Full-automatic QuEChERS preprocessing all-in-one machine and preprocessing method

Abstract

The invention relates to a full-automatic QuEChERS preprocessing all-in-one machine and a preprocessing method. The preprocessing all-in-one machine comprises a reagent container, wherein the reagent container is connected with a container distributor; the container distributor extends out to form liquid discharge pipes; the liquid discharge pipes are connected with a plurality of extracting centrifugal pipes; each extracting centrifugal pipe is connected with an impurity-removing centrifugal pipe through a first guide pipe; the preprocessing all-in-one machine further comprises pulverizers and an inner sucking pump; the pulverizers pulverize samples in the extracting centrifugal pipes; the inner sucking pump pumps a supernatant liquor in the centrifugal pipes into the impurity-removing centrifugal pipes; the impurity removing centrifugal pipes are connected with filters through second guide pipes; the supernatant liquor in the impurity removing centrifugal pipes is pressurized by a pressure pump and enters sample introduction containers through the filters. The preprocessing all-in-one machine combines the process of sample pulverization, liquid adding, extraction, centrifugal separation and solid phase extraction into one, saves time, simplifies operation and steps, reduces errors, and is efficient and high in safety.

Description

technical field [0001] The invention relates to the technical field of QuEChERS pretreatment, in particular to a fully automatic QuEChERS pretreatment integrated machine and a pretreatment method. Background technique [0002] The development of agricultural industrialization makes the production of agricultural products more and more dependent on exogenous substances such as pesticides, antibiotics and hormones. The amount of pesticides used in agricultural products in my country remains high, and the unreasonable use of these substances will inevitably lead to excessive pesticide residues in agricultural products, affecting the safety of consumers, and in severe cases, it will cause consumers to become ill, develop abnormally, and even directly lead to poisoning die. Excessive pesticide residues will also affect the trade of agricultural products. Countries all over the world attach great importance to the issue of pesticide residues, and have set increasingly strict limit...

AI Technical Summary

Problems solved by technology

[0006] Although the QuEChERS method has many advantages above, it still requires a lot of time and personnel, and the pretreatment efficiency needs to be improved. There are external interference factors such as the volatilization of pesticides and photodegradation, pollution, and the safety brought by the contact between acetonitrile and personnel. question

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