Method of taking Tenax as simulant to measure migration amount from paper and volatile and semi-volatile organic matter in paperboard by TD-GC/MS

A simulant, semi-volatile technology, applied in the field of analytical chemistry, can solve the problems of low sensitivity, unestablished method, complicated operation, etc., and achieve the effect of improving quality and safety, convenient operation and good repeatability

Inactive Publication Date: 2014-12-17
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no designated simulants for dry food in the relevant laws and regulations at home and abroad regarding the selection of simulants in the determination of migration of food contact materials, and there is only a general regulation on the selection of dry food simulants and migration experiments, and there is no Create the corresponding method
[0004] To determine the content of the components that migrate into the solid simulant, solvent extraction or thermal desorption is usually used to separate the migratory from the simulant and then measure. However, solvent extraction has the following disadvantages: (1) It cannot be fully injected, and the sensitivity is low (2) Solvent peaks often cover components with short retention times, forming interference; (3) Use organic toxic solvents; (4) Complex operation, easy to cause loss or denaturation
[0005] For the determination of the migration of food contact materials in contact with dry food at home and abroad, there is no report on the method of using Tenax as a simulant combined with thermal desorption-gas chromatography / mass spectrometry to directly measure the migration of volatile and semi-volatile organic compounds in the simulant

Method used

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  • Method of taking Tenax as simulant to measure migration amount from paper and volatile and semi-volatile organic matter in paperboard by TD-GC/MS
  • Method of taking Tenax as simulant to measure migration amount from paper and volatile and semi-volatile organic matter in paperboard by TD-GC/MS
  • Method of taking Tenax as simulant to measure migration amount from paper and volatile and semi-volatile organic matter in paperboard by TD-GC/MS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Tenax is used as a simulant TD-GC / MS method to directly measure the migration of volatile and semi-volatile organic compounds in paper and cardboard, including the following steps:

[0036] Step (1), sample preparation and assembly: cut and prepare 0.4 dm 2 Box-packed coated paper sample, as a simulation sample; spread the sample on the bottom of the weighing bottle, with the food contact surface facing upward, evenly spread 2.0 g Tenax on the sample, cover the weighing bottle cap, and the simulated At the same time, make a blank sample. The preparation method of the blank sample is to prepare another identical weighing bottle, evenly spread Tenax with the same quality as the simulated sample, and cover the weighing bottle cap;

[0037] Step (2), simulated test: place the simulated sample and the blank sample in an oven preheated to 40 °C at the same time, keep the temperature at a constant temperature for 24 hours, and cool to room temperature after completion;

[003...

Embodiment 2

[0044] Tenax is used as a simulant TD-GC / MS method to directly measure the migration of volatile and semi-volatile organic compounds in paper and cardboard, including the following steps:

[0045] Step (1), sample preparation and assembly: cut and prepare 1.0 dm 2 Sulfuric acid paper sample, as a simulated sample; spread the sample on the bottom of the weighing bottle, with the food contact surface facing up, evenly spread 5.0 g Tenax on the sample, cover the weighing bottle cap, and obtain the simulated sample; At the same time, make a blank sample. The preparation method of the blank sample is to prepare another identical weighing bottle, evenly spread Tenax with the same quality as the simulated sample, and cover the weighing bottle cap;

[0046] Step (2), simulated test: place the simulated sample and the blank sample in an oven preheated to 100 °C at the same time, keep the constant temperature for 1 h, and cool to room temperature after completion;

[0047] Step (3), de...

Embodiment 3

[0050] Tenax is used as a simulant TD-GC / MS method to directly measure the migration of volatile and semi-volatile organic compounds in paper and cardboard, including the following steps:

[0051] Step (1), sample preparation and assembly: cut and prepare 0.6 dm 2 White cardboard sample, as a mock sample; spread the sample on the bottom of the weighing bottle, with the food contact surface facing up, spread 3.0 g Tenax evenly on the sample, cover the weighing bottle cap, and get the mock sample Make a blank sample at the same time. The preparation method of the blank sample is to prepare another identical weighing bottle, evenly spread Tenax with the same quality as the simulated sample, and cover the weighing bottle bottle cap;

[0052] Step (2), simulation test: Simultaneously place the simulated sample and the blank sample in an oven preheated to 20 °C, keep the constant temperature for 240 h, and cool to room temperature after completion;

[0053] Step (3), determination:...

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Abstract

The invention relates to a method of taking Tenax as a simulant to directly measure a migration amount from paper and volatile and semi-volatile organic matter in a paperboard by TD-GC / MS, belongs to the technical field of analytic chemistry, and specifically relates to a volatile and semi-volatile compound of taking modified polyphenylene oxide (MPPO, Tenax) as the simulant to directly measure the migration amount by thermal desorption-gas chromatography / mass spectrometry(TD-GC / MS). The method comprises the following steps of: 1, preparing and packing simulated samples; 2, performing simulation test to the samples under testing conditions; 3, weighting the simulant and placing it into a sample hose, directly analyzing it by the TD-GC / MS method to gain the migration amount. Through the method, the special migration amount of the volatile and semi-volatile matter in the paper and the paperboard can be precisely measured so that the paper and the paperboard are improved in quality security. The method has the advantages of effectiveness, feasibility and convenient operation, the simulant can be directly analyzed and sampled without being in advance treated, thus it has the characteristics of high sensitivity, high recycling rate, excellent repeatability and promotion application value.

Description

technical field [0001] The invention relates to a method for measuring the migration of specific volatile and semi-volatile substances in paper and cardboard, which belongs to the technical field of analytical chemistry, and specifically relates to the use of improved polyphenylene ether (MPPO, Tenax) as a simulant, thermal desorption-gas phase Direct determination of migrating volatile and semivolatile compounds by chromatography / mass spectrometry (TD-GC / MS). Background technique [0002] Due to its environmental protection and other advantages, the use of paper packaging materials is increasing year by year. However, the main raw material of packaging paper or cardboard, as well as inks, solvents and auxiliary materials in the packaging and printing process, are polluted by impurities such as volatile and semi-volatile organic compounds. potential risks. Due to their volatility, these substances are easy to migrate into food, and are also released into the environment, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 司晓喜朱瑞芝张凤梅刘志华申钦鹏张涛刘春波王昆淼何沛杨光宇苏钟璧
Owner CHINA TOBACCO YUNNAN IND
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