EN 13130-5:2004

Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
    4.1 Analyte and internal standard
         4.1.1 Analyte
         4.1.2 Internal standard
    4.2 Chemicals
    4.3 Solutions of standards and internal standard
         4.3.1 Preparation of stock solutions of vinylidene
               chloride
         4.3.2 Intermediate solutions of vinylidene chloride
         4.3.3 Internal standard stock solution
         4.3.4 Intermediate internal standard solution
5 Apparatus
6 Samples
    6.1 Laboratory samples
    6.2 Preparation of test samples
         6.2.1 General
         6.2.2 Aqueous food simulants
         6.2.3 Fatty food simulant
    6.3 Preparation of blank samples
    6.4 Preparation of calibration samples
7 Procedure
8 Expression of results
   8.1 Method of calculation
        8.1.1 GC interferences
        8.1.2 Graphical determination using internal standard
        8.1.3 Graphical determination via external standardization
        8.1.4 Calculation of the concentration using a response
              factor
        8.1.5 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
   9.1 Requirement for confirmation
   9.2 Confirmation by combined gas chromatography-mass
        spectrometry
   9.3 Confirmation by analysis on a GC column of different
        polarity
10 Test report
Annex A (normative) Method of standard addition
Annex B (normative) Manual sample injection
Bibliography

This part of this European Standard specifies a method for the determination of vinylidene chloride monomer in food simulants. The method is applicable to aqueous food simulants, to the fatty food simulant olive oil and other fatty food simulants, simulants D, e.g. a mixture of synthetic triglycerides or sunflower oil or corn oil. The level of vinylidene chloride determined is expressed as milligrams of vinylidene chloride per kilogram of food simulant. The method is appropriate for the quantitative determination of vinylidene chloride at a level of 0,05 mg/kg.NOTEThis method was developed for the determination of vinylidene chloride 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.