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Microwave Digestion and ICP-MS Determination of Major and Trace Elements in Waste Sm-Co Magnets
| Content Provider | MDPI |
|---|---|
| Author | Korotkova, Natalia A. Baranovskaya, Vasilisa B. Petrova, Kseniya V. |
| Copyright Year | 2022 |
| Description | In this article, inductively coupled plasma mass-spectrometry (ICP-MS) and inductively coupled plasma optical-emission spectrometry (ICP-OES) were used for the development of an analytical procedure for analysis of the waste of Sm-Co magnets. Experimental parameters related to microwave digestion processes and acid concentrations were optimized. Microwave digestion was carried out in mixtures of HF, HCl, $HNO_{3}$ and $H_{2}SO_{4}$. The complete dissolution of the samples occurred in the system: 10 mL $H_{2}$O, 2 mL $HNO_{3}$, 10 mL HCl and 1 mL $H_{2}SO_{4}$. The dependence of the matrix effect on the ICP-MS analysis of waste Sm-Co magnets was studied and optimal instrumental parameters were investigated (nebulizer gas flow, sampling depth and potential at the extractor lens). The optimal conditions were a nebulizer gas flow of 0.85–0.90 L/min, a sampling depth of 101, potential at the extractor lens of −400 V and a sample flow rate of 50 rpm. A recovery test and inter-method experiments were performed to verify the accuracy of the proposed method. |
| Starting Page | 1308 |
| e-ISSN | 20754701 |
| DOI | 10.3390/met12081308 |
| Journal | Metals |
| Issue Number | 8 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-08-04 |
| Access Restriction | Open |
| Subject Keyword | Metals Analytical Chemistry Rare Earth Elements Sm-co Magnets Icp-ms Icp-oes Microwave Digestion |
| Content Type | Text |
| Resource Type | Article |
