Method for detecting residual veterinary drugs in meat product by combining magnetic graphene solid-phase extraction with liquid chromatograph-mass spectrometer

The invention provides a method for detecting residual veterinary drugs in a meat product by combining magnetic graphene solid-phase extraction with liquid chromatograph-mass spectrometer. The method comprises the steps that firstly, solid-phase extraction is conducted by taking magnetic graphene as an adsorbent; secondly, HPLC-MS/MS determination and analysis are conducted. According to the method, operation is easy, rapidness and high efficiency are achieved, and the sample pretreatment time is greatly saved; solid-phase extraction is conducted by taking magnetic graphene as the adsorbent, therefore, the cost is reduced, and the recovery rate is high; by combining HPLC-MS/MS determination and analysis, retention time information and molecular structure information of a target compound can be simultaneously provided, the sensitivity is high, and quantitative analysis and qualitative confirmation can be conducted; the method has the advantages of being good in repeatability and operability, simple, economical