Fluorescence assay of oxytetracycline in seawater after selective capture using magnetic molecularly imprinted nanoparticles
| Autor: | Ziru Lian, Min Zhao, Jiangtao Wang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Sorbent Oxytetracycline 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Matrix (chemical analysis) Molecular Imprinting Adsorption Seawater Solid phase extraction Chromatography High Pressure Liquid 0105 earth and related environmental sciences chemistry.chemical_classification Detection limit Chromatography 010604 marine biology & hydrobiology Solid Phase Extraction Molecularly imprinted polymer Polymer Pollution chemistry Nanoparticles |
| Zdroj: | Marine pollution bulletin. 163 |
| ISSN: | 1879-3363 |
| Popis: | A comprehensive strategy for manufacturing a novel sorbent based on magnetic molecularly imprinted polymers (MMIPs) is addressed for selective capture of oxytetracycline from seawater. The novel MMIPs were synthesized by nano-Fe3O4 as sacrificial matrix and adsorption properties of the polymers demonstrate rapid adsorption kinetics, high adsorption capacity, and specificity towards oxytetracycline provided by the core-shell composite structure. After screening the critical parameters by multivariate optimization, a magnetic imprinting solid phase extraction method combined with fluorescence spectrophotometry (MMIP-SPE-FL) was constructed for sensitive determination of oxytetracycline in seawater samples. The results show a good linear response dependence on the spiking concentration of 3–100 μg L−1, and a satisfactory limit of detection of 0.7 μg L−1 after the MMIP-SPE preconcentration. Seven seawater samples from Jiaozhou bay were analyzed to give recoveries in the range of 89.75–107.65% with relative standard deviation values of less than 5.44% (n = 3). |
| Databáze: | OpenAIRE |
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