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Optic–emission spectral semi-quantitative methods
"Method of flowing samples through arc" is suitable for analysis of metallometric (geochemical) samples and "Evaporation method of samples from carbon electrode" is suitable for analysis of rocks, ores, concentrates, dry residue of water and coal fly-ash.
(Sensitivity of elements)
| No | Elements | Sensitivity, mg/kg | |
| Evaporation method of samples from carbon electrode* | Method of flowing samples through arc* | ||
| 1 | As | 100 | 70 |
| 2 | Al | 3 | 3 |
| 3 | Ag | 0.1 | 0.1 |
| 4 | Ba | 100 | 200 |
| 5 | Be | 1 | 2 |
| 6 | Bi | 2 | 1 |
| 7 | Ca | 3 | 10 |
| 8 | Cd | 10 | 2 |
| 9 | Cr | 5 | 7 |
| 10 | Cu | 1 | 2 |
| 11 | Co | 5 | 2 |
| 12 | Ce | 100 | 200 |
| 13 | Fe | 3 | 1 |
| 14 | Ga | 1 | 5 |
| 15 | Ge | 2 | 1 |
| 16 | Hf | 20 | 100 |
| 17 | In | 5 | 1 |
| 18 | La | 20 | 50 |
| 19 | Li | 30 | 30 |
| 20 | Mg | 1 | 3 |
| 21 | Mn | 5 | 10 |
| 22 | Mo | 1 | 1 |
| 23 | Na | 300 | 300 |
| 24 | Nb | 5 | 7 |
| 25 | Ni | 1 | 2 |
| 26 | P | 1000 | 700 |
| 27 | Pb | 2 | 2 |
| 28 | Si | 3 | 3 |
| 29 | Sb | 20 | 20 |
| 30 | Sc | 2 | 5 |
| 31 | Sr | 100 | 200 |
| 32 | Sn | 1 | 1 |
| 33 | Ta | 70 | 100 |
| 34 | Te | 300 | 300 |
| 35 | Tl | 7 | 2 |
| 36 | Ti | 5 | 10 |
| 37 | Th | 100 | 300 |
| 38 | U | 70 | 100 |
| 39 | V | 3 | 3 |
| 40 | W | 5 | 3 |
| 41 | Zn | 20 | 10 |
| 42 | Zr | 10 | 50 |
| 43 | Y | 3 | 10 |
| 44 | Yb | 1 | 2 |
* - Method accredited in international level
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