PMID- 19924953 OWN - NLM STAT- MEDLINE DCOM- 20091217 LR - 20171116 IS - 0013-936X (Print) IS - 0013-936X (Linking) VI - 43 IP - 21 DP - 2009 Nov 1 TI - Development of a soil fugacity sampler for determination of air-soil partitioning of persistent organic pollutants under field controlled conditions. PG - 8257-63 LID - 10.1021/es9020525 [doi] AB - Soils are the main reservoir of persistent organic pollutants (POPs) and thus air-soil exchange and partitioning are key processes controlling the fate and transport of POPs at regional and global scales. To date, soil fugacity has been estimated from models of the soil-air partition coefficients, with the associated unavoidable uncertainties; or by experimental procedures in the laboratory with uncertain application in field conditions. The development of an operational soil fugacity sampler is presented here; one which ensures optimal field data of the POP fugacity in soil and environmentally relevant surface (soil+grass, etc.) and therefore ensuring accurate soil-air partition coefficients and surface-air fugacity gradients. The sampler flow rate is optimized, sampler reproducibility is assessed, and equilibrium between the gas and soil concentrations of polychlorinated biphenyls and polycyclic aromatic hydrocarbons is demonstrated. The development and comprehensive validation of a soil fugacity sampler opens the door for the first time to field studies that accurately determine the variables driving the soil-air partitioning and fluxes of POPs. FAU - Cabrerizo, Ana AU - Cabrerizo A AD - Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona 08034, Catalunya, Spain. FAU - Dachs, Jordi AU - Dachs J FAU - Barcelo, Damia AU - Barcelo D 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 (Gases) RN - 0 (Organic Chemicals) RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Air/*analysis MH - Environmental Restoration and Remediation/*instrumentation/*methods MH - Gases/analysis MH - Organic Chemicals/*analysis MH - Polychlorinated Biphenyls/analysis MH - Polycyclic Aromatic Hydrocarbons/analysis MH - Reproducibility of Results MH - Rivers/chemistry MH - Soil/*analysis MH - Soil Pollutants/*analysis MH - Surface Properties MH - Temperature EDAT- 2009/11/21 06:00 MHDA- 2009/12/18 06:00 CRDT- 2009/11/21 06:00 PHST- 2009/11/21 06:00 [entrez] PHST- 2009/11/21 06:00 [pubmed] PHST- 2009/12/18 06:00 [medline] AID - 10.1021/es9020525 [doi] PST - ppublish SO - Environ Sci Technol. 2009 Nov 1;43(21):8257-63. doi: 10.1021/es9020525.