Model of the long-term exchange of PCBs between soil and the atmosphere in the Southern U.K
Article Abstract:
Analysis of the concentrations of polychlorinated biphenyls (PCB) in the air, soil and vegetation in the UK from 1942-1992 shows that levels of PBC emissions have decreased significantly since it reached its peak in the 1960s. During this time, PCB contamination were maintained at very low levels because of its active degradation or 'degassing,' reducing its half-life to 10-20 years. A simple model to represent the heteregeneous interaction between air and soil has been developed to provide insights on how the soil acts as a buffer to reduce the spread of harmful atmospheric pollutants.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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PCB and PAH dynamics in a small rural lake
Article Abstract:
Deposition of polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in a small rural lake were investigated by measuring the concentrations of PCBs and PAHs in lake sediments. High concentrations of PAHs were detected in sediments collected from the same location, suggesting the absence of recycling in the sediments. In contrast, there were significantly high depositional fluxes for phenanthrene and PCBs, suggesting recycling between the sediments and waters. The deposition of PAHS was influenced by the seasons, with high fluxes in the winter.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Changes in the PCB concentration of United Kingdom air between 1972 and 1992
Article Abstract:
Archived air filter samples from selected locations in the UK were analyzed for the presence of polychlorinated biphenyls (PCB) to provide a picture of PCB concentration in the air for the period 1972-92. Results suggest that atmospheric PCB concentrations in rural areas of the UK have decreased since the period 1960-70, with the most significant decrease occurring during the 1970s. The rate of the decline, however, seem to be slowing down over the past few years.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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