GB/T 21928-2008Determination of phthalate esters in food plastic packaging materials (English PDF)

3.1 N-hexane.

3.2 Acetone.

3.3 16 kinds of phthalate esters standard products. dimethyl phthalate (DMP), diethyl

phthalate (DEP), diisobutyl phthalate (DIBP), Dibutyl phthalate (DBP), bis(2-methoxyethyl)

phthalate (DMEP), bis(4-methyl-2-pentyl) phthalate (BMPP), bis(2-ethoxyethyl) phthalate

(DEEP), dipentyl phthalate (DPP), dihexyl phthalate (DHXP), benzyl butyl phthalate (BBP),

bis(2-n-butoxyethyl) phthalate (DBEP), dicyclohexyl phthalate (DCHP), bis(2-ethylhexyl)

phthalate (DEHP), diphenyl phthalate, di-n-octyl phthalate (DNOP), dinonyl phthalate (DNP).

The purity is shown in Appendix B.

4.1 Gas chromatography - mass spectrometry (GC-MS).

4.2 Analysis balances. Sensitivity of 0.1 mg and 0.01 g.

4.3 Ultrasonic generator.

5.1 Sample treatment

Pulverize the sample to fine particles of which the single particle <= 0.02 g. Mix well.

Accurately weigh 0.2 g of (accurate to 0.1 mg).

5.2 Blank test

The reagent used in the shall be treated according to 5.1 treatment. Then perform GC-MS

analysis.

5.3 Determination

5.3.1 Chromatographic conditions

Column. HP-5MS capillary column [30 m × 0.25 mm (inner diameter) × 0.25 µm] or

equivalent type column;

5.4 Qualitative confirmation

5.3 The instrument is under the condition of 5.3.The selected ion chromatogram peaks of test

sample solutions OCCUR at the same retention time (0.5%) to that of the standard products.

5.5 Quantitative Analysis

This standard adopts the external standard calibration curve method for quantitative

determination.

0.05 mg/kg - 0.2 mg/kg, the absolute difference of 2 independent test results, obtained under

the repeatability condition of this standard, must not exceed 30% of the arithmetic mean.

Appendix A

(Informative)

Information of phthalate esters compounds

Appendix B

(Informative)

Standard product purity of phthalate esters compounds

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