[Rapid screening of 111 pesticides and veterinary drugs in livestock and poultry meat by ultra performance liquid chromatography-quadrupole-time of flight mass spectrometry].

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） above 0.99. The SDLs of all analytes were in the range of 0.5-10 μg/kg， and the proportion of LOQs within the range of 0.5-10 μg/kg were 88.3% and 86.5%， respectively. The compounds quantified in pork and chicken exhibited recoveries of between 60.2% and 100.2%， and 61.1% and 116.7%， respectively， at spiked levels of LOQ， 2×LOQ and 10×LOQ， with relative standard deviations （RSDs） ranging from 1.1% to 13.9% and 1.0% to 14.1%， respectively. Simulated positive samples and commercial livestock and poultry meat samples were screened using an in-house-constructed mass spectrometry database. Commercial samples were screened while enrofloxacin was detected in two pork samples and tilmicosin was detected in one chicken sample， with content in the range of 4.94-29.1 μg/kg. The method developed in this study is advantageous because it involves simple sample processing and is less time consuming than existing methods； consequently， it is suitable for the rapid and high-throughput screening of pesticides and veterinary residues in livestock and poultry meat.

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