Standard No.:	GB/T 22388-2008
English Name:	Determination of melamine in raw milk and dairy products
Chinese Name:	原料乳与乳制品中三聚氰胺检测方法
Chinese Classification:	C53    Food sanitation
Professional Classification:	GB    National Standard
Issued by:	AQSIQ
Issued on:	2008-10-07
Implemented on:	2008-10-7
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	80.0
Delivery:	via email in 1 business day

This standard specifies three determination methods for melamine in raw milk, dairy products and products containing milk, i.e. high-performance liquid chromatography (HPLC), liquid chromatography-mass spectrum/mass spectrography (LC-MS/MS) and gas chromatography-mass spectrum [including gas chromatography-mass spectrography (GC-MS), gas chromatography-mass spectrum/mass spectrography (GC-MS/MS)]. This standard is applicable to the quantitative determination of melamine in raw milk, dairy products and products containing milk; liquid chromatography-mass spectrum/mass spectrometry and gas chromatography-mass spectrum/mass spectrography (including gas chromatography-mass spectrum/mass spectrum) are simultaneously applicable to the qualitative corroboration of melamine in raw milk, dairy products and products containing milk. The quantitation limit of high-performance liquid chromatography in this standard is 2 mg/kg; the quantitation limit of liquid chromatography-mass spectrum/mass spectrometry is 0.01 mg/kg; the quantitation limit of gas chromatography-mass spectrography is 0.05 mg/kg (among which the quantitation limit of gas chromatography-mass spectrum/mass spectrography is 0.005 mg/kg).

Foreword 1 Scope 2 Normative References 3 Method I High-Performance Liquid Chromatography (HPLC) 3.1 Principle 3.2 Reagents and Materials 3.3 Instruments and Equipments 3.5 High-Performance Liquid Chromatography Determination 3.6 Blank Test 3.8 Recovery Rate 3.9 Permissible Deviation 4 Method II Liquid Chromatography-Mass Spectrum/Mass Spectrometry(LC-MS/MS) 4.1 Principle 4.2 Reagents and Materials 4.5 Liquid Chromatography-Mass Spectrum/Mass Spectrum Determination 4.6 Blank Test 4.7 Method Quantitation Limit 4.8 Recovery Rate 4.9 Permissible Deviation 5 Method III Gas Chromatography-Mass Spectrum(GC-MS and GC-MS/MS) 5.1 Principle 5.2 Reagents and Materials 5.3 Instruments and Equipments 5.4 Sample Treatment 5.5 Gas Chromatography-Mass Spectrum Determination 5.6 Blank Test 5.7 Method Quantitation Limit 5.8 Recovery Rate 5.9 Permissible Deviation Appendix A(Informative)Chromatogram of Standard Melamine