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Round robin tests XRF-analysis XRF Round-robin test - IWG - ZW-C, Zinnwaldite

Study organized by:
International Workinggroup Geostandards (IWG) of the Association Nationale de la Recherche Technique, Paris
Material of proficiency test:
Zinnwaldit ZW-C (Lithiumglimmer)
Study finished:
1993 - 6
Literature:
GEOSTANDARDS NEWSLETTERS, Vol. 18, No. 1, 1994

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O0,2700,330
MgO0,1700,160
Al₂O₃18,33018,450
SiO₂52,97054.00
P₂O50,0200,025
SO₃0,0460,045
K₂O7,7507,720
CaO0,3600,370
TiO₂0,0430,050
Fe₂O₃ tot9,2809,460
MnO0,7460,750

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba112,0052,00
Cd1,301,50
Ce74,0097,00
Cl43,0030,00
Co8,002,00
Cr47,0056,00
Cu44,0039,00
F65900,0054500,00
Ga104,0099,00
La32,0030,00
Ni12,0011,00
Pb107,0080,00
Rb8458,008500,00
Sr18,0017,00
U24,0020,00
V4,006,00
W321,00320,00
Y61,0033,00
Zn1029,001050,00
Zr39,0082,00

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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