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Method suitable for detecting content of phthalate in non-phthalate plasticizer

A technology of phthalates and detection methods, which is applied in the field of chemical analysis, can solve the problems of not mentioning phthalates, etc., and achieve the effects of improving accuracy and detection efficiency, fewer steps, and good crushing effect

Inactive Publication Date: 2019-11-15
深圳恒方大高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the national standards and chemical industry standards corresponding to non-phthalic plasticizers do not mention the detection method of phthalates, but this method can use GC-MS to accurately and effectively detect phthalates in non-phthalic plasticizers. Formate content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A detection method applicable to the content of phthalates in non-phthalic plasticizers, said method comprising the following steps:

[0028] (1) Sample pretreatment: put the children's product to be tested in a pulverizer, clean and dry the PVC material to be tested with water and gasoline before pulverizing, inject liquid nitrogen for cooling treatment, and cover the pulverizer after the liquid nitrogen is completely volatilized The lid of the machine is pressed tightly by hand, and the power is turned on for crushing;

[0029] (2) Sample extraction: Weigh the sample and dissolve it in a mixed organic solvent. The mixed organic solvent is a mixture of acetone and n-hexane with a volume ratio of 1:3; ultrasonic extraction is used for extraction, and the extraction time is 6 hours; the extract is separated by filtration After evaporating and concentrating, filter with an organic phase filter membrane, and use GC-MS to detect after constant volume with n-hexane;

[0030...

Embodiment 2

[0040] A detection method applicable to the content of phthalates in non-phthalic plasticizers, said method comprising the following steps:

[0041] (1) Sample pretreatment: put the children's product to be tested in a pulverizer, clean and dry the PVC material to be tested with water and gasoline before pulverizing, inject liquid nitrogen for cooling treatment, and cover the pulverizer after the liquid nitrogen is completely volatilized The lid of the machine is pressed tightly by hand, and the power is turned on for crushing;

[0042] (2) Sample extraction: Weigh the sample and dissolve it in a mixed organic solvent. The mixed organic solvent is a mixture of acetone and n-hexane with a volume ratio of 1:18. Ultrasonic extraction is used for extraction. The extraction time is 10 hours, and the extract is filtered and separated. After evaporating and concentrating, filter with an organic phase filter membrane, and use GC-MS to detect after constant volume with n-hexane;

[00...

Embodiment 3

[0053] A detection method applicable to the content of phthalates in non-phthalic plasticizers, said method comprising the following steps:

[0054] (1) Sample pretreatment: put the children's product to be tested in a pulverizer, clean and dry the PVC material to be tested with water and gasoline before pulverizing, inject liquid nitrogen for cooling treatment, and cover the pulverizer after the liquid nitrogen is completely volatilized The lid of the machine is pressed tightly by hand, and the power is turned on for crushing;

[0055] (2) Sample extraction: Weigh the sample and dissolve it in a mixed organic solvent. The mixed organic solvent is a mixture of acetone and n-hexane with a volume ratio of 1:20. Ultrasonic extraction is used for extraction, and the extraction time is 12 hours; the extract is separated by filtration After evaporating and concentrating, filter with an organic phase filter membrane, and use GC-MS to detect after constant volume with n-hexane;

[00...

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Abstract

The invention relates to the technical field of chemical analysis, in particular to a method suitable for detecting content of phthalate in a non-phthalate plasticizer. The method comprises steps as follows: (1) sample pretreatment; (2) sample extraction: a sample is weighed and dissolved in a mixed organic solvent, an extracting solution is subjected to evaporation and concentration after being filtered and separated and then filtered by an organic phase filtering film, and a GC-MS (gas chromatography-mass spectrometer) is adopted for detection after the solution is kept at the constant volume with n-hexane; (3) drawing of a work curve; (4) GC-MSdetection. The method suitable for detecting the content of phthalate in the non-phthalate plasticizer comprises a fewer steps, and the content of phthalate in PVC particles is precisely and effectively detected with the GC-MS by sample treatment and control of GC-MS detection conditions. Liquid hydrogen is adopted during smashing for coolingtreatment, the smashing effect is good, and the following extraction efficiency is improved. The organic phase filtering film is adopted for purification before GC-MS detection, and follow-up detection accuracy and detection efficiency are conveniently improved.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a method for detecting the content of phthalates in non-phthalic plasticizers. Background technique [0002] Plasticizers are the most common type of plastic additives in daily life, among which phthalates are the most commonly used compounds. Plasticizer consumption accounts for more than half of all plastic additives demand. As large as car interiors, wires and cables, and construction materials, as small as children's toys, infusion bags, and rubber gloves. [0003] Phthalic acid plasticizer is a kind of environmental hormone, its function is similar to that of artificial hormone. Excessive intake of human body will cause immunity decline, endanger male reproductive ability and promote female sexual precocity. Long-term large intake can lead to liver cancer. Young children are far more potentially harmful than adults. [0004] At present, the national standards an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/14
CPCG01N30/02G01N30/06G01N30/14
Inventor 张智杰汤明佳
Owner 深圳恒方大高分子材料科技有限公司