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This European Standard specifies a method for the determination of six selected polybrominated diphenyl ethers (PBDEs) listed in Table 1, representative for technical BDEs in water samples in mass concentrations ≥ 0,025 ng/l (for each individual congener). (The limit of quantification (LOQ) should be determined according to ISO 13530, on the basis of replicate determinations of the procedural blank, carried out under reproducibility conditions.) The method uses solid-phase disk extraction (SPE-disk) in combination with gas chromatography-mass spectrometry (GC-MS). It is applicable to the analysis of PBDEs in surface water containing suspended particulate matter (SPM) up to 500 mg/l (whole water samples), drinking water and groundwater. This method may be used for the analysis of other BDE congeners not listed in Table 1 or other types of water. However, it is important to verify its applicability before use. (...)