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Method for determining ethylene glycol monomethyl ether, glycol ether, ethylene glycol ether acetate, glycol and diglycol in food wrap paper

A technology of ethylene glycol ethyl ether acetate and food packaging paper, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of unknown detection, etc., and achieve easy promotion, satisfactory recovery rate and repeatability, and easy operation Effect

Active Publication Date: 2014-04-09
CHINA TOBACCO JIANGSU INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] As the public pays more and more attention to food safety issues, the quality and safety of food packaging materials has also become the focus of attention. Whether the existing detection methods are suitable for ethylene glycol monomethyl ether and ethylene glycol in food packaging materials The detection of the five components of monoethyl ether, ethylene glycol ethyl ether acetate, ethylene glycol, and diethylene glycol is unknown

Method used

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  • Method for determining ethylene glycol monomethyl ether, glycol ether, ethylene glycol ether acetate, glycol and diglycol in food wrap paper
  • Method for determining ethylene glycol monomethyl ether, glycol ether, ethylene glycol ether acetate, glycol and diglycol in food wrap paper
  • Method for determining ethylene glycol monomethyl ether, glycol ether, ethylene glycol ether acetate, glycol and diglycol in food wrap paper

Examples

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Effect test

Embodiment 1

[0055] A method for detecting ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol ethyl ether acetate, ethylene glycol, diethylene glycol in food packaging paper, specifically comprising the following steps:

[0056] 1) Take a sample of food wrapping paper, cut it into pieces no larger than 5mm×5mm, and mix them evenly;

[0057] 2) Accurately weigh about 0.5-1.0 g of the sample, place it in a 50-100 mL Erlenmeyer flask, add 10-20 mL of methanol extract with an internal standard concentration of 0.05 μg / mL, and conduct ultrasonic extraction at room temperature for 30 min;

[0058] 3) The extract is filtered by a filter membrane and detected by gas chromatography / mass spectrometer:

[0059] DB-624 capillary chromatographic column (60m×0.32mm×1.80μm) was used for separation, the inlet temperature was 250°C, the injection volume was 1μL, the split ratio was 1:10, the column flow rate was 1mL / min, and the heating program was: 120°C hold 5min, rise to...

Embodiment 2

[0075] According to the method of Example 1, weigh 0.5g of the sample into a 50mL Erlenmeyer flask, add 10mL of the extract and sonicate for 30min, and then filter the extract through a 0.22μm organic phase membrane for measurement. A certain brand of food wrapping paper was tested three times a day for three consecutive days. The experimental results obtained are shown in Table 2 ethylene glycol repeatability test results and table 3 diethylene glycol repeatability test results.

[0076] Table 2 Ethylene glycol repeatability test results (mg / kg)

[0077]

[0078] Table 3 Diethylene glycol repeatability test results (mg / kg)

[0079]

[0080] It can be seen from Table 2 and Table 3 that the RSD of intraday repeatability is less than 5%, and the RSD of daytime repeatability is less than 4%, indicating that this method can accurately determine ethylene glycol monomethyl ether and ethylene glycol in food packaging paper. Contents of monoethyl ether, ethylene glycol ether ac...

Embodiment 3

[0082] According to the method of Example 1, weigh 1.0g of the sample in a 100mL Erlenmeyer flask, add 20mL of the extract and sonicate for 30min, and then measure the extract after being filtered through a 0.45 μm organic phase filter membrane to obtain ethylene glycol monomethyl ether, ethylene glycol Alcohol monoethyl ether, ethylene glycol ethyl ether acetate, ethylene glycol, diethylene glycol content of five substances. Accurately add five kinds of to-be-tested food packaging paper into a certain brand of food wrapping paper with known content of five substances: The mixed standard samples of the components were used to measure the content values ​​of the five components to be measured under the three spiked levels of low, medium and high. Three samples were measured in parallel for each level, and the average value was used to calculate the recovery rate of standard addition. The test results are shown in Table 7 for the recovery experimental results of the five compon...

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Abstract

The invention discloses a method for determining ethylene glycol monomethyl ether, glycol ether, ethylene glycol ether acetate, glycol and diglycol in food wrap paper. The method disclosed by the invention comprises the following steps of: weighing and placing shredded food wrap paper into a container, adding a methanol extraction solution containing internal standard substances into the container, carrying out ultrasonic extraction, filtering extract liquor by virtue of a filter membrane, detecting filtrate by adopting a gas chromatography / mass spectrometer, monitoring in a selected ion mode and quantifying, and obtaining the contents of ethylene glycol monomethyl ether, glycol ether, ethylene glycol ether acetate, glycol and diglycol in the food wrap paper. The method disclosed by the invention has the advantages of simple pre-treatment, easiness in operation, good separating effect, accurate determination, short sample analysis time and high determination sensitivity and can realize accurate batch determination on five components in the food wrap paper at the same time.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a method for detecting ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol ether acetate, ethylene glycol and diethylene glycol in food packaging paper. Background technique [0002] Ethylene glycol monomethyl ether belongs to the low-toxicity class, and can cause anemia, macrocytosis, new granule leukocytes, and central nervous system disorders. Ethylene glycol monoethyl ether is not only irritating to the eyes and respiratory tract, but also can cause damage to the liver, kidney and lung, changes in the blood system, reproductive toxicity and teratogenicity. Ethylene glycol ether acetate is very toxic and may cause reproductive disorders. [0003] On July 1, 1998, the National Environmental Protection Agency, the Economic and Trade Commission, the Ministry of Foreign Trade and Economic Cooperation, and the Ministry of Public Security issue...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 朱怀远尤晓娟庄亚东刘献军张映沈晓晨熊晓敏盛金朱莹张华曹毅
Owner CHINA TOBACCO JIANGSU INDAL
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