Anti-oxidation u-shaped surface enhanced Raman substrate coating device and method for monitoring vegetable pesticide residues

A surface-enhanced Raman, coating device technology, applied in Raman scattering, material excitation analysis, etc., can solve the problems of lack of integrated operation, oxidative decomposition, detachment, etc., to ensure consistency, overcome easy oxidation, and prevent damage. Effects of photolysis and oxidation

Active Publication Date: 2019-08-20
SOUTH CHINA UNIV OF TECH
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  • Abstract
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Problems solved by technology

However, the links of substrate dispensing and pesticide residue detection are separated, and the substrate will be oxidized and decomposed if left for a long time, lacking integrated operation

Method used

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  • Anti-oxidation u-shaped surface enhanced Raman substrate coating device and method for monitoring vegetable pesticide residues
  • Anti-oxidation u-shaped surface enhanced Raman substrate coating device and method for monitoring vegetable pesticide residues
  • Anti-oxidation u-shaped surface enhanced Raman substrate coating device and method for monitoring vegetable pesticide residues

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Embodiment Construction

[0035] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

[0036] Such as figure 1 As shown, the anti-oxidation U-shaped surface-enhanced Raman substrate coating device for monitoring vegetable pesticide residues includes a coating working device 1 , a Raman monitoring device 2 , a substrate storage box 3 and an electronic control unit 4 .

[0037] The coating working device 1 includes a coater 1-1, a working disk 1-2, a working disk driving device 1-3, a support 1-4 and No. 1 positioning sensor 1-5; the shape of the support 1-4 is concave structure; the top of the concave structure is connected to a U-shaped shelf with an opening facing downwards, and the two ends of the U-shaped shelf are respectively provided with a downward-facing Raman probe 2-2 and a coater 1-1; the Raman probe 2-2 and ...

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Abstract

The invention discloses an anti-oxidation U-shaped surface enhancement Raman base coating device and a method for monitoring vegetable pesticide residues. The device comprises a working table for placing a sample to be coated, a coater for coating the sample to be coated, a working table rotation drive device, an electronic control unit, a Raman monitoring device and a base storage box. The working table drive device drives the U-shaped working table to move anticlockwise; firstly, the working table enters a coating operation area and is positioned through a positioning and sensing chip, and asurface enhancement base is coated in the sample; after coating is finished, the working table continuously rotates to enter a detection working area, and is synchronously detected in real time by the cooperation of a Raman probe, so that the sample is automatically coated and quickly, accurately and sensitively detected through a surface enhancement Raman technology. According to the anti-oxidation U-shaped surface enhancement Raman base coating device and the method for monitoring the vegetable pesticide residues provided by the invention, through preprogramming the electronic control unit,controlling coating time and coating speed, controlling rotating speed and rotating time of the working table rotation driving device, and coordinatively controlling through the electronic control unit, the uniformity in coating the sample to be coated can be ensured.

Description

technical field [0001] The invention relates to the technical field of agricultural product detection, in particular to an anti-oxidation U-shaped surface-enhanced Raman substrate coating device and method for monitoring vegetable pesticide residues. Background technique [0002] As a major country in the production and use of pesticides in the world, my country's pesticide residues have gradually become the most prominent food safety issue restricting my country's sustainable development. Raman spectroscopy has the advantage of being non-destructive and fast, but the Raman scattering effect is a very weak process, and its light intensity is generally only about 10 of the incident light intensity. -10 , resulting in a weak Raman signal. Surface-enhanced Raman scattering can significantly increase the intensity of the Raman signal, effectively reduce the detection limit of the substance to be detected, and is suitable for the detection of trace-level pesticide residues. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/65
Inventor 孙大文李江林蒲洪彬朱志伟王启军
Owner SOUTH CHINA UNIV OF TECH
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