Detection of veterinary drug residue parameters 222487

10. Determination of low limit, recovery rate, and precision 10.1. Determination of low limit 10.1.1. Liquid chromatography-mass spectrometry/mass spectrometry for the determination of dimethylamine tetracycline, epitetracycline, oxytetracycline, epitetracycline, tetracycline, demethylaureomycin, epitetracycline, aureomycin, methoxytetracycline, and doxycycline all have a low limit of 50 0 pug/kg. 10.1.2 High performance liquid chromatography method: The lower limit for the determination of dimethylamine tetracycline, tetracycline, tetracycline, demethyl tetracycline, tetracycline, and doxycycline is 50.0 μ g/kg. The experimental data for the recovery rate and precision of 10.2 recovery rate and precision method are shown in Table C.1

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