Method for rapidly screening farm chemical residues in vegetables

Abstract

The invention discloses a method for rapidly screening farm chemical residues in vegetables. The method comprises the following steps: step 1, sample pretreatment; step 2, chlorophyll removal; step 3, qualitative analysis; step 4, quantitative analysis. In the first step, firstly, vegetable leaves of leaf vegetables are cut into pieces and put into a homogenizer to be ground uniformly, and part of pulp with skins of solanaceous vegetables, bulbs, brassica vegetables, melons and legume vegetables is put into the homogenizer to be ground uniformly, so that a sample is prepared. The method is safe and reliable, the screening method is high in screening speed and convenient to use, chlorophyll can be conveniently removed before screening by adding the step of removing chlorophyll in vegetables, sensitivity is improved, screening is convenient, and by using the screening method, 83 farm chemicals with high toxicity, common use and high residual risk and metabolite parameters thereof can be conveniently screened out, the types of the farm chemicals capable of being screened out are more comprehensive, and the method is convenient to popularize and use.

Description

technical field [0001] The invention relates to the technical field of pesticide detection, in particular to a rapid screening method for pesticide residues in vegetables. Background technique [0002] With the development of agricultural industrialization, the production of agricultural products is increasingly dependent on the use of pesticides. However, unreasonable use of pesticides will inevitably lead to excessive pesticide residues in agricultural products and affect the safety of consumers; therefore, for pesticide residue screening methods There are certain requirements, but the existing screening methods for pesticide residues are relatively complicated and take a long time to screen; most of the existing screening methods do not include the step of removing chlorophyll, which is likely to affect the screening sensitivity; and There are few types of pesticides that can be detected and it is inconvenient to use. Therefore, it is very necessary to invent a rapid scre...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a rapid screening method for pesticide residues in vegetables to solve the problems in the above-mentioned background technology that the screening takes a long time, that chlorophyll has an impact on the screening results, and that there are fewer types of pesticides that can be detected.

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