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Round robin tests XRF-analysis XRF Round-robin test GeoPT 29, England - NKT-1, Nephelinite

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT29
Material of proficiency test:
NKT-1, (Nephelinite)
Study finished:
2011 - 7
Literature:
Preliminary Report - GeoPT29 Proficiency Testing Round

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O3,3803,3900,060-0,070
MgO14,20014,1900,1900,030
Al₂O₃10,09010,0500,1400,130
SiO₂37,69037,7800,440-0,100
P₂O50,9060,9170,019-0,280
K₂O1,2401,2600,024-0,370
CaO12,99012,9900,1800,010
TiO₂3,8803,8400,0630,300
Fe₂O₃ tot13,38013,2900,1800,260
MnO0,2080,2030,0050,490
L.O.I.*1,7801,8300,440---

trace elements [µg/g]

CRBRV1sRVZ-Score
Ag*0,900,78------ 
As*5,006,10------ 
Ba804,00741,0023,101,45
Cd*0,600,40------ 
Ce124,00124,004,80-0,03
Co63,0063,702,70-0,13
Cl*100,0081,00------ 
Cr451,00438,0014,000,47
Cu44,0056,502,50-2,54
F*850,00911,00------ 
Ga21,0020,201,000,38
Hf5,506,700,40-1,53
Hg*0,300,10------ 
La68,0062,602,701,00
Nb83,0085,203,50-0,32
Nd49,0060,502,60-2,20
Ni316,00315,0010,600,05
Pr15,0015,200,80-0,12
Rb21,0031,401,50-3,48
Sc17,0022,501,10-2,46
Sm8,0012,800,70-3,19
Sr1174,001175,0032,40-0,02
U2,102,300,20-0,32
V300,00292,0010,000,38
Y26,0029,501,40-1,22
Zn111,00117,404,60-0,70
Zr265,00295,009,903,70

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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