Voltammetric and Spectroscopic Determination of Rare Earth Elements in Fresh and Surface Water Samples
| Autor: | Charlton van der Horst, Vernon Somerset, Emmanuel I. Iwuoha, Martin Makombe, Bongiwe Silwana |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Accuracy and precision Materials science Stripping (chemistry) rare earths elements Praseodymium Analytical chemistry chemistry.chemical_element 010501 environmental sciences 01 natural sciences lcsh:TD1-1066 Tap water Lanthanum lcsh:Environmental technology. Sanitary engineering Voltammetry Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences General Environmental Science Detection limit Renewable Energy Sustainability and the Environment tap water surface water Cerium chemistry alizarin complexon (ALC) 010606 plant biology & botany adsorptive differential pulse stripping voltammetry |
| Zdroj: | Environments Volume 5 Issue 10 Environments, Vol 5, Iss 10, p 112 (2018) |
| ISSN: | 2076-3298 |
| DOI: | 10.3390/environments5100112 |
| Popis: | The increasing demand for rare earth elements in green technology, electronic components, petroleum refining, and agricultural activities has resulted in their scattering and accumulation in the environment. This study determined cerium, lanthanum and praseodymium in environmental water samples with the help of adsorptive differential pulse stripping voltammetry (AdDPSV) and inductive coupled plasma-optical emission spectroscopy (ICP-OES). A comparison of the results of these two analytical techniques was also made. The accuracy and precision of the methods were evaluated by spiking water samples with a known amount of REEs. The detection limit obtained for the stripping analysis was 0.10 &mu g/L for Ce(III), and 2.10 &mu g/L for combined La(III) and Pr(III). The spectroscopic method of determination by ICP-OES was applied to the same samples to evaluate the effectiveness of the voltammetry procedure. The ICP-OES detection limit obtained was 2.45, 3.12 and 3.90 &mu g/L for Ce(III), La(III) and Pr(III), respectively. The results obtained from the two techniques showed low detection limits in voltammetry the ICP-OES method achieved better simultaneous analysis. This sensor has been successfully applied for the determination of cerium, lanthanum, and praseodymium in environmental water samples, offering good results. |
| Databáze: | OpenAIRE |
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