Round robin tests XRF-analysis XRF Round-robin test GeoPT 47, England - BIM-1, Silty Soil
Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT47
Material of proficiency test:
BIM-1, Silty Soil
Study finished:
2022 - 8
Literature:
Report - GeoPT47 Proficiency Testing Round 47 (Laborcode CRB = H119)
major elements [wt %]
| CRB | RV | 1sRV | Z-Score | |
| SiO₂ | 72,190 | 72,260 | 0,759 | -0,050 |
| TiO₂ | 0,300 | 0,296 | 0,007 | 0,300 |
| Al₂O₃ | 14,120 | 14,090 | 0,189 | 0,080 |
| Fe₂O₃tot | 2,470 | 2,451 | 0,043 | 0,220 |
| MnO | 0,062 | 0,060 | 0,002 | 0,550 |
| MgO | 0,380 | 0,386 | 0,009 | -0,310 |
| CaO | 1,160 | 1,150 | 0,023 | 0,220 |
| Na₂O | 3,680 | 3,660 | 0,060 | 0,170 |
| K₂O | 4,740 | 4,709 | 0,075 | 0,210 |
| P₂O5 | 0,136 | 0,134 | 0,004 | 0,290 |
| L.O.I. * | 0,610 | 0,590 | 0,120 | 0,070 |
| F * | 0,104 | 0,107 | 0,013 | -0,130 |
trace elements [µg/g]
| CRB | RV | 1sRV | Z-Score | |
| Ba | 325,00 | 346,90 | 11,51 | -0,95 |
| Cr | 188,00 | 193,00 | 6,99 | -0,36 |
| Ga | 25,00 | 22,50 | 1,11 | 1,13 |
| Hf | 5,40 | 4,97 | 0,31 | 0,70 |
| Nb | 19,00 | 15,50 | 0,82 | 2,10 |
| Pb | 26,00 | 24,50 | 1,21 | 0,64 |
| Rb | 258,00 | 272,00 | 9,36 | -0,75 |
| Sr | 113,00 | 111,00 | 4,37 | 0,23 |
| Y | 35,00 | 25,30 | 1,24 | 3,93 |
| Zn | 57,00 | 53,60 | 2,36 | 0,72 |
| Zr | 170,00 | 167,40 | 6,17 | 0,21 |
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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