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Round robin tests XRF-analysis XRF Round-robin test GeoPT 34, England - GRI-1, Granite

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT34
Material of proficiency test:
GRI-1, (Granite)
Study finished:
2014 - 2
Literature:
Report - GeoPT34 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O3,9903,9700,0650,170
MgO0,7500,7500,0160,000
Al₂O₃15,97015,9200,2100,120
SiO₂68,71068,6600,7200,030
P₂O50,1320,1360,002-0,480
K₂O4,5704,5700,0730,000
CaO1,8501,8300,0330,290
TiO₂0,4800,4760,0110,200
Fe₂O₃ tot2,8702,8660,0490,040
MnO0,0410,0360,0011,940
L.O.I.*0,3500,3600,110---

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba1953,001942,0049,700,11
C-tot. *1060,00618,00214,00---
Ce155,00167,006,20-0,97
Co3,004,600,30-2,72
Cl *83,00157,0047,00---
Cr16,0019,001,00-1,55
Cu14,0015,400,80-0,83
F *1187,001242,00335,00---
Ga23,0023,601,20-0,23
Hf7,708,400,50-0,72
La89,0092,903,80-0,52
Mo4,002,200,205,74
Nb10,0012,702,40-1,92
Nd50,0054,702,40-0,97
Ni6,007,100,40-1,27
Pb27,0031,001,50-1,34
Pr14,0017,000,90-1,70
Rb166,00167,606,20-0,13
S *60,0089,0038,00---
Sm7,007,400,40-0,46
Sn7,002,500,2012,79
Sr456,00466,0014,80-0,33
Th20,0024,401,20-1,84
Tl0,600,800,10-1,58
U1,602,100,20-1,78
V44,0035,001,702,47
Zn88,0087,003,600,14
Zr330,00330,5011,00-0,02

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
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