Development and Optimization of Pre-Concentration Procedure of Rare-Earth Elements (REEs) in Their Minerals,Using Microwave - Assisted Sample Dissolution for ICP-Atomic Emission Spectrometric Detection |
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| Institution: | 1. Departemen of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University Jl. Raya Bandung-Sumedang Km 21, Jatinangor 45363, Sumedang, Indonesia;2. Institut für Anorganische Chemie und Analyitsche Chemie, Universität Mainz, Germany;3. Institut für Anorganische und Angewandte Chemie, Universität Hamburg, Germany |
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| Abstract: | The aim of this research was to develop and optimize a procedure for determination of REEs in xenotime and monazite samples collected from Bangka Island, which were compared to Standard Monazite (71 AG) of Bureau of Analyzed Samples, London. ICP-OES method was used for the determination. The samples were dried and sterilized by heating for a week at 110 °C, before digesting with nitric acid and hydrofluoric acid, using a microwave-assisted digestion system. After a careful line selection, at the detection limits for all REEs in the ng/mL the REEs were reliably obtained at the 0.09 – 38% level. |
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| Keywords: | REEs monazite xenotime pre-concentration microwave ICP-OES |
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