Round robin tests XRF-analysis XRF Round-robin test GeoPT 44A, England - CM-1, Carbonate Mudrock
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT44A
Material of proficiency test:
CM-1, Carbonate Mudrock
Study finished:
2019 - 1
Literature:
Report - GeoPT44A Proficiency Testing Round 44A (Laborcode CRB = D46)
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| MgO | 1,410 | 1,370 | 0,011 | 0,710 |
| Al₂O₃ | 1,340 | 1,240 | 0,022 | 1,520 |
| SiO₂ | 5,710 | 5,780 | 0,089 | 1,430 |
| P₂O5 | 0,066 | 0,061 | 0,002 | 1,350 |
| K₂O | 0,230 | 0,219 | 0,010 | 0,100 |
| CaO | 50,600 | 50,180 | 0,532 | 0,380 |
| TiO₂ | 0,050 | 0,045 | 0,002 | 1,740 |
| Fe₂O₃tot | 0,310 | 0,360 | 0,008 | 1,980 |
| MnO | 0,027 | 0,024 | 0,001 | 1,620 |
| L.O.I. * | 39,830 | 40,160 | 0,460 | -0,360 |
| TC * | 11,290 | 11,290 | 0,170 | 0,000 |
| CO₂* | 40,200 | 39,900 | 0,432 | 0,290 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Sr | 1024,00 | 1010,00 | 9,90 | 0,25 |
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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