Method for quickly detecting cyanide in white spirits by utilizing Raman spectrum
A technology of Raman spectroscopy and cyanide, applied in Raman scattering, measuring devices, material analysis through optical means, etc., can solve the problems of poor specificity, high cost, unsuitable for rapid detection, etc., and achieve low operating professional requirements, The effect of rapid and sensitive detection and rapid and efficient enrichment
Active Publication Date: 2019-12-03
南京简智仪器设备有限公司
View PDF5 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Among them, visual colorimetry and spectrophotometry mostly use the quantitative reaction between cyanide and chromogenic substances, and the sensitivity is at the level of 0.01-1 mg / L, but the specificity is poor; Need to carry out derivatization reaction or select special type of chromatographic column, the processing process is complex, time-consuming, high cost, professional technical operation is required, and it is not suitable for on-site rapid detection
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] The following is attached figure 1 , attached figure 2 , the present invention will be described in further detail.
[0023] (1) Synthesis of Au / Fe-composite microspheres: 0.2g Fe 3 o 4 Add magnetic microspheres to 50mL containing 0.2g HAuCl 4 , 3g NH 4 Cl, 2g sodium citrate mixed solution, ultrasonic reaction for 5min and then centrifuged.
[0024] (2) Adjustment of the Raman detection enhancer: Au / Fe-composite microspheres were dispersed in deionized water, and the Zeta potential of the Au / Fe-composite microsphere sol was adjusted to -50 mV to obtain a Raman enhancer.
[0025] (3) Prepare cyanide standard solution: Accurately weigh 0.1 g of cyanide standard product, dissolve it in water, dilute to 100 mL, store in the dark at 4 °C, and dilute the standard solution to 0.1 mg / L, 0.5 mg / L, 0.5 mg / L, A series of standard solutions of 1mg / L, 2 mg / L, 5mg / L and 10mg / L are available for use.
[0026] (4) Preparation of the liquor sample solution to be tested: take 5 m...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| size | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a method for quickly detecting cyanide in white spirits by utilizing Raman spectrum, and is especially suitable for the quick detection of the food. The method specifically comprises the following steps: serving a gold-nanometer modified magnetic microsphere sol as a Raman detection enhancer, mixing one volume of to-be-detected solution with five volumes of Raman detectionenhancer, performing quick Raman determination, and realizing the qualitative and quantitative detection of the cyanide according to the characteristic peak location and the strength. The invention provides a new quick detection method for the cyanide in the white spirits, the method is simple and quick in operation process, accurate in result, and high in sensitivity, and the detection limit is0.01mg / L; furthermore, the field real-time analysis and the outdoor real-time analysis can be realized by cooperating with a handheld Raman analyzer.
Description
technical field [0001] The invention belongs to the field of analysis and detection of substances, in particular to the technical field of rapid detection of food safety. Background technique [0002] Cyanide is a highly toxic substance. After entering the human body, cyanide ions are precipitated and combined with the ferric iron of the oxidative cytochrome oxidase in the mitochondria of cells, preventing the reduction of ferric iron in the oxidase, hindering the normal respiration of cells and causing tissue hypoxia. Cause the body to fall into a state of internal suffocation. In addition, the molecules of certain nitrile compounds themselves have a direct inhibitory effect on the central nervous system. The lethal dose of acute poisoning by oral route is 0.48~3.37 mg / kg body weight (cyanide), and acute poisoning symptoms appear within a few minutes. [0003] Cyanide exists widely in nature. In plants, cyanide is usually combined with sugar molecules and exists in the fo...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
CPCG01N21/658
Inventor 夏婧竹刘峰盛金殷磊
Owner 南京简智仪器设备有限公司