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Round robin tests XRF-analysis Round-robin test PRIS - PRIS S-2, Shale

Study organized by:
Postgraduate Resaerch Institute for Sedimentology (PRIS), Whiteknights, England
Material of proficiency test:
Shale PRIS S-2
Study finished:
1997 - 10
Literature:
Ergbnisprotokoll und Diskette von 08/1998

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O0,4700,5500,066
MgO2,0002,0200,200
Al₂O₃14,65014,3100,272
SiO₂58,35058,9100,866
P₂O50,1430,1500,021
SO₃0,0530,0550,010
K₂O4,3304,2600,119
CaO5,2005,2900,373
TiO₂0,7900,7700,037
Fe₂O₃ tot6,3406,1500,190
MnO0,0910,0930,007

trace elements [µg/g]

CRBRV1sRVZ-Score
As25,0020,006,10
Ce61,0072,005,50
Co17,0017,003,80
Cr98,0091,0023,20
Cu5,0011,002,70
Hf4,905,801,00
La45,0036,003,80
Ni47,0047,008,90
Pb14,0022,007,00
Rb186,00176,0019,10
Sr116,00120,0020,50
V101,0097,0022,20
Zn65,0065,007,30
Zr213,00193,0059,10

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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