Method for measuring residual amount of anthraquinone in tea with gas chromatography-mass spectrum/mass spectrum method

A technique of gas chromatography and mass spectrometry, which is applied in the field of determining the residual amount of pollutants in tea, and achieves the effect of simple method

Active Publication Date: 2016-03-23
THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on anthraquinone in tea leaves in the literature

Method used

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  • Method for measuring residual amount of anthraquinone in tea with gas chromatography-mass spectrum/mass spectrum method
  • Method for measuring residual amount of anthraquinone in tea with gas chromatography-mass spectrum/mass spectrum method
  • Method for measuring residual amount of anthraquinone in tea with gas chromatography-mass spectrum/mass spectrum method

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Embodiment Construction

[0055] 1. Reagents and materials

[0056] 1.1 n-Hexane: chromatographically pure.

[0057] 1.2 Acetone: chromatographically pure.

[0058] 1.3 Diethyl ether: chromatographically pure.

[0059] 1.4 Sodium chloride: analytically pure, ignited at 650°C for 4 hours, cooled to room temperature in a desiccator, and stored in a sealed bottle for later use.

[0060] 1.5 Anhydrous sodium sulfate: analytically pure, ignited at 650°C for 4 hours, cooled to room temperature in a desiccator, and stored in a sealed bottle for later use.

[0061] 1.6 Anthraquinone, anthraquinone-D8 standard substance (Anthraquinone,, CAS: 84-65-1, C14H8O2; Anthraquinone-D8,, CAS: 10439-39-1): purity greater than or equal to 99%.

[0062] 1.7 Standard stock solution: Accurately weigh an appropriate amount of standard substance (1.6), prepare a 0.4mg / mL standard stock solution with acetone, and store it in a refrigerator at 0°C to 4°C in the dark, with a validity period of 6 months.

[0063] 1.8 Anthraquin...

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Abstract

The invention relates to a method for measuring the residual amount of pollutants in tea, in particular to a method for measuring the residual amount of anthraquinone in tea with a gas chromatography-mass spectrum/mass spectrum method. The method for measuring the residual amount of anthraquinone in tea with the gas chromatography-mass spectrum/mass spectrum method includes the following steps of 1, sample processing; 2, measuring, wherein a standard working solution and a sample solution are injected under the set gas chromatography-mass spectrum/mass spectrum condition. The method for measuring the residual amount of anthraquinone in tea with the gas chromatography-mass spectrum/mass spectrum method is simple, convenient, rapid, accurate and reliable, and the limit of detection, the recovery rate and the precision degree all meet requirements.

Description

technical field [0001] The invention relates to a method for determining the residual amount of pollutants in tea, in particular to a method for determining the residual amount of anthraquinone in tea by gas chromatography-mass spectrometry / mass spectrometry. Background technique [0002] Anthraquinone (AnthraquinoneAQ, CASNo84-65-1, C 14 h 8 o 2 ) is a widely used chemical product. As the precursor of anthraquinone dyes, 9,10-anthraquinone is the precursor of synthetic disperse dyes, acid dyes, vat dyes and reactive dyes; as an additive in the papermaking process, 9,10-anthraquinone can accelerate the speed of delignification, Improve pulp yield; in agriculture, anthraquinone has been used as a bird repellant in paddy fields and oil crop planting areas. At present, 9,10-anthraquinone has not been registered in the EU or other countries for agricultural production. In my country, anthraquinone has not been registered for use on tea trees and other crops in my country. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
CPCG01N30/88
Inventor 谢文陈丽黄超群申屠炎楼成杰侯建波谢韵第陈安邓晓军于卓然
Owner THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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