PMID- 19544859 OWN - NLM STAT- MEDLINE DCOM- 20090720 LR - 20190715 IS - 0013-936X (Print) IS - 0013-936X (Linking) VI - 43 IP - 10 DP - 2009 May 15 TI - Soil burdens of persistent organic pollutants: their levels, fate, and risks. Part iv. Quantification of volatilization fluxes of organochlorine pesticides and polychlorinated biphenyls from contaminated soil surfaces. PG - 3588-95 AB - A volatilization chamber, designed for direct measurements of the soil-air exchange of persistent organic pollutants (POPs) was applied for determination of the volatilization fluxes of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs). The volatilization fluxes were determined for 13 model compounds at 3-5 concentration levels, for two soil organic carbon contents, and two wind velocities. The flux values were strongly correlated with physicochemical properties of the compounds. The higher fluxes were measured for soils with lower organic carbon contents, for higher contamination, and higher wind velocities. Experimentally derived values were compared to those predicted by the fugacity model. In general, the fugacity model underestimated the volatilization fluxes, especially for the compounds with higher molecular weights, and soils with higher organic carbon contents. It has been demonstrated that variability of the wind velocities as an important parameter for quantification of the soil-air exchange should be better considered in current models. Presented results draw the attention to often overlooked secondary sources of the atmospheric pollution and point out that their impact can be much greater than indicated by the fugacity models. FAU - Koblizkova, Martina AU - Koblizkova M AD - RECETOX, Research Centre for Environmental Chemistry and Ecotoxicology, Faculty of Science, Masaryk University, Kamenice 3/126, 625 00 Brno, Czech Republic. FAU - Ruzickova, Petra AU - Ruzickova P FAU - Cupr, Pavel AU - Cupr P FAU - Komprda, Jiri AU - Komprda J FAU - Holoubek, Ivan AU - Holoubek I FAU - Klanova, Jana AU - Klanova J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Pesticides) RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Models, Chemical MH - Pesticides/*analysis MH - Polychlorinated Biphenyls/*analysis MH - Risk Factors MH - Soil/*analysis MH - Soil Pollutants/*analysis MH - Temperature MH - Time Factors MH - Volatilization EDAT- 2009/06/24 09:00 MHDA- 2009/07/21 09:00 CRDT- 2009/06/24 09:00 PHST- 2009/06/24 09:00 [entrez] PHST- 2009/06/24 09:00 [pubmed] PHST- 2009/07/21 09:00 [medline] AID - 10.1021/es9003944 [doi] PST - ppublish SO - Environ Sci Technol. 2009 May 15;43(10):3588-95. doi: 10.1021/es9003944.