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2017 - XRF Round-robin test GeoPT 41, England - ORA-1, Andesite
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT41
Material
ORA-1, Andesite
Literature
Report - GeoPT41 Proficiency Testing Round 41 (Laborcode CRB = Y66)
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
4.270
4.200
0.068
0.550
MgO
3.250
3.190
0.053
0.580
Al₂O₃
17.500
17.500
0.228
0.000
SiO₂
60.160
60.480
0.652
-0.250
P₂O5
0.172
0.173
0.005
-0.160
K₂O
1.240
1.239
0.024
0.030
CaO
6.120
6.000
0.092
0.650
TiO₂
0.860
0.850
0.017
0.890
Fe₂O₃tot
6.340
6.135
0.093
1.100
MnO
0.099
0.095
0.003
0.680
L.O.I. *
- 0,18
0.000
0.120
-0.780
TC * [µg/g]
272.000
221.000
72.000
0.350
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
Ba
337.00
323.00
10.80
0.65
Ce
36.00
34.40
1.60
0.50
Cl *
95.00
102.00
46.00
-0.08
Co
19.00
19.00
1.00
0.03
Cr
35.00
40.00
1.80
-1.36
Cu
22.00
30.00
1.40
-2.77
Ga
20.00
20.50
1.00
-0.25
Hf
3.50
3.70
0.20
-0.41
La
10.00
16.30
0.90
-3.69
Nb
8.00
8.10
0.50
-0.06
Nd
18.00
17.50
0.90
0.29
Ni
32.00
33.40
1.60
-0.44
Pb
12.00
9.00
0.50
2.91
Pr
3.00
4.30
0.30
-2.32
Rb
19.00
18.60
1.00
0.24
Sm
4.00
3.60
0.20
0.76
Sr
559.00
543.00
16.80
0.48
V
114.00
108.00
4.30
0.70
Y
16.00
15.20
0.80
0.48
Zn
60.00
66.90
2.80
-1.21
Zr
143.00
146.00
5.50
-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
