. . . . . . . . . . . . . "Concentration of 2,2',3,4,4',5'-hexachlorobiphenyl {PCB138 CAS 35065-28-2} per unit dry weight of sediment <62um"@en . . . . . . "accepted"@en . "SDN:P01::IC000114" . "Unavailable"@en . . "CB138_CS_SED62_D" .