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Round robin tests XRF-analysis XRF Round-robin test GeoPT31, England - SdAR-1, River Sediment

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT31
Material of proficiency test:
SdAR-1, (river sediment)
Study finished:
2012 - 8
Literature:
Report - GeoPT31 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O1,5401,6100,030-1,160
MgO0,8100,7900,017-0,500
Al₂O₃11,80011,8300,1600,110
SiO₂72,39071,9400,7501,520
P₂O50,1630,1600,0040,320
K₂O3,6603,6300,0600,230
CaO0,8000,7990,0170,040
TiO₂0,6220,6280,074-0,220
Fe₂O₃ tot4,5904,6300,074-0,270
MnO0,6900,6980,015-0,250
L.O.I.*2,3102,6200,040-3,420

trace elements [µg/g]

CRBRV1sRVZ-Score
As38,0036,401,700,46
Ba785,00794,0023,30-0,20
Bi2,001,800,130,89
Br*1,001,50------ 
Cd4,305,300,13-4,52
Ce109,00111,004,30-0,21
Co11,0010,700,600,24
Cr98,0092,703,800,71
Cu309,00302,0010,200,34
F*740,00926,00------ 
Ga18,0017,200,900,46
La61,0058,302,500,55
Mo8,0012,600,70-3,30
Nb32,0034,701,60-0,83
Nd44,0046,102,10-0,50
Ni30,0040,801,90-2,89
Pb1045,00979,3027,801,18
Pr12,0012,600,70-0,40
Rb145,00142,805,40,21
S*1200,001300,00------ 
Sm9,006,700,40-1,54
Sr150,00152,005,70-0,13
Th13,0018,000,90-2,67
U5,004,300,301,31
V69,0068,002,900,13
Y37,0040,901,90-1,04
Zn980,00932,1026,600,90
Zr340,00352,8011,70-0,55

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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