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Round robin tests XRF-analysis XRF Round-robin test - GeoPT 37, England - ORPT-1, Rhyolite

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT37
Material of proficiency test:
ORPT-1, (Rhyolite)
Study finished:
2015 - 7
Literature:
Report - GeoPT37 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O4,5304,5900,0730,410
MgO0,4800,4700,0110,470
Al₂O₃12,58012,5500,1720,090
SiO₂74,97074,8400,7820,080
P₂O50,0580,0570,0020,280
K₂O2,1502,1400,0380,130
CaO12,56012,5400,1710,670
TiO₂1,1701,1400,0220,080
Fe₂O₃ tot2,8802,9100,050-0,290
MnO0,0610,0600,0020,270
L.O.I.0,6100,7700,020-5,090

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba385,00374,0012,300,44
Ce65,0062,102,700,54
Cl *95,0082,0055,00---
Cr65,0065,302,80-0,05
F *200,00312,00149,00---
Ga18,0016,000,501,19
Ge1,601,480,100,56
Hf6,007,500,40-1,72
La25,0027,001,30-0,76
Nd31,0034,801,60-1,16
Ni5,006,000,50-1,32
Pb2,005,000,30-4,81
Pr7,008,200,60-1,25
Rb50,0052,102,30-0,45
Sc35,0038,501,80-0,32
Sm8,009,000,50-0,28
Sr72,0072,003,000,06
V13,0010,200,602,46
Y71,0070,803,000,04
Zn55,0051,202,300,85
Zr240,00245,808,60-0,33

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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