This standard specifies two methods for the determination of bismuth content in tungsten concentrates: hydride generation Atomic fluorescence spectrometry, AFS and flame atomic absorption spectroscopy (AAS). The hydride generation method is suitable for the measurement range of 0.0010% to 0.30%, while the flame atomic absorption method is suitable for the measurement range of 0.050% to 0.50%. The standard emphasizes that when the measurement ranges overlap, the use of flame atomic absorption method as an arbitration method ensures the accuracy of bismuth content determination.
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 | 2023-08-06 00:00:00 | Implementation Date | 2024-03-01 00:00:00 |
