"Concentration of benzo(a)pyrene {CAS 50-32-8} per unit dry weight of biota {Fucus vesiculosus (ITIS: 11335: WoRMS 145548)}"@en . . "SDN:P01::BPDWCF05" . "The amount (mass or number of moles) of the specified analyte per unit weight of the specified organism or part thereof after water has been removed."@en . .