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Chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials (alternative to the X-ray fluorescence method) -- Flame atomic absorption spectrometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES)
This part of ISO 20565 specifies flame atomic absorption spectrometry (FAAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) methods for the chemical analysis of chrome-bearing refractory products and chrome-bearing raw materials.
It is applicable in the ranges of determination given in Table 1.
ISO 20565 gives alternatives to the X-ray fluorescence (XRF) method given in ISO 12677.
Table 1 — Range of determination (% by mass)
| Component | Range |
|---|---|
| SiO2 | 0,5 to 10 |
| Al2O3 | 2 to 30 |
| Fe2O3 | 0,5 to 25 |
| TiO2 | 0,01 to 1 |
| MnO | 0,01 to 1 |
| CaO | 0,01 to 3 |
| MgO | 15 to 85 |
| Na2O | 0,01 to 1 |
| K2O | 0,01 to 1 |
| Cr2O3 | 2 to 60 |
| ZrO2 | 0,01 to 0,5 |
| P2O5 | 0,01 to 5 |
| LOI | −0,5 to 5 |
NOTE These values are after the loss on ignition (LOI) has been taken into account.
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