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Round robin tests XRF-analysis XRF Round-robin test GeoPT9 - OU-6, Penrhyn Slate

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT9
Material of proficiency test:
OU-6, Penrhyn Slate
Study finished:
2001 - 8
Literature:
Preliminary Report - GeoPT9 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O1,6901,7700,030
MgO2,3102,4000,040
Al₂O₃20,58020,2000,030
SiO₂57,57057,5100,100
P₂O50,1170,1180,002
K₂O3,0803,0500,012
CaO0,7400,7400,005
TiO₂1,0100,9980,004
Fe₂O₃ tot9,0309,0010,033
MnO0,2840,2840,001 

trace elements [µg/g]

CRBRV1sRVZ-Score
As17,0013,000,45
Ba491,00477,004,80
Ce73,0074,401,10
Co31,0029,100,48
Cr54,0070,001,39
Cu27,0039,000,48
Ga27,0024,300,29
Hf3,504,700,09
La66,0033,000,51
Nb12,0014,790,31
Nd24,0029,010,52
Ni45,0039,830,71
Pb19,0028,000,50
Pr7,007,800,13
Rb119,00120,200,90
Sm5,605,920,08
Sn4,402,700,11
Sr131,00130,901,16
Th9,7011,500,49
Tl0,500,530,02
U2,301,960,02
V127,00129,401,63
Y26,0027,350,47
Zn120,00118,201,40
Zr169,00174,101,60

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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