.11
Cl *
130.00
96.00
41.00
Co
11.00
10.80
0.60
0.17
Cr
72.00
68.30
2.90
0.64
Cs
8.00
7.10
0.40
1.02
Cu
24.00
23.50
1.20
0.20
F *
420.00
634.00
133.00
Ga
17.00
15.70
0.80
0.76
Hf
5.10
5.04
0.30
0.10
La
29.00
28.40
1.40
0.21
Mo
2.00
1.20
0.10
4.28
Nb
12.00
11.30
0.60
0.60
Nd
26.00
25.00
1.20
0.41
Ni
31.00
27.80
1.30
1.19
Pb
22.00
20.10
1.00
0.94
Pr
7.00
6.60
0.40
0.50
Rb
105.00
101.00
4.00
0.50
Sc
13.00
11.50
0.60
1.22
Sm
5.00
4.90
0.30
0.16
Sr
194.00
195.00
7.00
-0.05
Th
7.00
9.00
0.50
-1.93
U
3.00
3.20
0.20
-1.16
V
117.00
117.00
4.60
0.00
Y
24.00
23.10
1.20
0.39
Zn
100.00
97.00
3.90
0.38
Zr
184.00
183.00
6.70
0.07
Legende
CRB
Interlaboratory test
1s-RV
Z-score
*
CRB Results
Interlaboratory Test Results
Standard Deviation Interlaboratory Test
Difference between the measured value and the average value of the interlaboratory test
Value not certified
