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2013 - XRF Round-robin test GeoPT33, England - DBC-1, Ball Clay
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT33
Material
DBC-1, (Ball Clay)
Literature
Report - GeoPT33 Proficiency Testing Round
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
0.290
0.390
0.009
-5.730
MgO
0.350
0.360
0.008
-0.380
Al₂O₃
32.400
31.820
0.380
0.760
SiO₂
52.280
51.980
0.570
0.270
P₂O5
0.071
0.071
0.002
-0.090
K₂O
2.660
2.640
0.046
0.260
CaO
0.200
0.196
0.005
0.380
TiO₂
1.130
1.123
0.030
0.160
Fe₂O₃ tot
0.920
0.937
0.019
-0.460
MnO
0.009
---
---
---
L.O.I.*
9.650
10.130
0.140
-1.670
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
As *
16.00
9.00
---
---
Ba
517.00
476.00
15.10
1.36
Ce
115.00
120.00
4.70
-0.52
Co
5.00
2.10
0.10
9.95
Cr
121.00
105.00
4.20
1.88
Cu
14.00
21.40
1.10
-3.41
Ga
60.00
53.30
1.40
1.44
Hf
4.30
5.00
0.30
-1.08
La
77.00
64.40
2.80
2.29
Nd
48.00
51.70
2.30
-0.81
Ni
25.00
24.00
1.20
0.43
Pb
49.00
53.50
2.30
-0.95
Pr
17.00
14.20
0.80
1.83
Rb
206.00
194.00
7.00
0.85
Sm
8.00
9.50
0.50
-1.41
Sn
22.00
24.20
1.20
-0.99
Sr
129.00
134.00
5.10
-0.50
Ta
5.00
2.60
0.20
6.51
V
144.00
138.00
5.20
0.62
Y
20.00
26.30
1.30
-2.46
Zn
22.00
21.00
1.10
0.47
Zr
167.00
183.00
6.70
-1.22
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
