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Round robin tests XRF-analysis XRF Round-robin test GeoPT 40, England - ShWYO-1, Silty marine shale

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT40
Material of proficiency test:
ShWYO-1, Silty marine shale
Study finished:
2017 - 2
Literature:
Report - GeoPT40 Proficiency Testing Round 40 (Laborcode CRB = W128)

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O1,0201,0000,020-0,490
MgO2,8302,8500,049-0,210
Al₂O₃13,10013,1300,178-0,090
SiO₂61,85061,8700,665-0,020
P₂O50,1810,1810,0050,010
S *0,7500,6800,130
K₂O2,4502,4540,043-0,050
CaO3,9303,9400,064-0,080
TiO₂0,5700,5650,0120,200
Fe₂O₃tot4,6704,6430,0740,180
MnO0,0450,0430,0010,710
L.O.I. *7,5007,7700,650
TC1,0701,0300,0021,060
TOC*0,3000,2500,060

trace elements [µg/g]

CRBRV1sRVZ-Score
As12,0011,800,600,19
Ba558,00580,0017,80-0,62
Ce55,0054,502,400,11
Cl *130,0096,0041,00
Co11,0010,800,600,17
Cr72,0068,302,900,64
Cs8,007,100,401,02
Cu24,0023,501,200,20
F *420,00634,00133,00
Ga17,0015,700,800,76
Hf5,105,040,300,10
La29,0028,401,400,21
Mo2,001,200,104,28
Nb12,0011,300,600,60
Nd26,0025,001,200,41
Ni31,0027,801,301,19
Pb22,0020,101,000,94
Pr7,006,600,400,50
Rb105,00101,004,000,50
Sc13,0011,500,601,22
Sm5,004,900,300,16
Sr194,00195,007,00-0,05
Th7,009,000,50-1,93
U3,003,200,20-1,16
V117,00117,004,600,00
Y24,0023,101,200,39
Zn100,0097,003,900,38
Zr184,00183,006,700,07

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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