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2015 - XRF Round-robin test - GeoPT 37, England - ORPT-1, Rhyolite
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT37
Material
ORPT-1, (Rhyolite)
Literature
Report - GeoPT37 Proficiency Testing Round
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
4.530
4.590
0.073
0.410
MgO
0.480
0.470
0.011
0.470
Al₂O₃
12.580
12.550
0.172
0.090
SiO₂
74.970
74.840
0.782
0.080
P₂O5
0.058
0.057
0.002
0.280
K₂O
2.150
2.140
0.038
0.130
CaO
12.560
12.540
0.171
0.670
TiO₂
1.170
1.140
0.022
0.080
Fe₂O₃ tot
2.880
2.910
0.050
-0.290
MnO
0.061
0.060
0.002
0.270
L.O.I.
0.610
0.770
0.020
-5.090
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
Ba
385.00
374.00
12.30
0.44
Ce
65.00
62.10
2.70
0.54
Cl *
95.00
82.00
55.00
---
Cr
65.00
65.30
2.80
-0.05
F *
200.00
312.00
149.00
---
Ga
18.00
16.00
0.50
1.19
Ge
1.60
1.48
0.10
0.56
Hf
6.00
7.50
0.40
-1.72
La
25.00
27.00
1.30
-0.76
Nd
31.00
34.80
1.60
-1.16
Ni
5.00
6.00
0.50
-1.32
Pb
2.00
5.00
0.30
-4.81
Pr
7.00
8.20
0.60
-1.25
Rb
50.00
52.10
2.30
-0.45
Sc
35.00
38.50
1.80
-0.32
Sm
8.00
9.00
0.50
-0.28
Sr
72.00
72.00
3.00
0.06
V
13.00
10.20
0.60
2.46
Y
71.00
70.80
3.00
0.04
Zn
55.00
51.20
2.30
0.85
Zr
240.00
245.80
8.60
-0.33
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
