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Method for simultaneously determining various wooden plug pollutants in grape wine

A technology for wine and pollutants, which is applied in the field of wine detection, can solve the problem that there is no simultaneous determination of wine cork pollutants, etc., and achieves the effects of good standard recovery, high sensitivity and improved accuracy.

Active Publication Date: 2020-12-18
秦皇岛海关技术中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the current domestic standards, there are only light industry standards on the migration of 2,4,6-trichloroanisole in cork stoppers and the determination of 2,4,6-trichloroanisole residues in exported wine. Entry inspection and quarantine industry standards, there is no national standard detection method for the simultaneous determination of multiple cork pollutants in wine

Method used

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  • Method for simultaneously determining various wooden plug pollutants in grape wine
  • Method for simultaneously determining various wooden plug pollutants in grape wine
  • Method for simultaneously determining various wooden plug pollutants in grape wine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 Detection of nine kinds of cork contaminants in different types of wine

[0047] (1) Derivatization of nine pollutants and six isotopic internal standard solutions

[0048] Among them, the detected pollutants include: 2,4,6-trichloroanisole, 2,3,4,5-tetrachloroanisole, 2,3,4,6-tetrachloroanisole, pentachloroanisole Anisole, 2,4,6-Trichlorophenol, 2,3,4,6-Tetrachlorophenol, Pentachlorophenol, 2,4,6-Tribromoanisole and 2,4,6-Tribromoanisole phenol;

[0049] Internal standards include: 2,4,6-Trichloroanisole-D 5 , Pentachloroanisole-D 3 , 2,4,6-Trichlorophenol- 13 C 6 , 2,4,5,6-Tetrachlorophenol- 13 C 6 , Pentachlorophenol- 13 C 6 , Tribromoanisole-D 5 .

[0050] S1. Prepare 1000 mg / L standard stock solution of target substance and isotopic internal standard with methanol, dilute the above stock solution with ethanol to 10 mg / L standard working solution of target substance and isotopic internal standard, and store in a refrigerator at 4°C.

[0051] S...

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Abstract

The invention discloses a method for simultaneously determining multiple wooden plug pollutants in grape wine, and belongs to the technical field of grape wine detection. The method mainly comprises the following steps: derivatization treatment of a target object and an internal standard, determination of characteristic ions of the target object and the internal standard, establishment of a gas chromatography-tandem mass spectrometry selective reaction monitoring method, determination of a standard curve and detection of the cork pollutants in the grape wine. The method can be used for simultaneously determining nine wooden plug pollutants such as 2, 4, 6-trichloroanisole, 2, 3, 4, 5-tetrachloroanisole, 2, 3, 4, 6-tetrachloroanisole, pentachloroanisole, 2, 4, 6-trichlorophenol, 2, 3, 4, 6-tetrachlorophenol, pentachlorophenol, 2, 4, 6-tribromoanisole and 2, 4, 6-tribromophenol. The detection method is good in linear correlation and standard recovery rate, the detection limit is 0.1 ng / L-0. 5 ng / L, and a technical guarantee can be provided for detection of the cork pollutants in the wine.

Description

technical field [0001] The invention belongs to the technical field of wine detection, in particular to a method for simultaneously measuring multiple cork contaminants in wine. Background technique [0002] Cork contaminants are one of the causes of wine quality defects, manifested as rotten cardboard and mildew odor. Cork contaminants will gradually migrate into wine during wine storage, affecting wine quality, and thus will bring huge consequences to the wine industry. Economic losses. Cork pollutants mainly include ethers and phenolic compounds, and their production mechanisms or sources are complex. Chlorophenolic compounds are mainly added as flame retardants, fungicides or preservatives in the pretreatment of cork, and can also be obtained from various sources. Phenol and chlorine (such as those contained in some cleaning products and disinfectants) react to form under specific conditions; while chlorophenols are methylated under the action of microorganisms such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/30G01N30/32G01N30/72
CPCG01N30/02G01N30/06G01N30/30G01N30/32G01N30/72G01N2030/062G01N2030/324
Inventor 张昂崔宗岩李昕颖王圣仪秦玲张紫娟张进杰
Owner 秦皇岛海关技术中心
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