Development and optimization of a novel sample preparation method cored on functionalized nanofibers mat-solid-phase extraction for the simultaneous efficient extraction of illegal anionic and cationic dyes in foods
| Autor: | Ningge Jian, Liangliang Qian, Qian Xu, Feifei Qi, Wei-Xin Cao, Jian Li |
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| Rok vydání: | 2017 |
| Předmět: |
Sorbent
Polymers Acrylic Resins Nanofibers Food Contamination 02 engineering and technology 01 natural sciences Biochemistry Analytical Chemistry chemistry.chemical_compound Adsorption Column chromatography Limit of Detection Pyrroles Sample preparation Response surface methodology Solid phase extraction Coloring Agents Detection limit Chromatography Benzenesulfonates Solid Phase Extraction 010401 analytical chemistry Polyacrylonitrile 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry Benzophenoneidum p-Aminoazobenzene 0210 nano-technology Azo Compounds Food Analysis |
| Zdroj: | Analytical and Bioanalytical Chemistry. 409:5697-5709 |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-017-0510-8 |
| Popis: | A simple and efficient three-step sample preparation method was developed and optimized for the simultaneous analysis of illegal anionic and cationic dyes (acid orange 7, metanil yellow, auramine-O, and chrysoidine) in food samples. A novel solid-phase extraction (SPE) procedure based on nanofibers mat (NFsM) was proposed after solvent extraction and freeze-salting out purification. The preferred SPE sorbent was selected from five functionalized NFsMs by orthogonal experimental design, and the optimization of SPE parameters was achieved through response surface methodology (RSM) based on the Box-Behnken design (BBD). Under the optimal conditions, the target analytes could be completely adsorbed by polypyrrole-functionalized polyacrylonitrile NFsM (PPy/PAN NFsM), and the eluent was directly analyzed by high-performance liquid chromatography-diode array detection (HPLC-DAD). The limits of detection (LODs) were between 0.002 and 0.01 mg kg−1, and satisfactory linearity with correlation coefficients (R > 0.99) for each dye in all samples was achieved. Compared with the Chinese standard method and the published methods, the proposed method was simplified greatly with much lower requirement of sorbent (5.0 mg) and organic solvent (2.8 mL) and higher sample preparation speed (10 min/sample), while higher recovery (83.6–116.5%) and precision (RSDs |
| Databáze: | OpenAIRE |
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