Method for measuring radiolysis offspring 2-dodecyl ring butanone

Abstract

The invention discloses a method for detecting radiolysis products(2-dodecyl cyclobutanone); the method includes the following steps that: radiating samples are put in a chromatography column using silica gels as fillers, and the normal hexane is used as the first-part eluant for eluting neutral hydrocarbon impurities; the normal hexane solution in which the volume percent of the ether is 1 to 2 percent is used as the second-part eluant for eluting the 2-dodecyl cyclobutanone, and the eluent of the second-part eluant containing the 2-dodecyl cyclobutanone is recovered, and then the content of the 2-dodecyl cyclobutanone is measured. The method of the invention utilizes the separation and extraction of the silicon gel chromatography column and the air-mass combination quantitative analysis to detect the 2-DCB, thereby the separation effect of the 2-DCB in the radiating samples is good, and the detection limit, the precision and the rate of recovery all meet requirements on the analysis and detection of the radiating samples. Compared with the EN1785 method, the method of the invention has the advantages of high extracting efficiency, big carrying capacity of samples, low detection limit and low cost, etc.

Description

technical field [0001] The invention relates to a method for measuring radiolysis product 2-dodecylcyclobutanone. Background technique [0002] Irradiation treatment can kill or reduce pathogenic microorganisms, bacteria, parasites, etc. in food, and can effectively improve the hygiene and safety of food and extend the shelf life. Food irradiation is one of the fastest-growing fields of radiation technology application. [0003] The irradiated food industry is developing rapidly around the world, commercial application, international trade and market supervision of irradiated food, there is an urgent need to carry out research on the identification and detection methods of irradiated food. [Predecessor research progress] International organizations such as IAEA, FAO, WHO and the European Union have taken the lead in the research on the identification and detection methods of some irradiated foods. The chemical method is to use the hydrocarbons and 2-Alkylcyclobutanones (2-A...

AI Technical Summary

Problems solved by technology

The currently used fat-containing irradiated food identification method (EN1785) uses Florisil columns to purify and separate irradiated samples. Due to the high price of Florisil, the amount of samples carried is limited and the dose detection limit is high (AnonymousEUROPEAN Committee for Standardization. Foodstuffs. EN 1785, 1996b)

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