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2009 - XRF Round-robin test GeoPT24 - OU-10, Longmydian Greywacke
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT24
Material
OU-10, Longmydian Greywacke
Literature
Preliminary Report - GeoPT24 Proficiency Testing Round
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
2.430
2.310
0.043
MgO
1.740
1.770
0.033
Al₂O₃
11.020
10.970
0.153
SiO₂
73.440
73.120
0.764
P₂O5
0.089
0.090
0.003
K₂O
1.260
1.280
0.025
CaO
2.330
2.340
0.041
TiO₂
0.520
0.534
0.012
Fe₂O₃ tot
4.900
4.920
0.077
MnO
0.121
0.120
0.003
L.O.I.
2.110
2.200
0.039
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
As
2.70
2.80
Ba
331.00
311.00
10.50
Ce
22.00
38.00
1.80
Co
13.00
12.00
0.70
Cr
36.00
34.00
1.60
Cs
1.60
1.70
0.12
Cu
21.00
22.30
1.10
Ga
10.00
12.00
0.70
Ge
0.80
1.40
Hf
3.30
3.30
0.20
Hg
0.30
0.35
In
0.03
0.04
La
11.00
18.80
1.00
Mo
4.00
0.98
0.08
Nb
7.00
7.70
0.40
Nd
15.00
18.70
1.00
Ni
15.00
17.70
0.90
Pb
24.00
26.90
1.30
Pr
3.00
4.70
0.30
Rb
33.00
36.00
1.70
Sb
3.70
1.20
Sm
2.90
3.90
0.30
Sr
166.00
174.00
6.40
Ta
135.00
124.00
4.80
Te
0.05
0.06
Th
4.70
5.00
0.30
Tl
0.25
0.23
V
77.00
77.00
3.20
W
2.90
2.20
Y
18.00
20.50
1.00
Zn
52.00
54.00
2.40
Zr
124.00
123.00
4.80
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
