Liquid chromatograph capable of rapidly determining hormone residues in dairy products

Abstract

The invention relates to the technical field of dairy product safety detection, in particular to a liquid chromatograph capable of rapidly determining hormone residues in dairy products, which comprises a detection box, a thermostat, a sample injection box, a sample discharge box and a solvent box, the thermostat is internally provided with the thermostat, the sample injection box is arranged at the top end of the thermostat, and a sample loading groove is formed in the front side wall of the sample injection box; a bearing seat is installed on the bottom end face of the sample loading groove, a rotating shaft is rotatably installed in the bearing seat, a sample tray is fixed to the top end of the rotating shaft, a plurality of container grooves are formed in the upper surface of the sample tray along the circumference, a sampling pipe is led out of the top face of the sample loading groove, and the bottom end of the sampling pipe communicates with a sampling suction head of which the tail end is fixed to a mounting frame; and the top end of the mounting frame is fixed to the telescopic end of the electric push rod, and a tray rotating limiting assembly is further mounted on the mounting frame. According to the invention, hormone residue chromatographic analysis can be carried out on a plurality of samples filled with dairy products, detection data is more comprehensive and accurate, repeated sample loading is not needed, and the use is more convenient.

Description

technical field [0001] The invention relates to the technical field of dairy product safety detection, in particular to a liquid chromatograph capable of rapidly measuring hormone residues in dairy products. Background technique [0002] Dairy products refer to various liquid or solid foods that use milk as the main raw material and are processed by heating, drying, freezing or fermentation. Dairy products can provide comprehensive and balanced nutrition, and provide a material basis for human health, growth and development. According to the results of the fourth national nutrition survey, the most insufficient nutrients in my country's dietary supply are calcium, vitamin A and vitamin B. 2 , and dairy products are the best source or good source of these nutrient chains. Milk contains multifunctional and broad-spectrum protective substances, such as immunoglobulin, lactoferrin, free fatty acids and glycerol monofatty acid esters, etc., which can inhibit pathogenic bacteria...

AI Technical Summary

Problems solved by technology

In the production process of dairy products, liquid chromatography is usually used to detect hormone residues in dairy products. For example, the utility model of patent application number CN201920116560.1 discloses a liquid chromatography that can quickly determine hormone residues in dairy products , including the chromatograph body, the bottom of the detection chamber inside the chromatograph body is fixed with a liquid outlet pipe, the middle part of the liquid outlet pipe is fixed with a solenoid valve, the bottom of the chromatograph body is provided with a waste liquid collection box, and the top of the waste liquid collection box The two sides are detachably connected to the shell of the chromatograph body through the connecting block, and one end of the outlet pipe passes through the shell of the chromatograph body to communicate with the inside of the waste liquid collection box. One side of the waste liquid collection box is fixed with a liquid level A warning light is fixed on the front side of the shell of the chromatograph body. The liquid chromatograph is equipped with a liquid level control switch and controls the warning light. When the waste liquid collection box is about to be filled with waste liquid, Remind the operator to send the waste liquid to the processing station in time to prevent the waste liquid from flowing back into the chromatograph and affect the identification results. However, this utility model still has the following shortcomings: it is necessary to replace and place dairy product samples back and forth to carry out multi-sample hormone residue analysis. Chromatographic analysis is inconvenient to operate, and it is also prone to confusion of sample number records

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