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Round robin tests XRF-analysis XRF Round-robin test GeoPT 28, England - SBC-1, Shale

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT28
Material of proficiency test:
SBC-1, (Shale)
Study finished:
2011 - 1
Literature:
Preliminary Report - GeoPT28 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O*0,1900,2200,040---
MgO2,6202,6000,0500,270
Al₂O₃20,94021,0000,260-0,110
SiO₂47,45047,6400,530-0,180
P₂O50,3660,3700,009-0,280
K₂O3,4903,4500,057-0,370
CaO2,9502,9500,0500,010
TiO₂0,8570,8550,0180,060
Fe₂O₃ tot9,8109,7100,1380,350
MnO0,1530,1500,0040,380
L.O.I.9,83010,2300,1401,380

trace elements [µg/g]

CRBRV1sRVZ-Score
Ag*0,900,78------ 
As28,0025,701,300,93
Ba810,00788,0023,100,48
Ce120,00108,004,301,38
Co33,0022,701,104,54
Cr126,00109,004,301,98
Cs10,008,200,501,89
Cu31,0031,201,50-0,07
F*920,00996,00240,00---
Ga28,0027,001,300,38
Hf3,703,700,20-0,08
La59,0052,502,301,41
Nb15,0015,300,80-0,19
Nd48,0049,202,20-0,26
Ni86,0082,803,400,46
Pb38,0035,001,600,92
Pr11,0012,600,70-1,16
Rb147,00147,005,500,00
Sc17,0020,001,00-1,47
Sm8,009,600,50-1,85
Sr185,00178,006,500,54
Th16,4015,800,800,33
U5,105,800,40-0,93
V220,00220,007,800,00
Y37,0036,501,700,16
Zn189,00186,806,800,16
Zr137,00134,305,100,27

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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