This standard specifies a method for the spectrophotometric determination of silicon content in rare earth ferroalloys under the condition of dilute acid dissolving. Applicable to rare earth ferroalloys with a silicon content in the range of 0.005% to 0.20%. Absorbance is calculated by forming a silicon-molybdenum heteropolyacid complex and measuring its silicon content.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | H14 | ICS | 77.120.99 |
| Release Date | 2023-05-23 00:00:00 | Implementation Date | 2023-12-01 00:00:00 |