PCB transport into lake sediments. Conceptual model and laboratory simulation

The transport of Aroclor 1242 in lake bottom sediments was simulated in the laboratory. Radiolabelled Aroclor 1242 was added to a simulated water/sediment system. Sampling and analytical methods were devised to determine PCB concentration profiles with depth. Sample cores were divided into sediment/...

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Bibliographic Details
Published in:Environmental science & technology 1988-12, Vol.22 (12), p.1435-1440
Main Authors: Formica, Sandi J, Baron, Julie A, Thibodeaux, Louis J, Valsaraj, Kalliat T
Format: Article
Language:English
Subjects:
520101 - Environment, Aquatic- Basic Studies- Radiometric Techniques- (-1989)
520200 - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989)
Applied sciences
AROMATICS
Biological and physicochemical properties of pollutants. Interaction in the soil
CARBON 14 COMPOUNDS
CHLORINATED AROMATIC HYDROCARBONS
CONTAMINATION
ENVIRONMENTAL SCIENCES
ENVIRONMENTAL TRANSPORT
Exact sciences and technology
Freshwater
HALOGENATED AROMATIC HYDROCARBONS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LAKES
MASS TRANSFER
MATHEMATICAL MODELS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION
SEDIMENTS
SIMULATION
Soil and sediments pollution
SURFACE WATERS
TRACER TECHNIQUES
WATER POLLUTION
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Description
Summary:The transport of Aroclor 1242 in lake bottom sediments was simulated in the laboratory. Radiolabelled Aroclor 1242 was added to a simulated water/sediment system. Sampling and analytical methods were devised to determine PCB concentration profiles with depth. Sample cores were divided into sediment/water slices of 0.02-0.1 cm and examined by scintillation counting. A mathematical model describing PCB fate as a combination of molecular diffusion in pore water and partitioning on to sediment solids was thought to describe Aroclor 1242 transport in sediment adequately.
ISSN:0013-936X
1520-5851
DOI:10.1021/es00177a008