EN ISO 22155:2016

European foreword
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling, preservation, and sample pretreatment
7 Procedure
8 Calculation
9 Expression of results
10 Precision
11 Test report
Annex A (informative) - Relative retention times with
        respect to ethylbenzene-D10 of volatile aromatic
        hydrocarbons and volatile halogenated
        hydrocarbons - Examples of suitable target
        and qualifier ions
Annex B (normative) - Check on internal standards
Annex C (informative) - Validation (general)
Annex D (informative) - Performance characteristics
Bibliography

ISO 22155:2016 specifies a static headspace method for quantitative gas chromatographic determination of volatile aromatic and halogenated hydrocarbons and selected aliphatic ethers in soil.ISO 22155:2016 is applicable to all types of soil.The limit of quantification is dependent on the detection system used and the quality of the methanol grade used for the extraction of the soil sample.Under the conditions specified in this International Standard, the following limits of quantifications apply (expressed on basis of dry matter).Typical limit of quantification when using GC-FID:- volatile aromatic hydrocarbons: 0,2 mg/kg;- aliphatic ethers as methyl tert.-butyl ether(MTBE) and tert.-amyl methyl ether (TAME): 0,5 mg/kg.Typical limit of quantification when using GC-ECD:- volatile halogenated hydrocarbons: 0,01 mg/kg to 0,2 mg/kg.Lower limits of quantification for some compounds can be achieved by using mass spectrometry (MS) with selected ion detection (see Annex D).