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Irradiation products discrimination method based on ESR method

A technology of irradiation and products, applied in the field of identification of irradiated products based on the ESR method, can solve the problems of poor versatility, and achieve the effects of fast judgment speed, improved accuracy, and strong source consistency

Inactive Publication Date: 2008-08-13
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the existing method for detecting irradiated products needs to be sampled from the product, thus having poor versatility, and to invent an irradiated product based on the ESR method that has wide adaptability, is simple and easy to implement, and highlights the characteristics of product packaging. Identification method

Method used

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  • Irradiation products discrimination method based on ESR method

Examples

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Effect test

example 1

[0036] Choose unopened paper packaging. Tear off the tape, unpack, take out some samples of the tape and the inner wall of the paper package, freeze-dry at low temperature, cut into pieces, weigh the samples of equal weight, put them into ESR measuring tubes respectively; measure with ESR spectrometer. Measurement conditions (microwave frequency: X-band, power 20mW; magnetic field: central magnetic field 348mT, scan width ±10mT; signal channel: modulation frequency 100kHz, modulation amplitude 0.2mT, time constant 40ms, scan rate 15mT / min, gain 5.0×10 4 ); ESR spectrum characteristics of the paper package sample: a downward shoulder g appears on the right side of the main spectrum 纸右 =1.9990, the ESR spectrum characteristic of adhesive tape sample: two main peaks appear, g 胶1 =2.0320, g 胶2 =2.0022, the product in the package is an irradiated sample.

example 2

[0038] Choose unopened paper packaging. Tear off the tape, unpack, take out some samples of the tape and the inner wall of the paper package, freeze-dry at low temperature, cut into pieces, weigh the samples of equal weight, put them into ESR measuring tubes respectively; measure with ESR spectrometer. Measurement conditions (microwave frequency: X-band, power 20mW; magnetic field: central magnetic field 348mT, scan width ±10mT; signal channel: modulation frequency 100kHz, modulation amplitude 0.2mT, time constant 40ms, scan rate 15mT / min, gain 5.0×10 4); ESR spectrum characteristics of the paper package sample: a downward shoulder g appears on the right side of the main spectrum 纸右 =1.9996, the ESR spectrum characteristic of adhesive tape sample: two main peaks appear, g 胶1 =2.0333, g 胶2 =2.0026, the product in the package is an irradiated sample.

example 3

[0040] Choose unopened paper packaging. Tear off the tape, unpack, take out some samples of the tape and the inner wall of the paper package, freeze-dry at low temperature, cut into pieces, weigh the samples of equal weight, put them into ESR measuring tubes respectively; measure with ESR spectrometer. Measurement conditions (microwave frequency: X-band, power 20mW; magnetic field: central magnetic field 348mT, scan width ±10mT; signal channel: modulation frequency 100kHz, modulation amplitude 0.2mT, time constant 40ms, scan rate 15mT / min, gain 5.0×10 4 ); ESR spectrum characteristics of the paper package sample: a downward shoulder g appears on the right side of the main spectrum 纸右 =2.0000, the ESR spectrum characteristic of adhesive tape sample: two main peaks appear, g 胶1 =2.0370, g 胶2 =2.0034, the product in the package is an irradiated sample.

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Abstract

A method for identifying irradiation products based on ESR method is provided, which is characterized in extracting packing box adhesive tape and paper packing inner wall as identified materials, obtaining the spectrum by ERS instrument and parsing the spectrum to determine whether the identified materials has the characteristic spectrum of irradiation. The method of the present invention tests whether the adhesive tape and paper packing have irradiation characters by ERS method and validates for each other to improve the veracity of irradiation identification. The method of present invention has important significance in determining irradiation safety of food and medical articles for government monitoring department, corporation even consumers.

Description

technical field [0001] The invention relates to a method for identifying irradiated products, in particular to a method for identifying whether a product in a package packed with paper is irradiated by using ESR (electron spin resonance) technology, specifically a method for It is an irradiated product identification method based on the ESR method to identify whether the packaging of the product is irradiated or not, and indirectly determine whether the product is irradiated or not. Background technique [0002] High-energy radiation technology is called green processing technology. In the past 10 years, it is playing an increasingly important role in food hygiene, food preservation, medical device sterilization, and hygiene product disinfection with its unique advantages of fast speed, no pollution, no residual toxicity, no damage to packaging, and energy saving. my country has a population of 1.3 billion, 310,000 medical and health institutions, and the use of medical sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/10
Inventor 赵永富刘婷
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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