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Method for detecting residue of Metalaxyl, badistan, thiophanate-methyl in vegetable

A technology of thiophanate-methyl and a detection method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of unsatisfactory detection sensitivity and complicated working steps, and achieve high accuracy, good effect, and few interference factors Effect

Inactive Publication Date: 2007-05-09
南通市农产品质量检验测试中心
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Problems solved by technology

[0002] In the prior art, the detection methods for metalaxyl, carbendazim, and thiophanate-methyl residues in vegetables generally can only detect the residue of one pesticide at a time, and the three pesticides need to be detected at least three times, and the working steps are complicated. , the detection sensitivity is not ideal

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  • Method for detecting residue of Metalaxyl, badistan, thiophanate-methyl in vegetable
  • Method for detecting residue of Metalaxyl, badistan, thiophanate-methyl in vegetable
  • Method for detecting residue of Metalaxyl, badistan, thiophanate-methyl in vegetable

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Embodiment Construction

[0037] A method for detecting metalaxyl, carbendazim, and thiophanate-methyl residues in vegetables, comprising the following steps in turn:

[0038] ① Sampling: Take no less than 1000g of vegetable samples, take the edible part, gently wipe off the attachments on the surface of the sample, use the diagonal division method, take the diagonal part, chop it, mix it well and put it into a food processor Pulverize with a machine, make samples, and put them into sub-packaging containers for standby;

[0039] ②Extraction: Accurately weigh 20g of vegetable samples, add 20ml of acetonitrile, homogenate in a homogenizer (model: IKA-T25) and filter with filter paper, collect the filtrate into a 50ml stoppered measuring cylinder containing 3g to 5g of sodium chloride , after vigorous shaking, stand at room temperature for 10 minutes to separate the acetonitrile phase and the aqueous phase;

[0040] ③ Condition the amino column (500 mg; 6 ml; manufactured by Agilent) with 5 ml of acetoni...

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Abstract

A method for detecting residual of methylin and carbendazim as well as methosufate in vegetables includes steps of sampling, extracting, preparing standard curve and detecting; utilizing 236nm as detection wavelength for detecting out residuals of three said agricultural chemicals in vegetables in only one time of detection.

Description

Technical field: [0001] The invention relates to a method for detecting the amount of fungicide and pesticide in vegetables. Background technique: [0002] In the prior art, the detection methods for metalaxyl, carbendazim, and thiophanate-methyl residues in vegetables generally can only detect the residue of one pesticide at a time, and the three pesticides need to be detected at least three times, and the working steps are complicated. , and the detection sensitivity is not ideal. Invention content: [0003] The object of the present invention is to provide a kind of metalaxyl, carbendazim, and thiophanate-methyl that can detect metalaxyl, carbendazim, and thiophanate-methyl remaining in vegetables at one time, which is convenient for detection and high in accuracy. The detection method of Lingling residues in vegetables. [0004] Technical solution of the present invention is: [0005] A method for detecting metalaxyl, carbendazim, and thiophanate-methyl residues in ...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N1/04G01N30/06
Inventor 殷春杭钱允辉
Owner 南通市农产品质量检验测试中心
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