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Round robin tests XRF-analysis XRF Round-robin test GeoPT11 - certification project OU-6, Penrhyn Slate

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT11
Material of proficiency test:
certification project OU-6, Penrhyn Slate
Study finished:
2003 - 5
Literature:
preliminary report

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O1,6901,7590,043---
MgO2,4002,4190,034---
Al₂O₃20,47010,4500,201---
SiO₂57,53057,3500,469---
P₂O50,1160,1170,008---
K₂O3,0503,0310,046---
CaO0,7800,7380,024---
TiO₂0,9970,9950,019---
Fe₂O₃ tot.8,8808,9450,142---
MnO0,2810,2840,006---

trace elements [µg/g]

CRBRV1sRVZ-Score
Ba476,00478,0013,60---
Ce67,0077,1013,60---
Co31,0029,101,39---
Cr70,0070,704,06---
Cu38,0040,402,78---
Ga26,0024,201,16---
Hf4,804,700,035---
Nb15,0014,500,77---
Ni45,0040,172,12---
Pb31,0028,801,13---
Rb132,00121,203,77---
Sr130,00131,704,88---
V125,00129,805,04---
Y29,8027,801,16---
Zn116,00111,504,50---
Zr168,00173,504,58---

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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