Review Article

Magnetic Solid Phase Extraction Applied to Food Analysis

Table 4

Experimental MSPE conditions used for analysis of cereal samples.

AnalyteAmount of liquid sample Magnetic material coatingEluent volumeEluentTechniqueLimit of detectionRecoveryReferences

Ochratoxin A
(cereals products)
850.0 µLAptamer for ochratoxin, immobilized onto magnetic nanospheres2.5 mL95% acetonitrile (1% acetic acid)LC-Fl0.3 µg/kg67.20–87.80%[57]

Ochratoxin A
(rice, wheat, and corn)
50.0 mLFe3O4-3-(trimethoxysilyl)-1-propanethiol and modified by ethylene glycol bismercaptoacetate2.0 mLThioureaHPLC-FLD0.03–2.6 ng/mL84.0–96.0%[59]

Copper
(rice)
≈32.0 mLFe3O4@Sio2@ poly(allylaminehydrochloride)-poly(ethylene-alt-maleic anhydride)2.0 mLHydrochloric acid
(1.0 mol/L)
AAS0.23 ng/mL94.4–114.1% [35]

Silver, cadmium, copper, mercury, and lead100.0 mLEthylene glycol
bismercaptoacetate modified 3-(trimethoxysilyl)-1-propanethiol@Fe3O4 nanoparticles
1.0 mLHydrochloric acid
1 mol/L (5% thiourea)
ICP-OES, AAS0.01–0.09 ng/mL95.4–99.8%[37]

Zinc50.0 mLZinc imprinted polymer-2-vinylpyridine-ethylene glycol dimethacrylate14.0 mLHydrochloric acid (12% v/v)AAS0.15 mg/L95.0–99.0% [38]

Mycotoxin and Metal ions.