EN 13130-7:2004

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Samples
7 Procedure
   7.1 Preparation of standards
       7.1.1 Intermediate standards
       7.1.2 Internal standard, 800 mg/l butan-1,4-diol
       7.1.3 Working standards for aqueous simulants
       7.1.4 Working standards for olive oil
   7.2 Preparation of calibration graphs
       7.2.1 Injection of standards
       7.2.2 Validation of stock monoethylene glycol/diethylene
             glycol solution
   7.3 Extraction of olive oil simulant migration test samples
   7.4 Preparation of aqueous simulant migration test samples
   7.5 Injection of samples
8 Expression of results
   8.1 Method of calculation
       8.1.1 As milligrams of monoethylene glycol and diethylene
             glycol per kilogram of food simulant
       8.1.2 As milligrams of monoethylene glycol and diethylene
             glycol per square decimetre of surface area of plastic
             material or article
       8.1.3 Calculation of the specific migration
   8.2 Precision
       8.2.1 Validation
       8.2.2 Repeatability and reproducibility
       8.2.3 Detection limit
9 Confirmation of monoethylene glycol and diethylene glycol
   9.1 Requirement for confirmation
   9.2 Confirmation by re-analysis using confirmed by gas
       chromatography - mass spectrometry
10 Test report
Annex A (informative)
Annex B (informative)
Bibliography

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. NOTEThis 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.