Method for detecting specific migration amounts of nine anti-oxidants in plastic products by liquid chromatography method

Abstract

The invention provides a high performance liquid chromatography-ultraviolet detection method for simultaneously detecting specific migration amounts of nine anti-oxidants in five food simulants. The method comprises immersing a sample to be measured in food simulants, carrying out cooling to a room temperature, carrying out uniform mixture, metering a volume of the water-based food simulants by a tris(2-carboxyethyl)phosphine hydrochloride-containing tetrahydrofuran mixed solution, carrying out filtration by a hydrophilic Teflon syringe filter, carrying out sample introduction, carrying out rotary distillation nitrogen-blowing condensation on the isooctane food simulants until basic drying, metering the volume by tris(2-carboxyethyl)phosphine hydrochloride-containing methanol, carrying out filtration by the hydrophilic Teflon syringe filter and carrying out sample introduction. C8 column gradient elution separation is used, detection wavelength is 285nm and a sample size is 20 microliters. The method has good chromatographic separation and linear relationship, has high recovery rate and high accuracy, has a quantification limit satisfying limitation requirements on the total migration amount of the nine anti-oxidants in the EU NO 10 / 2011 regulation and has been used for detection of a practical sample.

Description

technical field [0001] The invention belongs to the field of chemical detection, and relates to a detection method for the specific total migration of 9 kinds of harmful antioxidants in plastic food packaging contact materials, in particular to a high-performance liquid chromatography ultraviolet (HPLC-UV) method for the determination of plastic food Test method for specific migration of 9 antioxidants in packaging materials and containers. Background technique [0002] Plastic food contact materials often need to add functional additives such as antioxidants and ultraviolet absorbers to prolong the service life of related products. However, during the use of the product, these added antioxidants will also migrate into the food, directly endangering human health. The (EU) NO10 / 2011 regulation issued by the European Union in 2011 limits the specific migration amount (SML) or specific total migration amount [SML(T)] of various antioxidants. [0003] At present, the detection...

AI Technical Summary

Problems solved by technology

The existing literature on the detection of antioxidants in food simulants can only detect the specific migration of several antioxidants in food simulants, because the types of antioxidants detected at the same time are not consistent with the attached table of European Union (EU) NO10 / 2011 regulations The types of the 9 antioxidants in 2 are not completely consistent, and the specific total migration of the 9 antioxidants in the EU (EU) NO10 / 2011 regulations cannot be detected

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