The method describes the qualitative and semi-quantitative analysis of six polycyclic aromatic hydrocarbons (PAH) in unfiltered water samples such as surface water, rainwater and groundwater. Explanation Some PAH are potentially carcinogenic or are suspected of having carcinogenic properties. They appear on the lARC lis [12]. They occur in a dis olved state or adsorbed to solid materials (suspended matter, sediment) in almost all waters. The PAHs lis ed in Table 1 are used as indicators of a much larger group of PAHs that occur in natural waters. The method is aimed at the analysis of these six PAH. The PAH mentioned here do not have to be representative of the PAH that occur in wastewater. Based on the Revis on of the Water Supply Decree following the directive of the Council of the European Communities [1] and the Indicative Multi-annual Program [2], a maximum permitted concentration for PAH of 0.2 jug/l will be used. The method is suitable for a PAH content of 10 to 1000 ng/l for each individual component. However, the extracts applied to the thin-layer plate may not contain more than 2 µg of PAH in total. For a quantitative analysis of the six PAH, the high-pressure liquid chromatography method is recommended (see NEN 6524).
NEN 6525-1982 history
1982NEN 6525-1982 Water - Determinalion of the content of six Polycyclic Aromatic Hydrocarbons (PAH) by thin-layer chromatography