Method for quantitatively analyzing components in white spirit

A quantitative analysis, liquor technology, applied in the field of liquor analysis, can solve the problems of inability to carry out subsequent analysis, inability to quickly detect on-site, and expensive testing.

Inactive Publication Date: 2014-03-19
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of chromatography are: 1. Complicated pretreatment of the sample such as extraction is required before testing; 2. A large amount of water in liquor will damage the test equipment; 3. The chemical composition in liquor is relatively complicated in order to accurately measure various The content of the substance needs to obtain the working curve of various substances, and the workload is large; 4. If the normalized area size ratio of the substance is used as a measurement method for the content of the substance, there will be a large error, and subsequent analysis cannot be performed; 5. Long test time: Usually it takes about 40 minutes to test a sample, which is not conducive to rapid on-site detection; 6. The detection of volatile substances requires a special chromatographic column
The disadvantages of spectroscopic identification of liquor are: the establishment of quantitative analys...

Method used

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  • Method for quantitatively analyzing components in white spirit
  • Method for quantitatively analyzing components in white spirit
  • Method for quantitatively analyzing components in white spirit

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0091] The samples were 12-year-old Baiyunbian wine, 50 real wines of different batches, and 900 fake wines of different types. Table 1 Collection information of counterfeit wine samples.

[0092] Table 1: Collection Information of Counterfeit Wine Samples

[0093]

[0094] Detection steps:

[0095] 1. The selected instruments are the Nexus670 infrared spectrometer of Nicholas Instrument Company of the United States, the attenuated total reflection accessory; the 7890-5975c gas spectrometer of the American Agilent Company;

[0096] 2. Infrared spectrometer parameter setting: wave number: 4000-650cm -1 ; Resolution: 8cm -1 ; The number of repeated scans was 16 times; the gas chromatography-mass spectrometry parameters and conditions were set according to the aforementioned conditions.

[0097] 3. Take a small amount of sample with a disposable straw, spread it evenly on the zinc germanide crystal, and place the experimental plate at the designated position of the infrare...

example 2

[0108] The samples were aged in Baiyunbian for 9 years, 50 real wines of different batches, and 900 fake wines of different types. Table 3 is the collection information of the counterfeit wine samples in this example, and the samples in Table 3 are collected in different places from those in Example 1.

[0109] Table 3: Collection information of counterfeit wine samples in this example

[0110]

[0111] Detection steps:

[0112] 1. The selected instruments are the Nexus670 infrared spectrometer of Nicholas Instrument Company of the United States, the attenuated total reflection accessory; the 7890-5975c gas spectrometer of the American Agilent Company;

[0113] 2. Infrared spectrometer parameter setting: wave number: 4000-650cm -1 ; Resolution: 8cm -1 ; The number of repeated scans was 16 times; the gas chromatography-mass spectrometry parameters and conditions were set according to the aforementioned conditions.

[0114] 3. Take a small amount of sample with a disposab...

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Abstract

The invention belongs to a white spirit analysis method and discloses a method for quantitatively analyzing components in white spirit by utilizing an infrared spectrum and combining with data processing, aiming at solving the defects in a conventional white spirit analysis method that a sample need to be pretreated before test, the measurement time is long, rapid field detection cannot be performed and the test price is high. The method comprises the following steps: selecting an instrument Nicolet Nexus 670 and an attenuated total reflection accessory; selecting Agilent 7890-5975c gas chromatograph-mass spectrometer; setting parameters of an infrared spectrometer; detecting the infrared spectrum of the sample; preparing standard working curve solutions of different concentrations to obtain multiple groups of working curves; measuring the chromatograph of the sample; solving the content of each substance by utilizing the working curves, and recording the substance content information serving as the characteristic as C=[c1, c2,...cn]; and comparing the detection result to identify the white spirit. The method has the advantages that the identification accuracy rate is high; the identification speed is high; the fake liquor dens can be traced, and manpower and material resources of supervision departments are saved.

Description

technical field [0001] The invention belongs to a liquor analysis method, in particular to a liquor component quantitative analysis method using infrared spectrum combined with data processing. Background technique [0002] Baijiu is a unique alcoholic beverage among distilled liquors in the world. It is a beverage fermented, fermented and distilled from wheat millet, sorghum, corn, sweet potato, rice bran and other grains or other fruits. It is brewed with high-quality clean water. Liquor liquor is colorless and transparent, rich in aroma, mellow and soft, with various flavors. Liquor, except containing a very small amount of sodium, copper, zinc, almost does not contain vitamins, calcium, phosphorus, iron and other materials, what contained is only water and ethanol. Liquor has the function of invigorating blood circulation and dredging the veins, helping medicine, increasing appetite, eliminating fatigue, making people light and refreshing from the cold. Drinking a smal...

Claims

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Application Information

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IPC IPC(8): G01N21/25G01N30/02
Inventor 牟怿尤新革徐端全周龙曾武刘延申
Owner HUAZHONG UNIV OF SCI & TECH
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