This International Standard specifies a method for quantitative gas-chromatographic determination of volatile hydrocarbons, naphthalene and volatile halogenated hydrocarbons in soil. This International Standard is applicable to all types of soil. Under the conditions specified in this International Standard, the following limits of determinations apply (expressed on basis of dry matter): -- volatile hydrocarbons and naphthalene: 0,1 mg/kg; -- volatile halogenated hydrocarbons: 0,01 mg/kg. The lower limit of determination is dependent on the equipment used and the quality of the methanol grade used for the extraction of the soil sample.