Integrated pesticide residue detection pretreatment device and pretreatment method

Abstract

The invention provides an integrated pesticide residue detection pretreatment device and a pretreatment method. The device comprises a cup body, a filter, a liquid divider, a jigger, a solid phase extraction column and a test tube, wherein a crushing homogenizer is arranged in the cup body, and the bottom of the cup body is connected with the filter; the liquid divider is arranged on the bottom of the filter to be used for carrying out standing stratification on filter liquid flowing out of the filter, and the bottom of the liquid divider is connected with a three-way valve; the jigger is connected with one opening of the three-way valve to be used for quantitatively collecting a target compound, and the bottom end of the jigger is provided with a second graduating valve; the solid phase extraction column is connected on the bottom of the jigger to be used for eluting the target compound; and the test tube is used for collecting eluent and is also connected with a nitrogen flow system used for concentrating the eluent. The device and the method integrate the processes of crushing, homogenizing, ultrasonic vibrating, suction filtration, liquid-liquid extraction, solid phase extraction, concentrating constant volume and the like; the treatment method is simple and has high efficiency, and the treatment device is convenient and simple, practical and portable and can be used for on-site operation.

Description

Integrated pesticide residue detection pretreatment device and pretreatment method technical field The invention relates to the technical field of pesticide residue pretreatment, in particular to an integrated pesticide residue detection pretreatment device and a pretreatment method. Background technique At present, chemical control is an important measure to prevent and control pests and diseases in agricultural production. Extensive use of pesticides and unreasonable application methods lead to an increase in pesticide residues in agricultural products. Pesticide residues have become an important issue affecting the quality and safety of agricultural products. With the continuous improvement of people's living standards and emphasis on health, food safety issues have increasingly become the focus of people's attention. In order to prevent agricultural products with excessive pesticide residues from entering the market, it is particularly important to detect pesticide r...

AI Technical Summary

Problems solved by technology

The portable pesticide residue rapid detector has good detection performance for standard samples or samples with simple matrix, but for actual samples with complex matrix, the detection results are often unstable, poor reproducibility, and high false positive rate

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