This Technical Specification specifies a method for the determination by gas chromatography with mass

spectrometric detection (GC-MS) of polycyclic hydrocarbons and pesticide residues in drinking water and ground

water at mass concentrations above 0,005 μg/l and surface water and waste water at mass concentrations

above 0,01 μg/l (for each single compound).

This method can apply to non-polar substances other than polycylic aromatic hydrocarbons (PAH) and pesticide

residues. However, it is necessary to verify the applicability of this method for these compounds.

NOTE 1 A potentially suitable method for this verification is specified in ISO/TS 13530.[3]

This Technical Specification can be used for samples containing up to 150 mg/l of suspended matter.

NOTE 2 Determination of PAH using GC-MS lies within the scope of ISO 28540.[9]