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A method for the determination of acid scarlet gr in paper food packaging materials

A technology of food packaging and acid scarlet, applied in the field of physical and chemical testing, to achieve the effect of easy operation, elimination of interference, and improvement of repeatability

Active Publication Date: 2018-07-03
CHINA TOBACCO GUANGXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no detection literature and analysis method of Acid Scarlet GR in paper food materials, so it is imperative to strengthen the research on detection methods and standards, and it is necessary to propose a simple and quick method for its safety monitoring

Method used

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  • A method for the determination of acid scarlet gr in paper food packaging materials
  • A method for the determination of acid scarlet gr in paper food packaging materials
  • A method for the determination of acid scarlet gr in paper food packaging materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Instrument and reagent of the present invention, material:

[0026] U.S. Agilent1290 / 6460 ultra-high performance liquid chromatography-quadrupole mass spectrometer; chromatographic column: AgilentC18 (4.6×150mm, 5μm), 0.22μm microporous filter membrane, ultrasonic cleaner;

[0027] Ultrapure water (18MΩ), methanol (chromatographically pure, Bailingwei Chemical Reagent Company), acetic acid and ammonium acetate were all of superior grade.

[0028] Preparation of standard working curve: use methanol to make Acid Scarlet GR standard stock solution into 0.1, 0.5, 1, 5, 10, 20μg / L series concentrations, and compare the peak area of ​​the analyte with the peak area of ​​the internal standard (Y) The concentration (X) of the analyte was linearly regressed to make a standard curve.

[0029] Sample pretreatment: Weigh 1.0g sample (accurate to 0.0001g), place it in a 50ml ground-mouth Erlenmeyer flask, accurately add 30mL extract solution (1:3:6), ultrasonically extract for 15-3...

Embodiment 2

[0038] Using methanol solution as a solvent, prepare a standard working curve, inject 10 consecutive samples with the lowest concentration standard solution, calculate the standard deviation, and use 3 times and 10 times the standard deviation to represent the detection limit and quantification limit respectively. The results are shown in Table 3:

[0039] Table 3 method standard curve equation and quantitative detection limit

[0040]

Embodiment 3

[0042] The intra-day and inter-day parallelism measurements were carried out on the same sample 5 times. The intra-day repeatability results are shown in Table 4, and the intra-day repeatability results are shown in Table 5:

[0043] The intraday repeatability results (mg / kg) of the method in Table 4

[0044]

[0045] The day-to-day repeatability results (mg / kg) of the method in Table 5

[0046]

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Abstract

The invention relates to a method for measuring acid scarlet GR in paper food packaging materials. The sample is ultrasonically extracted with methanol acetic acid aqueous solution, and the sample is filtered and directly entered into ultra-high performance liquid chromatography-quadrupole mass spectrometry (UPLC-MS) for measurement. . The method has simple pretreatment and can quickly and accurately detect the content of acid scarlet GR in paper food packaging materials. The present invention adopts chromatographic retention time and mass spectrometry to be qualitative at the same time. Compared with traditional liquid chromatography detection, it overcomes the shortcoming that it is easy to produce false positives, and the UPLC-MS detection system significantly improves the repeatability, reliability and qualitative analysis of quantitative analysis. accuracy. No toxic and harmful chemicals are used in the experimental process, which is less harmful to operators and easy to operate. In view of the complex matrix characteristics of paper food packaging materials, an optimized gradient elution procedure is adopted to eliminate interference, with high recovery rate and accurate determination results.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical testing, and in particular relates to a method for measuring the content of acid scarlet GR in paper food packaging materials. Background technique [0002] In recent years, the quality of paper packaging materials in direct contact with food has affected food safety. The exquisite and bright patterns on packaging materials often contain banned dyes. Due to the low price and stable coloring of banned pigments, many businessmen will It is used in food packaging materials, Acid Red GR, also known as Acid Red 73, was identified by the German Ministry of Health as early as 1994 to contain carcinogenic components of p-aminoazobenzene (p-AaB), and it has been confirmed that it is carcinogenic to animals In January 1995, Germany and the European Community passed a revised bill on harmful or carcinogenic substances in textiles, and Acid Scarlet GR, as an A2 dye in MAKⅢ, was banned in textile...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 李小兰陈锋徐雪芹贾海江黄善松陈志燕周芸田兆福蒋宏霖
Owner CHINA TOBACCO GUANGXI IND
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