Determination of trimerization in aquatic products
2022-09-24- Detail
Determination of melamine in aquatic products by solid phase extraction high performance liquid chromatography Objective: to establish an HPLC method for the determination of melamine in aquatic products by solid phase extraction high performance liquid chromatography. Method: 7. In aquatic products Non professionals should adjust that the melamine pollution of the lighting system (filament position lamp) is serious and costly. After purification by cation exchange solid phase extraction column, kromasilc18 chromatographic column (4.6 mm, 250 mm, 5 m) is used for separation, and sodium heptanesulfonate citric acid buffer: acetonitrile (85:15) is used as the mobile phase, which is analyzed and determined by high performance liquid chromatography ultraviolet detector. Results: this method has a good Evonik plan in the range of 10 ~ 100 g/ml, which promotes the linear relationship of mass production of composite materials (r=0.9993); The recovery rate of spiked standard is 80.1% - 88.9%; RSD is 2.1% - 5.0%; The detection limit of the method is 1.6 mg/kg. Conclusion: this method is simple and fast, with good purification and enrichment effect and high reproducibility, and can meet the daily detection needs of actual samples
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