Round robin tests XRF-analysis XRF Round-robin test GeoPT5 - AMH-1, Mount Hood Andesite
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT5
Material of proficiency test:
AMH-1, Mount Hood Andesite
Study finished:
1999 - 7
Literature:
Preliminary Report - GeoPT5 Proficiency Testing Round, Geostandards Newsletter, Vol. 24, No. 1, 06/00, p. 137
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 4,180 | 4,208 | 0,184 | |
| MgO | 3,140 | 3,156 | 0,179 | |
| Al₂O₃ | 17,660 | 17,530 | 0,375 | |
| SiO₂ | 60,450 | 60,337 | 0,686 | |
| P₂O5 | 0,171 | 0,170 | 0,011 | |
| K₂O | 1,230 | 1,227 | 0,047 | |
| CaO | 6,020 | 6,064 | 0,223 | |
| TiO₂ | 0,860 | 0,846 | 0,052 | |
| Fe₂O₃ tot. | 6,130 | 6,098 | 0,281 | |
| MnO | 0,095 | 0,094 | 0,007 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 308,00 | 322,00 | 24,00 | |
| Ce | 39,00 | 33,00 | 4,70 | |
| Co | 21,00 | 18,68 | 2,64 | |
| Cr | 52,00 | 40,90 | 5,80 | |
| Cu | 29,00 | 30,20 | 3,20 | |
| Ga | 22,00 | 20,49 | 1,50 | |
| Ge | 1,10 | 1,03 | 0,20 | |
| Hf | 2,80 | 3,70 | 0,60 | |
| La | 17,00 | 15,90 | 2,50 | |
| Mo | 2,80 | 1,20 | 0,40 | |
| Nb | 6,00 | 8,30 | 1,30 | |
| Ni | 34,00 | 32,40 | 4,50 | |
| Rb | 22,00 | 18,30 | 1,70 | |
| Sr | 529,00 | 545,00 | 30,50 | |
| Th | 4,30 | 2,60 | 0,40 | |
| V | 109,00 | 106,40 | 10,90 | |
| Y | 13,00 | 16,44 | 2,60 | |
| Zn | 67,00 | 66,90 | 5,50 | |
| Zr | 140,00 | 146,00 | 11,90 |
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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