A method for measuring radiolysis product 2-dodecylcyclobutanone

Abstract

The invention discloses a method for measuring radiolysis product 2-dodecylcyclobutanone. The method is to add the irradiated sample to a chromatographic column filled with silica gel, use n-hexane as the first eluent to elute neutral hydrocarbon impurities, and use n-hexane with a volume percentage of 1-2% ether The alkane solution is the second part eluent eluting 2-dodecylcyclobutanone, reclaims the eluent of the described second part eluent containing 2-dodecylcyclobutanone, then measures 2- Dodecylcyclobutanone content. The method of the present invention utilizes silica gel chromatographic column to separate and extract, and uses gas chromatography to detect 2-DCB method with quantitative analysis, has good separation effect on 2-DCB in the irradiated sample, and the detection limit, precision and recovery rate all reach the irradiated Requirements for sample analysis and testing. Compared with the EN1785 method, this method has the advantages of high extraction efficiency, large sample load, low detection limit, and low cost.

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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