Mass spectrometric detection method for pyroxasulfone residue in animal-derived food

Abstract

The invention discloses a mass spectrometric detection method for pyroxasulfone residue in animal-derived food, which comprises the following steps: S1, preparing a standard working solution: sucking a proper amount of 100mg / L standard stock solution, preparing a 1mg / L standard intermediate solution by using acetone, and preserving in a dark place at 0-4 DEG C; a proper amount of 1 mg / L of the standard intermediate solution is sucked, standard working solutions with the concentrations of 0.5 mu g / L, 2 mu g / L, 5 mu g / L, 10 mu g / L and 25 mu g / L are prepared with acetone, and the standard working solutions need to be used when being prepared; s2, pyroxasulfone residues in the sample are extracted with acetonitrile, and impurities are removed through ethylenediamine-N-propyl silanized silica gel, octadecyl bonded silica gel and anhydrous magnesium sulfate. The QuEChERS-gas chromatography triple quadrupole mass spectrometry detection method of pyroxasulfone is established by optimizing chromatographic conditions and investigating the influence of the type of an extraction solvent, a purifying agent and a matrix effect on the recovery rate, so that a detection technical guarantee is provided for pyroxasulfone residues in animal-derived products.

Description

technical field [0001] The invention relates to the technical field of chemical detection, in particular to a mass spectrometry detection method for the residues of sulfofenazone in animal-derived food. Background technique [0002] Sufenapyr is a new broad-spectrum, highly active herbicide for pre-emergence soil treatment developed by Japan Combinator Chemical Company. The herbicide belongs to isoxazole herbicides and is a potential inhibitor of the biosynthesis of very long chain fatty acids (VLCFAs) in plants. Trifenapyr has a wide range of applications and can be safely used in corn, cotton, peanuts, wheat, sunflower, sorghum and other crops; it can effectively control grass weeds such as Setaria, Crabgrass, Barnyardgrass and Amaranth, Broadleaf weeds such as Datura, Solanum, and Abalone. Trifenapyr is considered the best agent for controlling resistant weeds such as ryegrass in countries such as Australia. Rifenapyr has the advantages of broad herbicidal spectrum, hi...

AI Technical Summary

Problems solved by technology

In the prior art, the detection method of metazafenazole residues in soil and water has been established by using high performance liquid chromatography, but there is no report on the analysis method of metazafenazole in meat and other animal-derived foods

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