A digital capture movie-based robotized Flow-batch luminometer for in-line magnetic nanoparticle solid phase extraction and chemiluminescent measurement
| Autor: | Lucivânia A.O. Navarro, Wellington da Silva Lyra, Renato A.N. Andrade, Pedro Lemos De Almeida Júnior, Ricardo Chaves Lima, Amália G.G. Pessoa, Francisco Antônio da Silva Cunha, Stéfani Iury E. Andrade, Mário César Ugulino de Araújo |
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| Rok vydání: | 2020 |
| Předmět: |
Chromatography
Materials science 010401 analytical chemistry Extraction (chemistry) Nanoparticle 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Luminol Catalytic effect law.invention chemistry.chemical_compound chemistry law Solid phase extraction Sodium dodecyl sulfate 0210 nano-technology Spectroscopy Chemiluminescence |
| Zdroj: | Microchemical Journal. 153:104387 |
| ISSN: | 0026-265X |
| DOI: | 10.1016/j.microc.2019.104387 |
| Popis: | The advantages of chemiluminescence, digitally captured movies, magnetic solid-phase extraction (MSPE) and a robotized Flow-batch system were united to develop a new automated luminometer. This digital movie-based robotized Flow-batch luminometer was successfully applied for in-line MSPE, and sensitive, selective determination of Cu2+ in Cachaca (a distilled spirit made from fermented sugarcane juice). Magnetic Fe3O4@Al2O3 nanoparticles immobilized with 1-(2-pyridylazo)-2-naphthol and sodium dodecyl sulfate were employed as magnetic adsorbents. The catalytic effect of Cu2+ on luminol oxidation using H2O2 in alkaline medium was employed to generate the chemiluminescent signals, which were measured via digital movies. The method presented satisfactory analytical features when compared with previous studies, yielding: LOD = 7 μg L−1, recovery rates = 94.8–106.5%, RSD |
| Databáze: | OpenAIRE |
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