Diurnal Variations of Air-Soil Exchange of Semivolatile Organic Compounds (PAHs, PCBs, OCPs, and PBDEs) in a Central European Receptor Area
Language English Country United States Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Atmosphere MeSH
- Chlorobenzenes analysis MeSH
- Hydrocarbons, Chlorinated analysis MeSH
- Hexachlorocyclohexane analysis MeSH
- Soil Pollutants analysis MeSH
- Air Pollutants analysis MeSH
- Environmental Monitoring MeSH
- Pesticides analysis MeSH
- Polychlorinated Biphenyls analysis MeSH
- Polycyclic Aromatic Hydrocarbons analysis MeSH
- Soil chemistry MeSH
- Volatile Organic Compounds analysis MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Hungary MeSH
- Names of Substances
- Chlorobenzenes MeSH
- Hydrocarbons, Chlorinated MeSH
- Hexachlorocyclohexane MeSH
- Soil Pollutants MeSH
- Air Pollutants MeSH
- pentachlorobenzene MeSH Browser
- Pesticides MeSH
- Polychlorinated Biphenyls MeSH
- Polycyclic Aromatic Hydrocarbons MeSH
- Soil MeSH
- Volatile Organic Compounds MeSH
Concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), and polybrominated diphenyl ethers (PBDEs) in air and soil, their fugacities, and the experimental soil-air partitioning coefficient (KSA) were determined at two background sites in the Gt. Hungarian Plain in August 2013. The concentrations of the semivolatile organic compounds (SOCs) in the soil were not correlated with the organic carbon content but with two indirect parameters of mineralization and aromaticity, suggesting that soil organic matter quality is an important parameter affecting the sorption of SOCs onto soils. Predictions based on the assumption that absorption is the dominant process were in good agreement with the measurements for PAHs, OCPs, and the low chlorinated PCBs. In general, soils were found to be a source of PAHs, high chlorinated PCBs, the majority of OCPs and PBDEs, and a sink for the low chlorinated PCBs and γ-hexachlorocyclohexane. Diurnal variations in the direction of the soil-air exchange were found for two compounds (i.e., pentachlorobenzene and p,p'-dichlorodiphenyldichloroethane), with volatilization during the day and deposition in the night. The concentrations of most SOCs in the near-ground atmosphere were dominated by revolatilization from the soil.
Institute for Environmental Sciences University of Koblenz Landau Fortstrasse 7 76829 Landau Germany
References provided by Crossref.org
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