High-resolution mass spectrometry method for synchronously detecting 152 chemical pollutants in livestock and poultry meat
A high-resolution mass spectrometry and simultaneous detection technology, applied in the field of detection and analysis of veterinary drug residues, can solve the problems of complex detection methods and low resolution, and achieve the effects of simple processing methods, large detection throughput and high accuracy
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Embodiment 1
[0039] The present invention provides a high-resolution mass spectrometry method for synchronous detection of 152 kinds of chemical pollutants in livestock and poultry meat. Testosterone, 2-aminoflubendazole, 3-methylquinoxaline-2-hydroxy acid, 4-epitridine, 5-hydroxymebendazole, albendazole sulfone, albendazole sulfoxide, albendazole Dazol, ampicillin or ampicillin, baclofen, bambuterol, butafolamine, betamethasone, bourdesonone or bourtisolone, brobuterol, conbendazole, carbadox, caboterol , ceftiofur, chloramphenicol, chlormadinone acetate, aureomycin, ciprobazole, cimaterol, sibuterol, cinoxacin, ciprofloxacin, clenbuterol, gram Rencerol, isoclenpanate, clenbuterol-methyl or clenbuterol, clenbuterol, clindamycin, clonidine, clorprenaline, cloxacillin, cortisone, cyproheptadine , danofloxacin or danofloxacin mesylate, dexamethasone, difloxacin or difloxacin hydrochloride, dimetridazole / demenidazole, hydroxydemenidazole, dobutamine , Doxycycline / Doxycycline, Enoxacin, Enro...
Embodiment 2
[0082] 1. Extraction
[0083] Weigh 5.00g of the sample (accurate to 0.01g) into a 50mL centrifuge tube, add 20mL of 90% acetonitrile extraction solution, ultrasonically extract for 5min, centrifuge at 8000g for 5min, take the supernatant, and set aside.
[0084] 2. Purification
[0085]Take about 2mL of the stock solution and directly pass it through the reversed-phase solid-phase extraction column, and collect the effluent, take 1.6mL of the effluent and dry it with nitrogen at 40°C to 0.5mL, dilute to 1mL with 0.1% formic acid aqueous solution, vortex, 14000r / min Centrifuge for 5 minutes, take the supernatant and detect it in the positive and negative ion switching mode.
[0086] 3. Screening Analysis
[0087] Screening is carried out through the measured values of retention time and accurate mass number. For example, the deviation between the retention time of the detected chromatographic peak and the retention time in the standard mass spectrum library of chemical pol...
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