Round robin tests XRF-analysis XRF Round-robin test PRIS - PRIS S-2, Shale
Study organized by:
Postgraduate Resaerch Institute for Sedimentology (PRIS), Whiteknights, England
Material of proficiency test:
Shale PRIS S-2
Study finished:
1997 - 10
Literature:
Ergbnisprotokoll und Diskette von 08/1998
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| Na₂O | 0,470 | 0,550 | 0,066 | |
| MgO | 2,000 | 2,020 | 0,200 | |
| Al₂O₃ | 14,650 | 14,310 | 0,272 | |
| SiO₂ | 58,350 | 58,910 | 0,866 | |
| P₂O5 | 0,143 | 0,150 | 0,021 | |
| SO₃ | 0,053 | 0,055 | 0,010 | |
| K₂O | 4,330 | 4,260 | 0,119 | |
| CaO | 5,200 | 5,290 | 0,373 | |
| TiO₂ | 0,790 | 0,770 | 0,037 | |
| Fe₂O₃ tot | 6,340 | 6,150 | 0,190 | |
| MnO | 0,091 | 0,093 | 0,007 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| As | 25,00 | 20,00 | 6,10 | |
| Ce | 61,00 | 72,00 | 5,50 | |
| Co | 17,00 | 17,00 | 3,80 | |
| Cr | 98,00 | 91,00 | 23,20 | |
| Cu | 5,00 | 11,00 | 2,70 | |
| Hf | 4,90 | 5,80 | 1,00 | |
| La | 45,00 | 36,00 | 3,80 | |
| Ni | 47,00 | 47,00 | 8,90 | |
| Pb | 14,00 | 22,00 | 7,00 | |
| Rb | 186,00 | 176,00 | 19,10 | |
| Sr | 116,00 | 120,00 | 20,50 | |
| V | 101,00 | 97,00 | 22,20 | |
| Zn | 65,00 | 65,00 | 7,30 | |
| Zr | 213,00 | 193,00 | 59,10 |
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
Order inquiry & contact
Important information
