Analysis of heterocyclic aromatic amines using selective extraction by magnetic molecularly imprinted polymers coupled with liquid chromatography – Mass spectrometry

Shih-Ci Jhu, Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan
Jing-Ying Wang, Department of Chemistry, National Taiwan Normal University, Taipei, Taiwan
Hsueh-Ting Wang, Instrumentation Center, National Taiwan Normal University, Taipei, Taiwan
Sung-Fang Chen, Department of Chemistry, National Taiwan Normal University, Taipei, TaiwanFollow

Keywords

Heterocyclic Amines, LC-MS/MS, Magnetic molecularly imprinted polymers, Solid-phase extraction

Abstract

Heterocyclic aromatic amines (HCAs) are highly carcinogenic and mutagenic chemicals. This study reports on the development of magnetic molecularly imprinted polymers (MMIPs) for the purification and quantification of HCAs. A novel magnetic molecularly imprinted polymer was successfully prepared using a surface molecular imprinting method using functionalized Fe particles as the magnetic cores. 2-Amino-3-methylimidazo[4,5-f]quinoline (IQ) was used as a molecular template; methacrylic acid (MAA), ethylene glycol dimethyl acrylate (EGDMA), 2, 2′-Azobis (2-methylpropionitrile) were used as the functional monomer, crosslinker, and initiator, respectively. The use of the template/functional monomer/crosslinking agent at a ratio of 1:4:20 resulted in a product with better adsorption properties (3.24 mg/g). The HCAs were successfully detected and quantified in processed meat samples by MISPE and LC-MS/MS. Under the final optimized detection conditions, the proposed method offered good linearity (R > 0.995) for the five HCAs with an acceptable level of precision, and an LOQ of 0.05 ng/g was successfully achieved.

Abstract Image

Recommended Citation

Jhu, Shih-Ci; Wang, Jing-Ying; Wang, Hsueh-Ting; and Chen, Sung-Fang (2021) "Analysis of heterocyclic aromatic amines using selective extraction by magnetic molecularly imprinted polymers coupled with liquid chromatography – Mass spectrometry," Journal of Food and Drug Analysis: Vol. 29 : Iss. 4 , Article 14.
Available at: https://doi.org/10.38212/2224-6614.3384