Mesoporous nanometer aluminium oxide solid phase adsorbing agent and preparation method and application thereof

The invention belongs to the field of detection on abamectin pesticides in vegetable agricultural products and preparation and adsorption of a mesoporous nanometer aluminium oxide material, and particularly relates to a mesoporous nanometer aluminium oxide solid phase adsorbing agent and a preparation method and application thereof. The XRD map characteristic peaks of the mesoporous nanometer aluminium oxide solid phase adsorbing agent are 111, 220, 311, 222, 400, 511 and 440, the hole diameter of the agent is 9-16 nm, and the specific surface area of the agent is 115-243 m /g. Compared with traditional neutral alumina, the mesoporous nanometer aluminium oxide has the large specific surface area, the narrow hole diameter distribution, the ordered hole channel structure and the large adsorption capacity. When being utilized as an adsorbing agent of a solid phase extraction column for detecting the residues of abamectin and ivermectin in the vegetable agricultural products, the mesoporous nanometer aluminium oxide solid phase adsorbing agent has the advantages of high recovery rate and accuracy, good cleaning effect, low detecting cost and the like.