Method for identifying acetohydroxamic acid

The invention discloses a method for identifying acetohydroxamic acid. Relates to the technical field of detection. Comprising the following steps: sample pretreatment: weighing a sample, adding a solvent, centrifuging after extraction, taking supernate, diluting and filtering to obtain a treated sample; and carrying out liquid chromatography-mass spectrometry detection and identification. According to the invention, a liquid chromatography-mass spectrometry identification process of acetohydroxamic acid in flour and a flour treating agent is established. A target compound is directly measured on a machine after being extracted by methanol and diluted by water, and the pretreatment operation is simple. The optimized liquid chromatography-mass spectrometry method is low in solvent effect, quantitative determination is performed by adopting a matrix standard curve external standard method, and experimental steps are simplified. The method is easy to operate, high in sensitivity, good in accuracy, stable, reliab