GB/T 23296.18-2009Food contact materials -- Polymer -- Determination of monoethylene glycol and diethylene glycol in food simulants -- Gas chromatography (English PDF)

Foreword

The standard reference to EU standards CEN13130-7.2005 "food contact plastic materials and products for restricted substances - Part 7.

Food simulants of ethylene glycol and diethylene glycol Determination "(in English) to develop.

Appendix A of this standard is an informative annex.

This standard was proposed by the National Certification and Accreditation Administration Committee.

This standard by the National Import and Export Food Safety Inspection Standardization Technical Committee (SAC/TC445) centralized.

This standard was drafted. Chinese Academy of Inspection and Quarantine, Guangdong, People's Republic of China Exit Inspection and Quarantine, the People's Republic of China State and Hubei Entry-Exit Inspection and Quarantine People's Republic of China Inner Mongolia Erenhot.

1 Scope

This standard specifies the method for determination of food simulants glycol and diethylene glycol.

This standard applies to water, 3% (mass concentration) solution of acetic acid, 10% (volume fraction) ethanol solution and olive oil Four Food simulants Determination of ethylene glycol and diethylene glycol contents.

Water, 3% (mass concentration) solution of acetic acid and 10% (volume fraction) ethanol three kinds of water-based food simulants ethylene glycol and diethylene glycol the lower limit of detection are 3mg/L; olive oil Determination of ethylene glycol and diethylene glycol lower limits were 3mg/kg.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 23296.1-2009 plastic food contact materials restricted substances in food and food simulants to specific substances in plastics Migration testing and determination of methods and conditions of exposure to food simulants Guide selection Principle 3 Food simulants ethylene glycol and diethylene glycol using capillary column separation, hydrogen flame ionization detector for detection.

Water-based food simulants direct injection analysis, food simulants olive oil by water extraction backward sample analysis, using the internal standard method, internal standard 1,4-butanediol.

4 Reagents and materials

Unless otherwise specified, water GB/T 6682 provided a water, reagents were of analytical grade.

4.1 glycol (monoethyleneglycol, C2H6O2, CAS number. 107-21-1).

4.2 diethylene glycol (diethyleneglycol, C4H10O3, CAS number. 111-46-6).

4.3 1,4-butanediol (butan-1,4-diol, C4H10O2, CAS number. 110-63-4).

4.4 glacial acetic acid.

4.5 ethanol.

4.6 Refined olive oil.

4.7 methanol.

4.8 heptane.

4.9 3% (mass concentration) acetic acid solution. Weigh 30g (accurate to 0.1g) in glacial acetic acid (4.4) in 1L flask, water volume.

4.10 to 10% (by volume) ethanol. Measure 100mL anhydrous ethanol (4.5) in 1L flask, water volume.

4.11 glycol (7500mg/L) and diethylene glycol (7500mg/L) stock solution. Weigh accurately 0.75g of ethylene glycol and diethylene glycol in each beaker the (accurate to 0.1mg), dissolve with methanol into the 100mL flask with methanol to volume. This solution was sealed in the dark at 5 °C Save, concentration remains stable over a month.