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Method for determining light stabilizer UV119 in leather material

A UV119 and light stabilizer technology, applied in the testing field, can solve problems such as low solubility of organic solvents, affecting test results, complex molecular structure, etc., and achieve the effects of improving solvent permeability, improving extraction efficiency, and high separation efficiency

Pending Publication Date: 2021-12-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex molecular structure of this compound, the large molecular weight, and the low solubility of conventional organic solvents, it is difficult to extract this substance from leather samples. Strong solvent organic solvents will dissolve part of the polymer matrix during the extraction process, which will cause serious matrix interference during the instrument detection process and affect the detection results

Method used

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  • Method for determining light stabilizer UV119 in leather material
  • Method for determining light stabilizer UV119 in leather material
  • Method for determining light stabilizer UV119 in leather material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Instrument and reagents

[0072] Agilent 1290 super high performance liquid chromatograph, including four-dimensional pump, online vacuum degasser, column temperature box, autosampler, and diode array detector (DAD); Milli-Q type pure water system; frozen pulverizer, KQ3200DE ultrasonic cleaner.

[0073] Methanol, dichloromethane, tetrahydrofuran, dimethyl sulfoxide is HPLC stage; test water is ultrapure water. The sample solution was filtered with a 0.22 μm filter.

[0074] Comparative extract: tetrahydrofuran, dimethyl sulfoxide, dichloromethane ratio of 6: 1: 3.

[0075] 2. Chromatographic conditions

[0076] Liquid chromatography: Syncronis Amino column (100mm × 2.1mm × 1.7 μm); column temperature 35 ° C; flow rate of 0.4 ml / min; water intake is 5 μL; flow phase methanol-aqueous ammonium aqueous solution (10 mmol / L) (7) : 3 Equality); DAD detection wavelength range 180 nm-400 nm, quantitative wavelength is 230 nm.

[0077] 3. Establishment of standard working curve ...

Embodiment 2

[0088] Instrument and reagents

[0089] Agilent 1290 super high performance liquid chromatograph, including four-dimensional pump, online vacuum degasser, column temperature box, autosampler, and diode array detector (DAD); Milli-Q type pure water system; frozen pulverizer, KQ3200DE ultrasonic cleaner.

[0090] Methanol, dichloromethane, tetrahydrofuran, dimethyl sulfoxide is HPLC stage; test water is ultrapure water. The sample solution was filtered with a 0.22 μm filter.

[0091] Comparative extract: tetrahydrofuran, dimethyl sulfoxide, dichloromethane ratio of 6: 1: 3.

[0092] 2. Chromatographic conditions

[0093] Liquid chromatography: SYNCronis Amino column (100mm × 2.1mm × 1.7 μm); column temperature 35 ° C; flow rate of 0.4 ml / min; water intake is 5 μL; flow phase methanol-aqueous ammonium aqueous solution (10M mol / L) 7:3 Equality); DAD detection wavelength range 180 nm-400 nm, quantitative wavelength is 230 nm.

[0094] 3. Establishment of standard working curve

[0...

Embodiment 3

[0102] Instrument and reagents

[0103] Agilent 1290 super high performance liquid chromatograph, including four-dimensional pump, online vacuum degasser, column temperature box, autosampler, and diode array detector (DAD); Milli-Q type pure water system; frozen pulverizer, KQ3200DE ultrasonic cleaner.

[0104] Methanol, dichloromethane, tetrahydrofuran, dimethyl sulfoxide is HPLC stage; test water is ultrapure water. The sample solution was filtered with a 0.22 μm filter.

[0105] Comparative extract: tetrahydrofuran, dimethyl sulfoxide, dichloromethane ratio of 6: 1: 3.

[0106] 2. Chromatographic conditions

[0107] Liquid chromatography: SYNCronis Amino column (100mm × 2.1mm × 1.7 μm); column temperature 35 ° C; flow rate of 0.4 ml / min; water intake is 5 μL; flow phase methanol-aqueous ammonium aqueous solution (10M mol / L) 7:3 Equality); DAD detection wavelength range 180 nm-400 nm, quantitative wavelength is 230 nm.

[0108] 3. Establishment of standard working curve

[0...

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Abstract

The invention discloses a method for determining a light stabilizer UV119 in leather. The determination method comprises the following steps: by taking a light stabilizer UV119 as a standard substance, performing analyzing through an ultra performance liquid chromatograph device, and establishing a standard working curve of the light stabilizer UV119; enabling the leather material to be subjected to liquid nitrogen freezing crushing and sieving treatment; extracting the sieved leather material by adopting a compound solvent to obtain a leather material extracting solution; and analyzing the leather material extracting solution by adopting an ultra-performance liquid chromatograph device so as to measure the content of the light stabilizer UV119 in the leather material. According to the method for determining the light stabilizer UV119 in the leather material, the detection efficiency is high, accurate quantitative detection can be achieved, and meanwhile the detection result is more accurate through liquid nitrogen freezing and smashing treatment and use of the compound solvent.

Description

Technical field [0001] The present invention belongs to the field of testing, and more particularly to a method of determining the light stabilizer UV119 in a leather material. Background technique [0002] Leather materials such as PVC, polyurethane, in the generation process, to increase the stability of the light such as the material, need to add a quantity of light stabilizer, but the light stabilizer content added to the formulation is specifically, the material is added The concentration stability needs to be measured. [0003] Automotive interior parts will receive sunlight during use, in order to extend the service life of the interior parts, delaying its gradual aging in high temperature conditions, and a certain amount of light stabilizer is added during the production process. In order to maintain the stability of the production process, it is important to ensure the longitudinal use of leather, accurately acquire the product stabilizer content. The blocked amine light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/74
CPCG01N30/06G01N30/74
Inventor 刘蔓韩莹莹时晓露孔丽春
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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