Method for measuring residual quantity of chloropicrin in fermented grain and white spirit

A technology of chloropicrin and fermented grains, applied in the field of chemical analysis, can solve the problems of long extraction time, cumbersome operation, inaccurate results, etc., achieve good linear relationship, avoid decomposition, and reduce the effect of sample interference
CN104316616AActive Publication Date: 2015-01-28WULIANGYE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WULIANGYE
Publication Date
2015-01-28

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Abstract

The invention belongs to the technical field of chemical analysis and particularly relates to a method for measuring residual quantity of chloropicrin in fermented grains and white spirit, and aims to solve the technical problem about providing the method for measuring residual quantity of chloropicrin in the fermented grains and the white spirit. The method comprises the following steps: drawing a standard curve, introducing samples for detection, and analyzing a spectrogram to obtain a result. According to the method, the lower detection limit is 5 microgram / L, and one more accurate and effective method is provided for content determination of the chloropicrin in the fermented grains and the white spirit, so that a high foundation is laid for food safety of the white spirit.
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Description

technical field

[0001] The invention belongs to the technical field of chemical analysis, in particular to a method for measuring residual chloropicrin in fermented grains and liquor. Background technique

[0002] Chloropicrin is a warning fumigant that can kill insects, bacteria, and rodents. It can also be used for fumigation of food pests, wood preservation, building floors, ships, soil, and plant seeds. Colorless or yellowish oily liquid, lachrymatory, volatile, strong diffusivity, volatility increases with temperature rise. The chloropicrin vapor it produces is 5 times heavier than air. When the temperature is high, the medicinal effect is significant, and generally fumigation at 20°C is more appropriate.

[0003] At present, the spectrophotometric method (GB / T 5009.36) is used for the determination of chloropicrin residues in grains. This method is cumbersome to operate and takes a long time to extract. The colorimetric method is used in the determination process, s...

Claims

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