Round robin tests XRF-analysis XRF Round-robin test GeoPT 46A, IAG - POLC-1, Phosphate Rock
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT 46A
Material of proficiency test:
POLC-1, Phosphate Rock
Study finished:
2020 - 2
Literature:
Report - GeoPT 46AProficiency Testing Round 46 (Laborcode CRB = F90)
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| MgO | 1,150 | 1,100 | 0,022 | 1,150 |
| Al₂O₃ | 2,340 | 2,380 | 0,040 | -0,500 |
| SiO₂ | 13,600 | 13,370 | 0,181 | 0,640 |
| P₂O5 | 26,700 | 26,580 | 0,320 | 0,180 |
| K₂O | 0,110 | 0,118 | 0,003 | -1,230 |
| CaO | 42,000 | 40,910 | 0,468 | 1,160 |
| TiO₂ | 0,490 | 0,490 | 0,011 | 0,000 |
| Fe₂O₃tot | 6,000 | 5,796 | 0,089 | 1,150 |
| L.O.I. * | 5,910 | 5,910 | 0,090 | 0,000 |
| F * | 1,640 | 1,990 | 0,760 | -0,230 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
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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