EN ISO 15303:2008

1 Scope
2 Normative reference
3 Principle
4 Reagents
5 Apparatus
6 Procedure
  6.1 Preparation of standard and blank
  6.2 Preparation of internal standards
  6.3 Preparation of analytical sample
  6.4 Determination by GC/MS analysis
  6.5 Identification
7 Calculation and expression of results
  7.1 Calculation
  7.2 Expression of results
8 Precision
  8.1 Interlaboratory tests
  8.2 Repeatability
  8.3 Reproducibility
Annex A (informative) - Results of interlaboratory tests
Bibliography

This International Standard specifies a method for the detection and identification of a volatile organic contaminantin edible oils.It is applicable to the identification of volatile industrial chemicals in both crude and refined edible oils that aresuspected of being contaminated. It also enables determination of the concentration of the contaminant.This International Standard is not applicable to the determination of the concentration of chemicals that may reactwith the edible oil or with one of its natural components. In these cases, the presence of the contaminant maysometimes be established on a qualitative basis. Also, this International Standard is not applicable to non-volatilechemicals.This method has been shown to be applicable for the identification of the following compound classes:_ saturated halogenated hydrocarbons;_ unsaturated halogenated hydrocarbons;_ esters; aldehydes; alcohols; amines; ketones; ethers;_ cyclic and aromatic compounds;_ nitrogen compounds;_ acrylates; etc.The method has been evaluated for concentrations in the range of 1 mg/kg to 10 mg/kg.