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Round robin tests XRF-analysis XRF Round-robin test GeoPT 45, England - GONV-1, Silicified Sandstone

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT45
Material of proficiency test:
GONV-1, Silicified Sandstone
Study finished:
2019 - 12
Literature:
Report - GeoPT45 Proficiency Testing Round 45 (Laborcode CRB = E86)

major elements [wt %]

CRBRV1sRVZ-Score
MgO0,5300,5400,012-0,420
Al₂O₃9,5309,5100,1360,070
SiO₂80,02080,2600,830-0,140
P₂O50,0920,0920,0030,000
K₂O2,7402,7520,047-0,130
CaO0,2100,2000,0050,980
TiO₂0,5650,5660,012-0,020
Fe₂O₃tot1,9801,9600,0350,280
L.O.I.3,5703,5900,060-0,200

trace elements [µg/g]

CRBRV1sRVZ-Score
As180,00177,006,500,23
Ba1280,001302,0035,40-0,31
Ce89,0093,203,80-0,56
Co2,001,300,103,45
Cr133,00126,004,900,72
Cu13,0012,000,700,73
Ga10,0011,200,60-0,95
Hf10,0011,750,60-1,35
La40,0052,902,30-2,76
Nb14,0010,700,602,75
Nd26,0030,601,50-1,57
Ni10,0010,300,60-0,22
Pb10,008,800,501,23
Rb83,0090,203,70-0,98
Sc6,009,700,50-3,33
Sr92,0089,003,600,37
V100,00101,204,00-0,15
Y22,0020,101,000,95
Zn22,0021,101,100,45
Zr415,00436,5014,00-0,77

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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