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Round robin tests XRF-analysis XRF Round-robin test GeoPT 41, England - ORA-1, Andesite

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT41
Material of proficiency test:
ORA-1, Andesite
Study finished:
2017 - 7
Literature:
Report - GeoPT41 Proficiency Testing Round 41 (Laborcode CRB = Y66)

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O4,2704,2000,0680,550
MgO3,2503,1900,0530,580
Al₂O₃17,50017,5000,2280,000
SiO₂60,16060,4800,652-0,250
P₂O50,1720,1730,005-0,160
K₂O1,2401,2390,0240,030
CaO6,1206,0000,0920,650
TiO₂0,8600,8500,0170,890
Fe₂O₃tot6,3406,1350,0931,100
MnO0,0990,0950,0030,680
L.O.I. *- 0,1800,0000,120-0,780
TC * [µg/g]272221,00072,0000,350

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba337,00323,0010,800,65
Ce36,0034,401,600,50
Cl *95,00102,0046,00-0,08
Co19,0019,001,000,03
Cr35,0040,001,80-1,36
Cu22,0030,001,40-2,77
Ga20,0020,501,00-0,25
Hf3,503,700,20-0,41
La10,0016,300,90-3,69
Nb8,008,100,50-0,06
Nd18,0017,500,900,29
Ni32,0033,401,60-0,44
Pb12,009,000,502,91
Pr3,004,300,30-2,32
Rb19,0018,601,000,24
Sm4,003,600,200,76
Sr559,00543,0016,800,48
V114,00108,004,300,70
Y16,0015,200,800,48
Zn60,0066,902,80-1,21
Zr143,00146,005,50-0,27

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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