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Method for measuring phthalate in toys for children

A technology of phthalates and children's toys, which is applied in the field of chemical detection, can solve problems such as human and animal health hazards, and achieve the effects of simple and fast operation, accurate quantification, and low detection limit

Inactive Publication Date: 2019-07-30
东莞市信准检测技术服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the acute toxicity of low-level phthalates is not high, it has a strong enrichment effect in the organism, and long-term exposure has certain hazards to the health of humans and animals.

Method used

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  • Method for measuring phthalate in toys for children
  • Method for measuring phthalate in toys for children

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for determining phthalates in children's toys, comprising the following steps:

[0025] 1) Prepare standard solution: Weigh 0.05g of 6 kinds of mixed standard phthalates into a 50ml brown volumetric flask, dilute to 50ml with n-hexane, shake well and let it stand, dilute it to the desired Concentration of the standard solution;

[0026] 2) Sample extraction: Take a representative sample, cut it into pieces or grind it, quantitatively weigh 0.500g and place it in an extraction bottle, add 15ml of organic solvent, cool to room temperature after microwave extraction, and then rotate to evaporate until the remaining 3-8ml of concentrated solution , then add the concentrated solution to the solid phase extraction column for purification, then use 12ml organic solvent to wash the solid phase extraction column several times, collect the eluate, use organic solvent to set the volume to 25ml, and finally use 0.45μm organic filter membrane filtration;

[0027] 3) Analy...

Embodiment 2

[0031] The difference with embodiment 1 is:

[0032] In step 2), the extraction temperature of microwave extraction is 55°C, and the extraction time of microwave extraction is 28min; before the concentrated solution is purified, it is activated with 3ml of organic solvent; after the concentrated solution is purified, it is rinsed with 3ml of organic solvent each time Wash the solid phase extraction column, repeat 3 times; the organic solvent is acetonitrile.

[0033] The rest are the same as in Embodiment 1, and will not be repeated here.

Embodiment 3

[0035] The difference with embodiment 1 is:

[0036] In step 2), the extraction temperature of the microwave extraction is 60°C, and the extraction time of the microwave extraction is 25min; before the concentrated solution is purified, it is activated with 3ml of organic solvent; after the concentrated solution is purified, it is rinsed with 5ml of organic solvent each time Wash the solid-phase extraction column and repeat 3 times; the organic solvent is diethyl ether.

[0037] The rest are the same as in Embodiment 1, and will not be repeated here.

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Abstract

The invention belongs to the technical field of chemical detection, and particularly relates to a method for measuring phthalate in toys for children. The method comprises the following steps: 1) configuring a standard solution; 2) sample extraction: taking a representative sample, cutting or grinding the same, quantitatively weighing 0.500g and placing the same in an extraction flask, adding 15mlorganic solvent, performing microwave extraction, cooling to the room temperature, then performing rotary evaporation until 3-8ml concentrated solution is left, then adding the concentrated solutioninto a solid phase extraction column to perform a purification treatment, then rinsing the solid phase extraction column for several times with 9-15 ml organic solvent, collecting the eluent, fixing the volume to 25ml by using the organic solvent, and finally performing filtering by using a 0.45 mu m organic filtering membrane; and 3) analyzing the sample by using a gas chromatograph-mass spectrometer. Compared with the prior art, the method provided by the invention has the advantages of simple and convenient operation, high detection speed and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of chemical detection, in particular to a method for measuring phthalates in children's toys. Background technique [0002] The main function of phthalates is to change hard plastic into elastic plastic. Because of its good performance and low cost, it involves a wide range of products, including hundreds of products such as toys and food packaging materials. Phthalates can enter the human body and organisms through breathing, eating and skin contact. Although the acute toxicity of low-level phthalates is not high, they have a strong enrichment effect in the organism, and long-term exposure will cause certain harm to the health of humans and animals. [0003] Plastic toys are items that children come into close contact with daily. The European Union clearly pointed out that phthalates in toys are one of the most common chemical hazards, which can harm children's liver and kidneys, and can also cause precoc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/025G01N2030/062
Inventor 郑灿城
Owner 东莞市信准检测技术服务有限公司
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