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Detection method for four benzotriazole ultraviolet absorbers in plastics and related products

A technology of benzotriazoles and ultraviolet absorbers is applied in the directions of measurement devices, material separation, and analysis of materials, which can solve problems such as hazards and aggregation, and achieve the effects of good instrument stability and simple processing process.

Inactive Publication Date: 2016-10-19
PONY TESTING INT GRP SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Benzotriazole UV absorbers are extremely stable and will accumulate in the human body to cause harm

Method used

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  • Detection method for four benzotriazole ultraviolet absorbers in plastics and related products
  • Detection method for four benzotriazole ultraviolet absorbers in plastics and related products
  • Detection method for four benzotriazole ultraviolet absorbers in plastics and related products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1 Determination of UV327, UV328, UV320 and UV350 residues in a certain automobile heat insulation film sample

[0047] 1. Analysis steps

[0048] Weigh 1.0g (accurate to 0.0001g) of a sample of an automobile insulation film into a 25ml spinner bottle, add 10mL of toluene, vortex and mix, and ultrasonically extract at 50°C for 30min. Filtered through a 0.45 μm PTFE membrane, and analyzed by gas chromatography mass spectrometry.

[0049] 2. Gas chromatography mass spectrometry conditions

[0050] Chromatographic column: DB-5MS (or equivalent column), 15m×0.25mm (inner diameter), 0.1μm (film thickness); injection port: 250°C; injection method: split flow, split ratio: 2:1; injection volume : 1 μL; column temperature: 100°C (hold for 1min), increase temperature at 60°C / min to 180°C (hold for 1min), increase temperature at 3 / min to 210°C (hold for 1min), increase temperature at 50°C / min to 310°C ( Hold for 3min); carrier gas: helium; flow rate: 1.0mL / min (constant...

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Abstract

The invention belongs to the field of electrical and electronic products and chemical industry products, and relates to a detection method for four benzotriazole ultraviolet absorbers in plastics and related products, particularly to a detection method for the UV327 residue, the UV328 residue, the UV350 residue, and the UV320 residue by using a gas chromatography mass spectrometry method. According to the present invention, after a sample is subjected to ultrasonic extraction with toluene, filtration is performed with a film, analysis is performed with GC-MS, and quantitation is performed with an external standard method; and the method of the present invention has advantages of accurate qualitation, rapid quantitation, and the like.

Description

[0001] The invention belongs to the field of detection of electronic, electrical and chemical products, and relates to a detection method for determining the residual amount of four benzotriazole ultraviolet absorbers in plastics and related products by gas chromatography mass spectrometry. Background technique [0002] Benzotriazoles are better UV absorbers, with stable performance, low toxicity, strong ability to absorb ultraviolet rays, can inhibit or weaken photodegradation, improve the light resistance of synthetic materials and compatibility with polymer materials nice features. Widely used in various synthetic material products such as polyolefin, polyester resin, coating, food packaging, photosensitive material, etc. [0003] Benzotriazole UV absorbers are the second largest species with the most varieties and the largest output, second only to hindered amines (HALS) in plastic light stabilizers, and occupy an important position in polymer material stabilizers. my cou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88
Inventor 宋薇
Owner PONY TESTING INT GRP SHANGHAI CO LTD
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