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Method for detecting acid brilliant scarlet GR in paper packaging material for foods

A technology for food packaging and acid red, applied in the field of physical and chemical inspection, to achieve the effect of less interference in the measurement process, accurate detection, and overcoming false positives

Active Publication Date: 2015-05-27
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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  • Method for detecting acid brilliant scarlet GR in paper packaging material for foods
  • Method for detecting acid brilliant scarlet GR in paper packaging material for foods
  • Method for detecting acid brilliant scarlet GR in paper packaging material for foods

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 detecting acid brilliant scarlet GR in a paper packaging material for foods. The method comprises the steps of carrying out ultrasonic extraction on a sample by using a methanol and acetic acid water solution; and directly entering an ultra-high performance liquid chromatography and quadrupole rod mass spectrum (UPLC-MS) combined instrument to detect after treating by using a filtering membrane. The method is simple in pretreatment and can be used for rapidly and accurately detecting the content of the acid brilliant scarlet GR in the paper packaging material for foods. According to the method, retention time of chromatography and simultaneous qualitation of mass spectrum are adopted, and therefore, compared with the traditional liquid chromatographic detecting method, the method has the advantages that the defect of easily-caused false positive is overcome, and the repeatability and reliability of quantitative analysis and accuracy of qualitative analysis are remarkably improved by using a UPLC-MS detecting system. No poisonous and harmful chemical products are used in the experimental process, so that few hazards for operating staffs are generated, and the method is easily operated. An optimized gradient elution program is adopted according to the feature that a matrix of the paper packaging material for foods is complex, so that interferences are eliminated, the recovery rate is high, and the detected result is accurate.

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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IPC IPC(8): G01N30/02
Inventor 徐雪芹李小兰贾海江田兆福陈志燕周芸黄善松蒋宏霖
Owner CHINA TOBACCO GUANGXI IND
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