Method for detecting specific migration amounts of nine anti-oxidants in plastic products by liquid chromatography method
2015
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.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
0
Citations
NaN
KQI