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Method for detecting D-limonene in regenerated PET (Polyethylene Terephthalate) bottle

A detection method, limonene technology, applied in the field of chemical analysis, can solve problems such as the lack of related technologies for the determination of D-limonene, and achieve high accuracy and high sensitivity

Inactive Publication Date: 2018-11-20
SHANDONG INST FOR PROD QUALITY INSPECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the data, researchers use HPLC method to determine the content of limonene in spearmint oil, and some scholars use GC method to determine the content of limonene in compound limonene capsules, but there is no related technology for the determination of D-limonene in recycled PET bottles

Method used

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  • Method for detecting D-limonene in regenerated PET (Polyethylene Terephthalate) bottle
  • Method for detecting D-limonene in regenerated PET (Polyethylene Terephthalate) bottle
  • Method for detecting D-limonene in regenerated PET (Polyethylene Terephthalate) bottle

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Experimental program
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Effect test

Embodiment 1

[0025] 1.1 Reagents

[0026] Standard: D-limonene. Purity > 99%, standard products were purchased from the National Center for Standardization, n-hexane was chromatographic grade, purchased from MERCK Chromatographic Reagent Company.

[0027] 1.1.1 Test materials

[0028] The recycled PET bottle was selected as the test sample, and the D-limonene contained in the sample was detected and analyzed.

[0029] 1.2 Instruments

[0030] Gas chromatography-mass spectrometry (GC-MS, 7890B-5977A, Agilent Technologies Co., Ltd., USA); pulverizer (IKA A10, Germany); electronic analytical balance: model: ME204, Mettler Toledo, Switzerland. Liquid nitrogen tank: Model: YDS-50, Sichuan Dongya liquid nitrogen tank.

[0031] 1.2 Instrument reference conditions

[0032] 1.2.1 Chromatographic conditions

[0033] Chromatographic column, DB-5MS capillary column (30m×0.25mm×0.25µm) or equivalent chromatographic column; inlet temperature: 250°C; heating program: initial column temperature is 6...

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Abstract

The invention relates to the technical field of chemical analysis and in particular relates to a method for detecting D-limonene in a regenerated PET (Polyethylene Terephthalate) bottle. The method comprises the following steps: extracting, and detecting the filtrate by using a gas chromatograph-mass spectrometer. The invention establishes a method for determining the D-limonene in the regeneratedPET bottle by the gas chromatography-mass spectrometry, and the method has the advantages of being simple, rapid, efficient, high in sensitivity, high in accuracy and the like and can realize detection and confirmation of the D-limonene in the regenerated PET bottle.

Description

technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a detection method for D-limonene in recycled PET bottles. Background technique [0002] Polyethylene terephthalate (PET) has good physical properties such as transparency, gloss, stability, formability and safety, and is widely used in many fields, especially in the food plastic packaging industry, but PET recycling And safety evaluation has become a research hotspot today. At present, physical recycling is the best method in the world, and chemical recycling is also an important process. The United States, the European Union and other countries use challenge tests to verify the safety of recycled PET, and the test of volatile organic compounds is an important part of the challenge test. The physical method of producing recycled PET for food packaging mainly has three key control procedures: raw material system recovery, deep cleaning and deep purification. Among ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062
Inventor 许超张智力王君杨学军
Owner SHANDONG INST FOR PROD QUALITY INSPECTION
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