Wall-stabilised plasma arc applied to the determination of rare earth elements in phosphate samples
| Autor: | Mohamed A. Eid, Soad M. Soleman, Kawsar M. Elbehery, Monir M. Aly, Ahmed A. Fakhry |
|---|---|
| Rok vydání: | 1988 |
| Předmět: |
geography
Materials science Plateau geography.geographical_feature_category Potassium Analytical chemistry Mineralogy chemistry.chemical_element Plasma Phosphate Decomposition Analytical Chemistry Plasma arc welding chemistry.chemical_compound chemistry Deposition (chemistry) Spectroscopy Excitation |
| Zdroj: | Journal of Analytical Atomic Spectrometry. 3:453 |
| ISSN: | 1364-5544 0267-9477 |
| DOI: | 10.1039/ja9880300453 |
| Popis: | A wall-stabilised plasma arc seeded with potassium chloride has been used as an excitation source for the spectrographic determination of rare earth elements in samples of phosphate deposits. The samples were treated with a mixture of HNO3 and HF in a Teflon decomposition vessel and then with H2SO4. The effect of the sample matrix on the excitation temperatures in the plasma and on the analytical curves obtained was studied. The results from the analysis of 12 samples, collected from the Abu Tartur plateau, Western Desert, Egypt, are given. The normalised rare earth patterns reveal a marine environment for deposition. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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