ArticleMikrochimica acta2026
Molecularly imprinted polymer-coated metal-organic cages as ambient ionization probes for rapid detection of aflatoxins in peanut and corn.
Article in Mikrochimica acta, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A novel integrated ion source component based on molecularly imprinted polymer-coated metal-organic cages (SSS@MOC@MIP) was developed for rapid aflatoxin (AFs) detection via ambient mass spectrometry (AMS). By leveraging the synergistic effects of a high-surface-area MOC scaffold which endows the material with exceptional adsorption capacity and specific imprinted cavities, this integrated probe enables simultaneous enrichment, purification, and ionization on a single device. The method effectively suppressed severe matrix interferences from peanut oil and corn starch (matrix effects within ± 15.3%) and achieved a high imprinting factor of 3.27. Under optimized conditions, the SSS@MOC@MIP-AMS method allowed for rapid quantification within 1 min, with low limits of detection (0.11-0.54 µg/kg) and satisfactory recoveries (79.05%-108.29%), and excellent precision with relative standard deviations (RSDs) less than 14.63%. The probe exhibited robust reusability for at least six cycles. Practical application to commercial samples confirmed its reliability, offering a powerful and high-throughput tool for the rapid screening of trace-level aflatoxins in complex food matrices.
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