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2011 - XRF Round-robin test GeoPT 28, England - SBC-1, Shale
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT28
Material
SBC-1, (Shale)
Literature
Preliminary Report - GeoPT28 Proficiency Testing Round
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O*
0.190
0.220
0.040
---
MgO
2.620
2.600
0.050
0.270
Al₂O₃
20.940
21.000
0.260
-0.110
SiO₂
47.450
47.640
0.530
-0.180
P₂O5
0.366
0.370
0.009
-0.280
K₂O
3.490
3.450
0.057
-0.370
CaO
2.950
2.950
0.050
0.010
TiO₂
0.857
0.855
0.018
0.060
Fe₂O₃ tot
9.810
9.710
0.138
0.350
MnO
0.153
0.150
0.004
0.380
L.O.I.
9.830
10.230
0.140
1.380
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
Ag*
0.90
0.78
---
---
As
28.00
25.70
1.30
0.93
Ba
810.00
788.00
23.10
0.48
Ce
120.00
108.00
4.30
1.38
Co
33.00
22.70
1.10
4.54
Cr
126.00
109.00
4.30
1.98
Cs
10.00
8.20
0.50
1.89
Cu
31.00
31.20
1.50
-0.07
F*
920.00
996.00
240.00
---
Ga
28.00
27.00
1.30
0.38
Hf
3.70
3.70
0.20
-0.08
La
59.00
52.50
2.30
1.41
Nb
15.00
15.30
0.80
-0.19
Nd
48.00
49.20
2.20
-0.26
Ni
86.00
82.80
3.40
0.46
Pb
38.00
35.00
1.60
0.92
Pr
11.00
12.60
0.70
-1.16
Rb
147.00
147.00
5.50
0.00
Sc
17.00
20.00
1.00
-1.47
Sm
8.00
9.60
0.50
-1.85
Sr
185.00
178.00
6.50
0.54
Th
16.40
15.80
0.80
0.33
U
5.10
5.80
0.40
-0.93
V
220.00
220.00
7.80
0.00
Y
37.00
36.50
1.70
0.16
Zn
189.00
186.80
6.80
0.16
Zr
137.00
134.30
5.10
0.27
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
