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2015 - XRF Round-robin test GeoPT 36A, England - SdAR-M2, Metalliferous Sediment
Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT36a
Material
SdAR-M2, (Metal-rich Sediment)
Literature
Report - GeoPT36a Proficiency Testing Round
Download
Major elements [wt %]
CRB
RV
1sRV
Z-Score
Na₂O
2.580
2.579
0.045
0.010
MgO
0.490
0.491
0.011
-0.050
Al₂O₃
12.450
12.470
0.171
-0.060
SiO₂
73.360
73.450
0.770
-0.060
P₂O5
0.079
0.079
0.002
0.000
K₂O
4.980
5.000
0.078
-0.130
CaO
0.850
0.841
0.017
0.250
TiO₂
0.301
0.300
0.007
0.070
Fe₂O₃ tot
2.580
2.630
0.045
-0.550
MnO
0.137
0.134
0.004
0.400
L.O.I.
1.600
1.620
0.030
-0.330
Trace elements [µg/g]
CRB
RV
1sRV
Z-Score
Ag *
10.00
14.50
4.20
---
As
85.00
75.80
3.20
1.45
Ba
1,020.00
990.00
28.00
0.53
C-tot. *
3,351.00
3,080.00
437.00
---
C-org. *
2,697.00
2,383.00
498.00
---
Br *
2.00
1.60
1.00
---
Ce
97.00
98.80
4.00
-0.22
Co
14.00
12.40
0.70
1.18
Cr
57.00
49.60
2.20
1.68
Cu
242.00
236.00
8.30
0.36
Ga
18.00
17.60
0.90
0.23
Hf
7.00
7.29
0.40
-0.34
La
44.00
46.60
2.10
-0.62
Nb
27.00
26.20
1.30
0.31
Nd
36.00
39.40
1.80
-0.94
Ni
48.00
48.80
2.20
-0.17
Pb
820.00
808.00
23.60
0.26
Pr
10.00
11.00
0.60
-0.80
Rb
156.00
149.20
5.60
0.61
S *
770.00
927.00
308.00
---
Sb *
70.00
106.00
42.00
---
Se *
2.00
2.70
1.40
---
Sm
6.00
7.20
0.40
-1.38
Sr
150.00
143.90
5.50
0.56
Th
17.00
14.20
0.80
1.82
U
1.50
2.50
0.20
-2.93
V
595.00
600.90
5.50
-0.06
Y
25.00
25.20
1.20
-1.85
Zn
774.00
760.00
22.40
0.31
Zr
252.00
259.00
9.00
-0.39
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
