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Highly flavored type liquor base cyanide analysis pre-treatment method

An analytical method, a cyanide technology, applied in material analysis by observing the effect on chemical indicators, analysis by chemical reaction of materials, color/spectral property measurement, etc., can solve the problem of high cost, troublesome operation, influence Analysis results and other problems, to achieve the effect of simple method, easy operation and accurate detection results

Inactive Publication Date: 2017-02-01
ANHUI RUISIWEIER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the filtration method is cumbersome to operate, and the filter membrane used is expensive and costly. More importantly, the filtration will remove part of the color and affect the analysis results, resulting in the inability to accurately analyze the cyanide in the Luzhou-flavor original wine.

Method used

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  • Highly flavored type liquor base cyanide analysis pre-treatment method
  • Highly flavored type liquor base cyanide analysis pre-treatment method

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Embodiment Construction

[0010] The present embodiment analyzes the cyanide in Luzhou-flavor original wine according to the following steps:

[0011] Take 1mL of the Luzhou-flavor original wine sample to be tested in a 10mL colorimetric tube, add sodium hydroxide solution (2g / L) to 5mL, and let it stand for 10min to convert the cyanide into sodium cyanide; then heat the sample on a boiling water bath 5min to remove aldehydes in the sample; then add 2 drops of phenolphthalein indicator, adjust to red with acetic acid solution (1+6), then adjust to near red with sodium hydroxide solution (2g / L), add 2mL of phosphate Buffer solution, mix well, stand for 10min, add 0.2mL chloramine T solution (10g / L), shake well and let stand for 3min, then add isonicotinic acid-pyrazolone 2mL, add water to the mark, mix well, stand for 30min, Such as figure 2 As shown, the obtained solution is clear and transparent, and can be directly used for color comparison on a spectrophotometer to obtain a result.

[0012] By co...

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Abstract

The invention discloses a highly flavored type liquor base cyanide analysis pre-treatment method. The method comprises adding a sodium hydroxide solution into a highly flavored type liquor base sample to be detected so that a cyanide is transformed into sodium cyanide, heating the sample in a boiling water bath for 5min to remove aldehyde substances in the sample, and carrying out analysis on the cyanide in the sample through a cyanide analysis method according to the national liquor and compound wine sanitary standard analysis method GB / T5009. 48-2003. The method realizes solution clarification and transparentizing, satisfies direct colorimetric requirements, produces an accurate detection result of highly flavored type liquor base cyanide and solves the problem that highly flavored type liquor base cyanide cannot be analyzed.

Description

technical field [0001] The invention relates to a pre-analysis method for cyanide in Luzhou-flavor original wine, belonging to the field of detection methods. Background technique [0002] Luzhou-flavor original wine contains aldehydes. When analyzing cyanide, add cyanide according to the "analysis method for cyanide" in the national standard GB / T5009.48-2003 "Analysis Method for Hygienic Standards for Distilled and Prepared Wine". After the color agent, there will be a milky white precipitate in the sample (such as figure 1 As shown), the solution is opaque, and the spectrophotometer method cannot be directly used for colorimetry, and it is necessary to remove the precipitate by filtration before detection. However, the filtration method is cumbersome to operate, and the filter membrane used is expensive and costly. More importantly, the filtration will remove a part of the color, which will affect the analysis results, resulting in the inability to accurately analyze the ...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N21/31
CPCG01N21/78G01N21/31
Inventor 张利
Owner ANHUI RUISIWEIER TECH
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