Review Article
Magnetic Solid Phase Extraction Applied to Food Analysis
Table 4
Experimental MSPE conditions used for analysis of cereal samples.
| Analyte | Amount of liquid sample | Magnetic material coating | Eluent volume | Eluent | Technique | Limit of detection | Recovery | References |
| Ochratoxin A (cereals products) | 850.0 µL | Aptamer for ochratoxin, immobilized onto magnetic nanospheres | 2.5 mL | 95% acetonitrile (1% acetic acid) | LC-Fl | 0.3 µg/kg | 67.20–87.80% | [57] |
| Ochratoxin A (rice, wheat, and corn) | 50.0 mL | Fe3O4-3-(trimethoxysilyl)-1-propanethiol and modified by ethylene glycol bismercaptoacetate | 2.0 mL | Thiourea | HPLC-FLD | 0.03–2.6 ng/mL | 84.0–96.0% | [59] |
| Copper (rice) | ≈32.0 mL | Fe3O4@Sio2@ poly(allylaminehydrochloride)-poly(ethylene-alt-maleic anhydride) | 2.0 mL | Hydrochloric acid (1.0 mol/L) | AAS | 0.23 ng/mL | 94.4–114.1% |
[35] |
| Silver, cadmium, copper, mercury, and lead | 100.0 mL | Ethylene glycol bismercaptoacetate modified 3-(trimethoxysilyl)-1-propanethiol@Fe3O4 nanoparticles | 1.0 mL | Hydrochloric acid 1 mol/L (5% thiourea) | ICP-OES, AAS | 0.01–0.09 ng/mL | 95.4–99.8% | [37] |
| Zinc | 50.0 mL | Zinc imprinted polymer-2-vinylpyridine-ethylene glycol dimethacrylate | 14.0 mL | Hydrochloric acid (12% v/v) | AAS | 0.15 mg/L | 95.0–99.0% |
[38] |
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Mycotoxin and Metal ions.
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