GB/T 12690.19-2018 Active
GB/T 12690.19-2018 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 19:Determination of arsenic and mercury contents
Abstract
This part of GB/T 12690 specifies the determination methods for arsenic and mercury in rare earth metals and their oxides.
This part is applicable to the determination of arsenic and mercury in rare earth metals and their oxides. It includes two methods: Method 1, inductively coupled plasma mass spectrometry; Method 2, atomic fluorescence. The determination range of Method 1 is 0.0005% to 0.010%; the determination range of Method 2 is: arsenic 0.0005% to 0.010%; mercury 0.000005% to 0.001%. When the determination ranges of Method 1 and Method 2 overlap, Method 2 shall be used as the arbitration method.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 12690.19-2018 |
| CCS | Analysis methods for rare metals and their alloys |
| ICS | Other non-ferrous metals and their alloys |
| Implement Date | 2019-06-01 |