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2004 - XRF Round-robin test GeoPT14 - OshBO, Alkaline Granite

Organizer
International Association of Geoanalysts and Geostandards Newsletter - GeoPT14
Material
OshBO, Alkaline Granite
Literature
Preliminary Report - GeoPT14 Proficiency Testing Round
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Major elements [wt %]

CRB
RV
1sRV
Z-Score
Na₂O
5.370
5.430
0.020
---
MgO
0.010
---
---
--- 
Al₂O₃
15.890
16.040
4.000
---
SiO₂
71.020
71.950
0.590
---
P₂O5
0.145
---
---
--- 
 
 
K₂O
3.580
3.590
0.010
---
CaO
0.390
0.392
0.003
---
TiO₂
0.009
----
---
---
Fe₂O₃ tot.
0.480
0.472
0.006
---
MnO
0.178
0.160
0.001
---
L.O.I.
1.090
0.860
---
---

Trace elements [µg/g]

CRB
RV
1sRV
Z-Score
Ba
20.00
13.00
0.50
---
Cr
112.00
105.70
4.20
---
Cu
12.00
11.31
0.63
---
F
19,800.00
---
---
--- 
Sr
230.00
195.00
7.00
---

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