Round robin tests XRF-analysis XRF Round-robin test GeoPT15 - MSAN, Ocean Floor Sediment
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT15
Material of proficiency test:
MSAN, Ocean Floor Sediment
Study finished:
2004 - 8
Literature:
Preliminary Report - GeoPT15 Proficiency Testing Round
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 4,250 | 4,220 | 0,070 | --- |
| MgO | 3,660 | 3,680 | 0,060 | --- |
| Al₂O₃ | 15,470 | 15,700 | 0,210 | --- |
| SiO₂ | 54,150 | 54,730 | 0,600 | --- |
| P₂O5 | 0,263 | 0,260 | 0,006 | --- |
| SO₃ | 0,142 | --- | --- | |
| K₂O | 1,400 | 1,410 | 0,030 | --- |
| CaO | 5,630 | 5,530 | 0,090 | --- |
| TiO₂ | 1,120 | 1,110 | 0,020 | --- |
| Fe₂O₃ tot | 8,220 | 8,060 | 0,120 | --- |
| MnO | 0,143 | 0,560 | 0,004 | --- |
| L.O.I. | 4,490 | --- | --- |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| As | 5,00 | 7,30 | 0,40 | --- |
| Ba | 286,00 | 273,00 | 9,40 | --- |
| Co | 21,00 | 23,70 | 1,20 | --- |
| Cr | 69,00 | 77,40 | 3,20 | --- |
| Cu | 55,00 | 59,40 | 2,60 | --- |
| Ga | 16,00 | 17,60 | 0,90 | --- |
| Nb | 6,00 | 6,25 | 0,38 | --- |
| Ni | 29,00 | 29,00 | 1,40 | --- |
| Pb | 21,00 | 17,40 | 0,90 | --- |
| Rb | 28,00 | 21,90 | 1,60 | --- |
| Sr | 381,00 | 361,40 | 101,90 | --- |
| V | 216,00 | 197,90 | 7,10 | --- |
| Zn | 87,00 | 92,60 | 3,70 | --- |
| Zr | 132,00 | 139,70 | 5,30 | --- |
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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