Round-robin test GeoPT24 - OU-10, Greywacke - CRB GmbH
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Round robin tests XRF-analysis XRF Round-robin test GeoPT24 - OU-10, Longmydian Greywacke

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT24
Material of proficiency test:
OU-10, Longmydian Greywacke
Study finished:
2009 - 2
Literature:
Preliminary Report - GeoPT24 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O2,4302,3100,043
MgO1,7401,7700,033
Al₂O₃11,02010,9700,153
SiO₂73,44073,1200,764
P₂O50,0890,0900,003 
K₂O1,2601,2800,025
CaO2,3302,3400,041
TiO₂0,5200,5340,012
Fe₂O₃ tot4,9004,9200,077
MnO0,1210,1200,003
L.O.I.2,1102,2000,039

trace elements [µg/g]

CRBRV1sRVZ-Score
As2,702,80 
Ba331,00311,0010,50
Ce22,0038,001,80
Co13,0012,000,70
Cr36,0034,001,60
Cs1,601,700,12
Cu21,0022,301,10
Ga10,0012,000,70
Ge0,801,40 
Hf3,303,300,20
Hg0,300,35 
In0,030,04 
La11,0018,801,00
Mo4,000,980,08
Nb7,007,700,40
Nd15,0018,701,00
Ni15,0017,700,90
Pb24,0026,901,30
Pr3,004,700,30
Rb33,0036,001,70
Sb3,701,20 
Sm2,903,900,30
Sr166,00174,006,40
Ta135,00124,004,80
Te0,050,06 
Th4,705,000,30
Tl0,250,23 
V77,0077,003,20
W2,902,20 
Y18,0020,501,00
Zn52,0054,002,40
Zr124,00123,004,80

Legend

CRB
results CRB
cooperative test
results collaborative study
1s-RV
Standard deviation collaborative study
Z-Score
Difference of measured value from mean study
*
Value not certified
Download results on this study as pdf-file

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