Abstract
The development of different matrix adsorbents is a research focus in the multiresidue analysis of veterinary drugs in foods. In this study, a novel elastic matrix adsorbent based on a reduced graphene oxide-coated melamine sponge was prepared and applied in matrix purification for the simultaneous determination of 52 veterinary drugs in mutton by UPLC–MS/MS. Efficient and convenient matrix removal was achieved through simple soaking and squeezing. Good linearities with determination coefficients ≥0.999 and low matrix effects ≤±13% were obtained in the range of 10–500 μg·kg−1. The obtained recoveries ranged from 63.7% to 109.5% at three spiked levels (10, 50, and 100 μg·kg−1), with relative standard deviations ≤8.1%. Low LODs and LOQs were obtained in ranges of 0.02–2.0 μg·kg−1 and 0.05–5.0 μg·kg−1, respectively. Based on the comprehensive results, our developed method showed good applicability in the analysis of multiresidues in various foods.
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