GB/T 18115.4-2021 Active
GB/T 18115.4-2021 Chemical analysis methods of rare earth impurities in rare earth metals and their oxides—Part 4:Determination of lanthanum,cerium,praseodymium,samarium,europium,gadolinium,terbium,dysprosium,holmium,erbium,thulium,ytterbium,lutetium and yttrium contents in neodymium metal and oxide
Abstract
This document specifies the method for determining the content of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium in neodymium.
This document is applicable to the determination of the content of lanthanum, cerium, praseodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium in neodymium metal.
This document is also applicable to the determination of the content of lanthanum oxide, cerium oxide, praseodymium oxide, samarium oxide, europium oxide, gadolinium oxide, terbium oxide, dysprosium oxide, holmium oxide, erbium oxide, thulium oxide, ytterbium oxide, lutetium oxide, and yttrium oxide in neodymium oxide.
This document includes three methods: inductively coupled plasma atomic emission spectrometry (ICP-OES, Method 1), inductively coupled plasma mass spectrometry (ICP-MS, Method 2), and inductively coupled plasma tandem mass spectrometry (ICP-MS-MS, Method 3). The determination range of Method 1 is shown in Table 1, and the determination ranges of Method 2 and Method 3 are shown in Table 2.
When the analysis ranges of the three methods overlap, Method 2 shall be preferentially used as the arbitration method.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 18115.4-2021 |
| CCS | Analysis methods for rare metals and their alloys |
| ICS | Other non-ferrous metals and their alloys |
| Implement Date | 2022-05-01 |