Publication details

Diurnal Variations of Air-Soil Exchange of Semivolatile Organic Compounds (PAHs, PCBs, OCPs, and PBDEs) in a Central European Receptor Area

Authors

DEGRENDELE Celine AUDY Ondřej HOFMAN Jakub KUCERIK Jiří KUKUČKA Petr MULDER Marie Daniëlle PŘIBYLOVÁ Petra PROKEŠ Roman SÁŇKA Milan SCHAUMANN Gabriele E. LAMMEL Gerhard

Year of publication 2016
Type Article in Periodical
Magazine / Source ENVIRONMENTAL SCIENCE & TECHNOLOGY
MU Faculty or unit

Faculty of Science

Citation
Web http://pubs.acs.org/doi/abs/10.1021/acs.est.5b05671
Doi http://dx.doi.org/10.1021/acs.est.5b05671
Field Environment influence on health
Keywords POLYCYCLIC AROMATIC-HYDROCARBONS; POLYBROMINATED DIPHENYL ETHERS; CENTRAL TIBETAN PLATEAU; ORGANOCHLORINE PESTICIDES; POLYCHLORINATED-BIPHENYLS; PARTITION-COEFFICIENTS; SURFACE SOIL; BLACK CARBON; SPATIAL-DISTRIBUTION; ATMOSPHERIC CONCENTRATIONS
Description 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 (K-SA) 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 gamma-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.
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