A standard solution in acetonitrile of the six polycyclic aromatic hydrocarbons named as reference substances in the EC Directive relating to the quality of water intended for human consumption (80/778/EEC)
Indeno(1,2,3-cd)pyrene.................................. 2 mg/L Fluoranthene ................................................ 10 mg/L
Benzo(ghi)perylene ........................................ 2 mg/L
Benzo(b)fluoranthene..................................... 2 mg/L
Benzo(a)pyrene ............................................. 2 mg/L
Benzo(k)fluoranthene..................................... 2 mg/L