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2015 - XRF Round-robin test GeoPT 38, England - OU-7, Gabbro
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT38
Material
OU-7, (Gabbro)
Literature
Report - GeoPT38 Proficiency Testing Round
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
3.240
3.230
0.050
0.090
MgO
5.000
5.100
0.080
-0.610
Al₂O₃
17.070
17.020
0.222
0.120
SiO₂
51.620
51.150
0.566
0.420
P₂O5
0.203
0.201
0.005
0.200
K₂O
1.150
1.162
0.023
-0.260
CaO
9.150
9.270
0.133
-0.450
TiO₂
1.327
1.329
0.025
-0.030
Fe₂O₃ tot
10.260
10.450
0.147
-0.650
MnO
0.154
0.150
0.004
0.500
L.O.I. *
0.700
0.780
0.190
---
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
Ba
431.00
405.00
13.10
0.99
Ce
26.00
37.80
1.80
-3.37
Co
38.00
35.60
1.70
0.72
Cr
170.00
175.80
6.50
-0.45
Cu
104.00
98.20
3.90
0.74
Ga
20.00
20.10
1.00
-0.05
Hf
3.80
3.17
0.20
1.47
La
15.00
17.40
0.90
-1.35
Nb
5.00
6.40
0.40
-1.76
Nd
18.00
20.70
1.00
-1.27
Ni
63.00
63.60
2.70
-0.11
Pb
3.00
6.30
0.40
-4.28
Pr
4.00
4.80
0.30
-1.38
Rb
26.00
27.60
1.30
-0.60
Sc
32.00
29.50
1.40
0.88
Sm
4.00
4.70
0.30
-1.11
Sr
374.00
367.00
12.10
0.28
V
273.00
262.00
9.10
0.61
Y
25.00
24.50
1.20
0.21
Zn
68.00
76.60
3.20
-1.35
Zr
148.00
133.60
5.10
1.41
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
