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[Determination of cyanuric acid in milk and milk powder by high performance liquid chromatography-tandem mass spectrometry]. 2010

Qianwen Gui, and Han Liu, and Zengyun Zhao, and Tao Ding, and Jinzhong Xu, and Weijian Shen, and Chongyu Shen, and Bin Wu, and Rui Zhang
Animal, Plant and Food Inspection Center of Jiangsu Entry-Exit Inspection and Quarantine Bureau, Nanjing 210001, China. wendy_gqw@yahoo.com.cn

A method for the determination of cyanuric acid (CYA) in milk and milk powder was developed using high performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI MS/MS). The target analyte was extracted from samples by acetonitrile, and the proteins were precipitated at the same time. The supernatant was cleaned up and enriched with a strong anion exchange column, analysed by HPLC-MS/MS with an AX column, and quantified by internal standard method. Good linearity was obtained in the range of 50-2000 microg/L. The recoveries were all ranged from 97% to 121% at three levels, 200, 500 and 1000 microg/kg, and the relative standard deviations (RSDs) were all below 4.8%. Limit of quantification (LOQ) was 200 microg/kg. The method has high accuracy and precision, the operation is fast, easy and suitable for the determination of CYA in milk and milk powder.

UI MeSH Term Description Entries
D008892 Milk The off-white liquid secreted by the mammary glands of humans and other mammals. It contains proteins, sugar, lipids, vitamins, and minerals. Cow Milk,Cow's Milk,Milk, Cow,Milk, Cow's
D002851 Chromatography, High Pressure Liquid Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed. Chromatography, High Performance Liquid,Chromatography, High Speed Liquid,Chromatography, Liquid, High Pressure,HPLC,High Performance Liquid Chromatography,High-Performance Liquid Chromatography,UPLC,Ultra Performance Liquid Chromatography,Chromatography, High-Performance Liquid,High-Performance Liquid Chromatographies,Liquid Chromatography, High-Performance
D005506 Food Contamination The presence in food of harmful, unpalatable, or otherwise objectionable foreign substances, e.g. chemicals, microorganisms or diluents, before, during, or after processing or storage. Food Adulteration,Adulteration, Food,Adulterations, Food,Contamination, Food,Contaminations, Food,Food Adulterations,Food Contaminations
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014227 Triazines Heterocyclic rings containing three nitrogen atoms, commonly in 1,2,4 or 1,3,5 or 2,4,6 formats. Some are used as HERBICIDES. Triazine,Benzotriazines
D053719 Tandem Mass Spectrometry A mass spectrometry technique using two (MS/MS) or more mass analyzers. With two in tandem, the precursor ions are mass-selected by a first mass analyzer, and focused into a collision region where they are then fragmented into product ions which are then characterized by a second mass analyzer. A variety of techniques are used to separate the compounds, ionize them, and introduce them to the first mass analyzer. For example, for in GC-MS/MS, GAS CHROMATOGRAPHY-MASS SPECTROMETRY is involved in separating relatively small compounds by GAS CHROMATOGRAPHY prior to injecting them into an ionization chamber for the mass selection. Mass Spectrometry-Mass Spectrometry,Mass Spectrometry Mass Spectrometry,Mass Spectrometry, Tandem

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