title: Uptake rates of semipermeable membrane devices (SPMDs) for PCDDs, PCDFs and PCBs in water and sediment.
abstract: Uptake rates of several PCDDs, PCDFs and PCBs were measured for semipermeable membrane devices (SPMDs) under controlled conditions in bulk water and sediment. The study was performed at 19 degrees C and 11 degrees C, and water and sediment concentrations were measured during the exposure. Linear uptake rates for specific PCDD/Fs and PCBs in 19 degrees C water varied from 34 to 111 l/m2 day and in 11 degrees C water from 8.8 to 96 l/m2 day for the whole SPMD. Uptake rates at 19 degrees C sediment ranged from 9.0 to 80 mgOC/m2 day and in 11 degrees C sediment, from 3.0 to 31, mgOC/m2 day. Partitioning of the compounds between membrane and lipid was also measured during the linear uptake phase. The membrane-lipid concentration ratios ranged from 0.02 to 1.11 depending on the compound, temperature, and bulk medium.
authors.affiliation: Department of Chemistry, University of Jyväskylä, Finland. alranta@cc.jyu.n
authors.forename: A L
authors.initials: AL
authors.lastname: Rantalainen
authors.forename: W J
authors.initials: WJ
authors.lastname: Cretney
authors.forename: M G
authors.initials: MG
authors.lastname: Ikonomou
mesh_terms: D001572:Benzofurans / Q000032:analysis / Q000737:chemistry*; D000072338:Dibenzofurans, Polychlorinated; D008567:Membranes, Artificial; D010539:Permeability; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000737:chemistry*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D012987:Soil / Q000032:analysis; D014867:Water / Q000032:analysis / Q000737:chemistry*
chemical_list: D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D008567:Membranes, Artificial; D000072317:Polychlorinated Dibenzodioxins; D012987:Soil; D014867:Water; D011078:Polychlorinated Biphenyls