Method for simultaneously measuring residual quantity of three types of herbicide in vega soil

Abstract

The invention discloses a method for simultaneously measuring residual quantity of three types of herbicide in vega soil, belonging to the technical field of physicochemical detection of pesticide residue in vega soil. Specifically, acetonitrile is used for extraction, Florisil is carried out with solid phase extraction, a gas chromatograph is matched with an electron capture detector to directlymeasure the residual quantity of three types of herbicide, such as propanil, Rimsulfuron, quizalofop-p-ethyl and the like in vega soil. The invention overcomes the restriction of the defect and the condition of the prior art to optimize the pretreatment method and the instrument detection condition of vega soil samples. Compared with the prior art, the invention has the following favorable advantages that the invention can detect three types of herbicide all at once and has the advantages of simple pretreatment process, high detection sensitivity and good accuracy and reproducibility.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical detection of pesticide residues in tobacco field soil, and mainly relates to the measurement technology of three kinds of pesticide residues in tobacco field soil, such as propanil, metsulfuron-methyl and quizalofop-ethyl, specifically a simultaneous A method for the determination of three different types of herbicide residues in tobacco field soils. Background technique [0002] Propannil, metasulfuron-methyl and quizalofop-ethyl are three herbicides commonly used in farmland, and their main application is to eliminate or control the growth of weeds in agricultural production. Among them: propanil (N-3,4-dichlorophenylpropanamide) is an amide contact type post-emergence herbicide, mainly used to control barnyardgrass and other gramineous weeds in paddy fields; metsulfuron-methyl [1-(4 , 6 dimethoxypyrimidin-2-yl)-3-(3-ethylsulfonyl-2-pyridinesulfonyl)urea] is a sulfonylurea herbici...

AI Technical Summary

Problems solved by technology

This method overcomes the deficiency that the existing methods cannot simultaneously detect three different types of herbicide residues, propanil, metasulfuron-methyl, and quizalofop-p-ethyl, and overcomes the need for different gas chromatographs and liquid chromatographs for traditional detection methods. The condition of the detector is limited, no liquid-liquid extraction treatment is required, and the operation steps are reduced. It can quickly and accurately detect the residues of the three herbicides propanil, sulfomesulfuron and quizalofop-p-ethyl in the soil of the tobacco field. The determination results are accurate and the interference few

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