Method for rapidly detecting butralin in tobacco through surface enhanced Raman scattering

A technology of surface-enhanced Raman and Zhongzhongbutingling is applied in the field of chemical analysis and detection to achieve the effect of improving the sensitivity of SERS detection and high-sensitivity detection.

Pending Publication Date: 2021-07-16
YUNNAN TOBACCO QUALITY SUPERVISION MONITORING STATION
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Problems solved by technology

[0004] For this reason, the present invention provides a kind of method that surface-enhanced Raman scattering detects butali

Method used

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  • Method for rapidly detecting butralin in tobacco through surface enhanced Raman scattering
  • Method for rapidly detecting butralin in tobacco through surface enhanced Raman scattering
  • Method for rapidly detecting butralin in tobacco through surface enhanced Raman scattering

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Embodiment 1

[0036] A method for surface-enhanced Raman scattering to quickly detect secbutaline in tobacco comprises the steps:

[0037] (1) Preparation of gold nano sol: Add 150mL 2.2mM sodium citrate solution into a three-necked flask with a condenser, stir at 100°C for 15 minutes, then add 1mL 25mM chloroauric acid solution, stir for 10min under reflux, the color of the solution Gradually change from yellow to blue-gray and then to light pink. Cool the solution to 90°C, add 1mL 60mM sodium citrate solution and 1mL 25mM chloroauric acid solution, stir under reflux for 30 minutes, the solution turns wine red, cool to 90°C, add 1mL of 60mM sodium citrate solution and 1mL of 25mM chloroauric acid solution were stirred under reflux for 30 minutes, the color deepened, and the solution was immediately cooled to room temperature in an ice-water bath to obtain a gold nanosol.

[0038] (2) Preparation of SERS substrate of nano-gold tape: put 3mL gold nano-sol into a beaker, slowly inject 1mL n-h...

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Abstract

The invention discloses a method for rapidly detecting butralin in tobacco through surface enhanced Raman scattering and relates to the technical field of chemical analysis and detection. The method comprises steps of a transparent and flexible nano-gold adhesive tape SERS substrate being prepared; adopting a butralin standard solution to determine a characteristic peak which can be used as a distinguishing basis for detecting butralin by using the surface enhanced Raman scattering spectrum, and determining a linear regression relationship between the butralin concentration and the peak area; pretreating a to-be-detected cigarette sample to obtain a to-be-detected sample solution; and performing Raman spectrum detection on the to-be-detected sample solution by using a portable Raman instrument, and calculating the butralin content in the tobacco according to the peak area of the characteristic peak. According to the method for rapidly detecting butralin in tobacco through surface enhanced Raman scattering, chloroform serves as a micro-extraction agent, glycerol serves as a butralin dispersing agent, butralin in tobacco can enter a hot spot area of an SERS substrate more easily, SERS signals can be increased, and the method has advantages of being high in sensitivity, rapid, easy and convenient to operate and the like.

Description

technical field [0001] The invention relates to the technical field of chemical analysis and detection, in particular to a surface-enhanced Raman scattering method for rapid detection of butadiene in tobacco. Background technique [0002] Butralin, whose chemical name is N-sec-butyl-4-tert-butyl-2,6-dinitroaniline, is a kind of sprout suppressant and farmland developed by American Amchem Company in the late 1960s. Herbicide has the advantages of high efficiency, broad spectrum, low toxicity and low dosage. Zhongbuling is a bud inhibitor and a selective herbicide. After the agent enters the plant, it mainly inhibits the cell division of the meristematic tissue, thereby inhibiting the growth of weed buds and young roots. It can also be used as a plant growth regulator to control tobacco Axillary buds grow; at the same time, it has a high-efficiency weed control effect. The current detection methods for butaline in tobacco include gas chromatography, gas chromatography-mass s...

Claims

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Application Information

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IPC IPC(8): G01N21/65B82Y15/00B82Y40/00
CPCB82Y15/00B82Y40/00G01N21/658
Inventor 陈丹谷毅王春琼杨亚玲杨德志张燕张轲
Owner YUNNAN TOBACCO QUALITY SUPERVISION MONITORING STATION
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