title: Studies and evaluation of the potential toxicity of decabromodiphenyl ethane to five aquatic and sediment organisms.
abstract: The potential toxicity of decabromodiphenyl ethane (DBDP-Ethane) was explored in 5 types of organisms residing in the water column and/or sediment, e.g. Oncorhynchus mykiss, Pseudokirchneriella subcapitata, Daphnia magna, Chironmus riparius, and Lumbriculus variegates. Fish, algae or Daphnia were unaffected by acute exposures to water accommodated fractions of 110mg DBDP-Ethane/L. Chronic exposure to DBDP-Ethane at the highest dose tested, 5000mg/kg dry sediment, did not affect midge mean development times, emergence or development rates or oligochaete survival, reproduction or dry weight. The chronic EC50, LOEC and NOEC were ≥5000mg/kg in the two sediment species. Applying an assessment factor of 50, the unbounded predicted no effect concentration (PNEC(sediment)) was 100mg/kg dry sediment. The calculated PNEC indicates DBDPE-Ethane presents little risk to sediment organisms. These results add to DBDP-Ethane's existing database in the terrestrial compartment and mammals.
authors.affiliation: Albemarle Corporation, Baton Rouge, LA 70801, USA. marcia.hardy@albemarle.com
authors.forename: M L
authors.initials: ML
authors.lastname: Hardy
authors.forename: H O
authors.initials: HO
authors.lastname: Krueger
authors.forename: A S
authors.initials: AS
authors.lastname: Blankinship
authors.forename: S
authors.initials: S
authors.lastname: Thomas
authors.forename: T Z
authors.initials: TZ
authors.lastname: Kendall
authors.forename: D
authors.initials: D
authors.lastname: Desjardins
mesh_terms: D000818:Animals; D001969:Bromobenzenes / Q000633:toxicity*; D002683:Chironomidae / Q000187:drug effects; D000460:Chlorophyta / Q000187:drug effects; D003621:Daphnia / Q000187:drug effects / Q000254:growth & development; D019015:Geologic Sediments / Q000737:chemistry; D009835:Oligochaeta / Q000187:drug effects; D017686:Oncorhynchus mykiss; D012098:Reproduction / Q000187:drug effects; D018570:Risk Assessment; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D001969:Bromobenzenes; D014874:Water Pollutants, Chemical; C491509:decabromodiphenyl ethane