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Method for measuring migration volume of phthalic ester and di(2-ethylhexyl) adipate in fatty foodstuff contact material

A technology of diethylhexyl adipate and phthalate, applied in the field of analytical chemistry, can solve the problems of difficult separation and purification of the analyte and oil, and the inability to lower the detection limit of the test.

Inactive Publication Date: 2009-07-29
通标标准技术服务(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report in the literature that can simultaneously test solutions of different substrates, and the test using phthalates and diethylhexyl adipate in oils is due to the close polarity of the analytes and oils. Difficult to separate and purify, so the detection limit of the test cannot be lowered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment one: the mensuration of butyl phthalate and diethylhexyl phthalate in olive oil

[0022] 1. Adsorbent and column preparation

[0023] (1) Silica gel: bake at 300°C for 5 hours, place in a desiccator to cool, add 2 mL of deionized water per 100 g of silica gel to deactivate, and store in a desiccator for later use.

[0024] (2) Chromatography column packing method

[0025] Fill the glass chromatography column with 1cm of anhydrous sodium sulfate first, take 20g of silica gel in a 100mL beaker, add petroleum ether ether solution, use the wet column packing method to fill the chromatography column, the height is 15cm, and finally fill the upper layer with about 1cm anhydrous sodium sulfate.

[0026] 2. Preparation of sample solution

[0027] (1) Weigh 2g of olive oil in a 150mL beaker, add 20mL of petroleum ether ether, and shake well;

[0028] (2) Add the sample liquid to the chromatographic column, draw 5mL of petroleum ether to clean the beaker;

[0029]...

Embodiment 2

[0056] Embodiment two: the mensuration of isononyl phthalate and isocenyl phthalate in peanut oil

[0057] 1. Adsorbent and column preparation

[0058] (1) Silica gel: bake at 300°C for 5 hours, place in a desiccator to cool, add 2 mL of deionized water per 100 g of silica gel to deactivate, and store in a desiccator for later use.

[0059] (2) Chromatography column packing method

[0060] Fill the glass chromatography column with 1cm of anhydrous sodium sulfate first, take 20g of silica gel in a 100mL beaker, add petroleum ether ether solution, use the wet column packing method to fill the chromatography column, the height is 15cm, and finally fill the upper layer with about 1cm anhydrous sodium sulfate.

[0061] 2. Preparation of sample solution

[0062] (1) Weigh 2g of peanut oil into a 150mL beaker, add 20mL of petroleum ether ether, and shake well;

[0063] (2) Add the sample liquid to the chromatographic column, draw 5mL of petroleum ether to clean the beaker;

[00...

Embodiment 3

[0091] Embodiment three: the mensuration of allyl phthalate in rapeseed oil

[0092] 1. Adsorbent and column preparation

[0093] (1) Silica gel: bake at 300°C for 5 hours, place in a desiccator to cool, add 2 mL of deionized water per 100 g of silica gel to deactivate, and store in a desiccator for later use.

[0094] (2) Chromatography column packing method;

[0095] Fill the glass chromatography column with 1cm of anhydrous sodium sulfate first, take 20g of silica gel in a 100mL beaker, add petroleum ether ether solution, use the wet column packing method to fill the chromatography column, the height is 15cm, and finally fill the upper layer with about 1cm anhydrous sodium sulfate.

[0096] 2. Preparation of sample solution:

[0097] (1) Weigh 1g of rapeseed oil in a 150mL beaker, add 10mL of petroleum ether ether, and shake well;

[0098] (2) Add the sample liquid to the chromatographic column, draw 5mL of petroleum ether to clean the beaker;

[0099] (3) Rinse the ch...

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Abstract

The invention belongs to the field of analytical chemistry and relates to the measurement for the transferring amount of phthalate and ethylhexyl adipate in fatty food contact materials, in particular to the use of an adsorbent chromatography colume for purifying and separating the phthalate and ethylhexyl adipate in fatty food simulant liquid, and the use of a combined gas chromatography mass spectrometry for measuring the content thereof. The pre-treatment method which is provided by the invention for the purification and separation of the adsorbent chromatography colume has the advantages of rapidity, strong selection property, small pollution, and low detection limit. The invention can achieve the measurement for the transferring amount of phthalate and ethylhexyl adipate in fatty food contact materials.

Description

technical field [0001] The invention belongs to the field of analytical chemistry and relates to the determination of the migration of phthalate and diethylhexyl adipate in food contact materials by gas chromatography mass spectrometry. It specifically relates to the purification and separation of phthalate and diethylhexyl adipate in the simulated liquid of fat food by an adsorbent chromatographic column, and the determination of the content by gas chromatography mass spectrometry. Background technique [0002] Phthalates and diethylhexyl adipate are widely used plasticizers, and are still widely used in plastic products. Toxicological experiments have proved that these compounds have estrogenic effects, so these compounds need to be monitored usage of. [0003] Since plastics are widely used in food-contact containers and packaging, the quality control of food-contact materials adopts the method of immersion in food simulants that can represent the properties of food to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N27/64
Inventor 陈志强刘平年李军祁玉清王会芳李耀青
Owner 通标标准技术服务(天津)有限公司
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