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Round robin tests XRF-analysis XRF Round-robin test GeoPT33, England - DBC-1, Ball Clay

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT33
Material of proficiency test:
DBC-1, (Ball Clay)
Study finished:
2013 - 8
Literature:
Report - GeoPT33 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O0,2900,3900,009-5,730
MgO0,3500,3600,008-0,380
Al₂O₃32,40031,8200,3800,760
SiO₂52,28051,9800,5700,270
P₂O50,0710,0710,002-0,090
K₂O2,6602,6400,0460,260
CaO0,2000,1960,0050,380
TiO₂1,1301,1230,0300,160
Fe₂O₃ tot0,9200,9370,019-0,460
MnO0,009---------
L.O.I.*9,65010,1300,140-1,670

trace elements [µg/g]

CRBRV1sRVZ-Score
As *16,009,00------ 
Ba517,00476,0015,101,36
Ce115,00120,004,70-0,52
Co5,002,100,109,95
Cr121,00105,004,201,88
Cu14,0021,401,10-3,41
Ga60,0053,301,401,44
Hf4,305,000,30-1,08
La77,0064,402,802,29
Nd48,0051,702,30-0,81
Ni25,0024,001,200,43
Pb49,0053,502,30-0,95
Pr17,0014,200,801,83
Rb206,00194,007,000,85
Sm8,009,500,50-1,41
Sn22,0024,201,20-0,99
Sr129,00134,005,10-0,50
Ta5,002,600,206,51
V144,00138,005,200,62
Y20,0026,301,30-2,46
Zn22,0021,001,100,47
Zr167,00183,006,70-1,22

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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