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Round robin tests XRF-analysis XRF Round-robin test GeoPT 38, England - OU-7, Gabbro

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT38
Material of proficiency test:
OU-7, (Gabbro)
Study finished:
2015 - 11
Literature:
Report - GeoPT38 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O3,2403,2300,0500,090
MgO5,0005,1000,080-0,610
Al₂O₃17,07017,0200,2220,120
SiO₂51,62051,1500,5660,420
P₂O50,2030,2010,0050,200
K₂O1,1501,1620,023-0,260
CaO9,1509,2700,133-0,450
TiO₂1,3271,3290,025-0,030
Fe₂O₃ tot10,26010,4500,147-0,650
MnO0,1540,1500,0040,500
L.O.I. *0,7000,7800,190---

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba431,00405,0013,100,99
Ce26,0037,801,80-3,37
Co38,0035,601,700,72
Cr170,00175,806,50-0,45
Cu104,0098,203,900,74
Ga20,0020,101,00-0,05
Hf3,803,170,201,47
La15,0017,400,90-1,35
Nb5,006,400,40-1,76
Nd18,0020,701,00-1,27
Ni63,0063,602,70-0,11
Pb3,006,300,40-4,28
Pr4,004,800,30-1,38
Rb26,0027,601,30-0,60
Sc32,0029,501,400,88
Sm4,004,700,30-1,11
Sr374,00367,0012,100,28
V273,00262,009,100,61
Y25,0024,501,200,21
Zn68,0076,603,20-1,35
Zr148,00133,605,101,41

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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