Detection of essence and related raw materials for food

The scope of this standard specifies the method for determining the content of 16 phthalate esters in food by gas chromatography-mass spectrometry (GC-MS); The second method specifies a gas chromatography-mass spectrometry (GC-MS) method for the determination of the content of 18 phthalate esters in food. The first method of this standard is applicable to dimethyl phthalate (DMP), diethyl phthalate (DEP), diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), di (2-methoxy) ethyl phthalate (DMEP), di (4-methyl-2-pentyl) phthalate (BMPP), di (2-ethoxy) ethyl phthalate (DEEP), di amyl phthalate (DPP), dihexyl phthalate (DHXP), butyl benzyl phthalate (BBP) in food, Determination and confirmation of the content of di (2-butoxy) ethyl phthalate (DBEP), dicyclohexyl phthalate (DCHP), di (2-ethyl) hexyl phthalate (DEHP), diphenyl phthalate (DPhP), di-n-octyl phthalate (DNOP), and di-nonyl phthalate (DNP) using internal standard method; The second method is applicable to dimethyl phthalate (DMP), diethyl phthalate (DEP), diallyl phthalate (DAP), diisobutyl phthalate (DIBP), dibutyl phthalate (DBP), di (2-methoxy) ethyl phthalate (DMEP), di (4-methyl-2-pentyl) phthalate (BMPP), di (2-ethoxy) ethyl phthalate (DEEP), di (2-pentyl) phthalate (DPP), and dihexyl phthalate (DHXP) in food, Determination and confirmation of the content of butyl benzyl phthalate (BBP), di (2-butoxy) ethyl phthalate (DBEP), dicyclohexyl phthalate (DCHP), di (2-ethyl) hexyl phthalate (DEHP), diphenyl phthalate (DPhP), di-n-octyl phthalate (DNOP), diisoonyl phthalate (DINP), and di-nonyl phthalate (DNP) using external standard method. The first method is gas chromatography-mass spectrometry isotope internal standard method 2. The principle is to add benzoic acid esters as internal standards to the sample. Various types of food are extracted, purified, and determined by gas chromatography-mass spectrometry. Using feature selection ion monitoring scanning mode (SIM), the retention time and abundance ratio of qualitative ion fragments are used for qualitative analysis, while the isotope internal standard method is used for quantitative analysis. Unless otherwise specified, all reagents and materials used in this method are chromatographically pure, and the water is Grade II water as specified in GB/T 6682. 3.1 Reagent 3.1.1 n-hexane (C; H). 3.1.2 Acetonitrile (CH, N). 3.1.3 Acetone (CH, COCH,). 3.1.4 Dichloromethane (CHC12)

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