BS EN 13130-7:2004 – Materials and articles in contact with foodstuffs — Plastics substances subject to limitation — Part 7: Determination of monoethylene glycol and diethylene glycol in food simulants
1 Scope
This part of this European Standard specifies methods for the determination of monoethylene glycol and diethylene glycol in the food simulants; water, 3 % (w/v) acetic acid, 15 % (v/v) ethanol and olive oil and other fatty food simulants, simulants D, e.g. a mixture of synthetic triglycerides or sunflower oil or corn oil.
The methods are capable of determining monoethylene glycol and diethylene glycol in food simulants separately, or combined, at the specific migration limit SML (T) of 30 mg/kg. NOTE This method was developed for the determination of monoethylene glycol and diethylene glycol in 15 % (v/v) aqueous ethanol, as required by the regulations in force at the time the development work was carried out. However, this method, developed for 15 (v/v) aqueous ethanol, should be applicable to the determination in 10 (v/v) aqueous ethanol.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).
EN 13130-1:2004, Materials and articles in contact with foodstuffs – Plastics substances subject to limitation – Part 1: Guide to test methods for the specific migration of substances from plastics to foods and food simulants and the determination of substances in plastics and the selection of conditions of exposure to food simulants.
EN ISO 1042; Laboratory glassware – One-mark volumetric flasks (ISO 1042:1998).
ISO 385 (all parts), Laboratory glassware – Burettes.
ISO 835 (all parts); Laboratory glassware – Graduated pipettes.
ISO 4788, Laboratory glassware – Graduated measuring cylinders.
3 Principle
After addition of an internal standard the aqueous food simulants or the olive oil water extract is directly injected for gas chromatographic analysis using a cold on-column injector. Detection limits are approximately 1 mg/kg in the food simulants. The concentrations of monoethylene glycol and diethylene glycol are measured by comparison of peak height or area ratios against standards.
4 Reagents
WARNING: All chemicals are hazardous to health to a greater or lesser extent. It is beyond the scope of this standard to give instructions for the safe handling of all chemicals, that meet, in full, the legal obligations in all countries in which this standard may be followed. Therefore, specific warnings are not given and users of this standard shall ensure that they meet all the necessary safety requirements in their own country.
BS EN 13130-7:2004 – Materials and articles in contact with foodstuffs — Plastics substances subject to limitation — Part 7: Determination of monoethylene glycol and diethylene glycol in food simulants