Deposition and evaporation of polychlorobiphenyl congeners to and from Siskiwit Lake, Isle Royale, Lake Superior
The relative importance of polychlorobiphenyl (PCB) transport into and out of lakes was studied by constructing a mass balance of PCB congeners in Siskiwit Lake, a remote lake in the Isle Royale National Park in Lake Superior. Measurements of winter and summer air, rain, snow, water, and sediments were obtained over several months and used to determine PCB fluxes to and from the lake, assuming steady-state conditions over 1 years. By solving the mass balance equation under selected conditions, we estimated the deposition velocity and the overall liquid water-to-air mass transfer coefficient for PCBs to be 0.16 cm/s and 0.1 m/day, respectively. Wet deposition was generally 3 times as great as dry deposition and was dominated by particle washout. Rain was a more important removal process than snow. Removal from the lake by volatilization was more important than sedimentation for most congeners.
- Research Organization:
- Indiana Univ., Bloomington (USA)
- OSTI ID:
- 6869583
- Journal Information:
- Environ. Sci. Technol.; (United States), Journal Name: Environ. Sci. Technol.; (United States) Vol. 22:6; ISSN ESTHA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Polychlorinated dibenzodioxins and dibenzofurans in sediments from Siskiwit Lake, Isle Royale
Occurrence and bioaccumulation of organochlorine compounds in fishes from Siskiwit Lake, Isle Royale, Lake Superior. [Salvelinus namaycush namaycush; Coregonus culpeaformis neohantoniensus]
Related Subjects
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR-WATER INTERACTIONS
AROMATICS
ATMOSPHERIC PRECIPITATIONS
CHLORINATED AROMATIC HYDROCARBONS
DEPOSITION
ENVIRONMENTAL TRANSPORT
EVAPORATION
GREAT LAKES
HALOGENATED AROMATIC HYDROCARBONS
LAKE SUPERIOR
LAKES
MASS TRANSFER
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHASE TRANSFORMATIONS
POLLUTION
PRECIPITATION SCAVENGING
RAIN
SEASONAL VARIATIONS
SEDIMENTS
SEPARATION PROCESSES
SNOW
SURFACE WATERS
VARIATIONS
WATER POLLUTION