Determination of tetraniliprole residues in animal derived foods by multi-plug filtration cleanup combined with HPLC-MS/MS
[Objective]This study aimed to develop a rapid and efficient method for quantifying tetraniliprole residues in animal-derived foods by combining multi-plug filtration cleanup(m-PFC)with high-performance liquid chromatography-mass spectrometry(HPLC-MS).[Methods]Samples were extracted with acetonitrile,followed by salting out using sodium chloride and anhydrous magnesium sulfate.The extracts were purified via m-PFC and analyzed using HPLC-MS with external standard calibration.[Results]The method demonstrated a strong linear correlation between tetraniliprole concentration and response values over a range of 0.001 to 0.150 mg/L,with a coefficient of determination(R2)exceeding 0.999.The limit of quantification(LOQ)was 0.002 mg/kg.Average recovery rates ranged from 90.0%to 108.0%,with relative standard deviations between 1.10%and 4.89%,validated across a variety of matrices,including pork,beef,mutton,chicken,pork liver,beef liver,mutton liver,chicken liver,eggs and milk.[Conclusion]The proposed method is rapid,straightforward,high sensitivity,and suitable for quantitative determination of tetraniliprole residues in animal-derived food.
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