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Optic–emission spectral quantitative methods
| No | Elements | Test methods | Code of method | Determination range, mg/kg | Test objects | |
| 1 | La Ce Pr, Eu, Gd Nd Sm Tb Dy Ho, Tm Er Yb Y Th Sc |
Optic-emission spectral quantitative method for determination of rare-earth elements, yttrium, thorium and scandium in mineral resources | 100 - 3000 200 - 20000 100 - 10000 300 - 10000 200 - 10000 200 - 4000 150 - 5000 30 - 4000 50 - 4000 3 - 400 10 - 4000 300 - 20000 5 - 2000 |
Rocks, mineral resources | ||
| 2 | Be | Optic-emission spectral quantitative method for determination of beryllium in mineral resources | 5 - 5000 | Rocks, mineral resources | ||
| 3 | Sn | OES-quantitative analytical method for determination of tin in granite type of rocks | 5 - 5000 | Rocks of granite type | ||
| 4 | Ta, Nb | Optic-emission spectral quantitative method for determination of tantalum and niobium | 5 - 1000 | Rocks, mineral resources | ||
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