Environmental Pollution 166

Release of native and mass labelled PCDD/PCDF from soil heated to simulate bushfires

Pages 10-16
Robert R. Black, Carl P. Meyer, Alan Yates, Lukas Van Zwieten, Brock G. Chittim, Caroline Gaus, Jochen F. Mueller

• We fortified soil with mass labelled PCDD/PCDF.
• We heated the soil in a furnace and measured emissions of PCDD/PCDF.
• We found mass labelled and native PCDD/PCDF in the air stream.Formation of some native congeners occurred probably due to dechlorination of Cl8DD.
• We conclude that soil emits PCDD/PCDF when heated to temperatures found in bushfires.

Polycyclic aromatic hydrocarbons (PAHs) in the Mediterranean Sea: Atmospheric occurrence, deposition and decoupling with settling fluxes in the water column

Pages 40-47
Javier Castro-Jiménez, Naiara Berrojalbiz, Jan Wollgast, Jordi Dachs

• First comprehensive assessment of atmospheric PAH levels and deposition across the Mediterranean Sea.
• PAH atmospheric concentrations are highly variable across the Mediterranean Sea.
• Mediterranean Sea open waters receive ∼3100 ton of PAHs each year from the atmosphere.
• Important depletion of low MW PAH water column concentrations in the photic zone.
• Degradation processes most likely responsible of the atmospheric deposition – settling fluxes decoupling.

Levels and distribution of dissolved hydrophobic organic contaminants in the Morava river in Zlín district, Czech Republic as derived from their accumulation in silicone rubber passive samplers

Pages 157-166
Roman Prokeš, Branislav Vrana, Jana Klánová

• Annual dynamics of waterborne hydrophobic organic compounds was assessed in a model industrial region.
• Dissolved concentrations of contaminants in water column were measured using passive samplers.
• The small spatial and temporal contaminant variability is related to diffusive pollution sources.
• Seasonality of aqueous concentrations of volatile PAHs reflects the atmospheric deposition.

Application of XAD-resin based passive air samplers to assess local (roadside) and regional patterns of persistent organic pollutants

Pages 218-225
Paul Barthel, Sabine Thuens, Chubashini Shunthirasingham, John N. Westgate, Frank Wania, Michael Radke

• Resin-based passive air samplers are used to measure air concentration of POPs.
• A 400 km transect along an industrial–rural–urban gradient is analyzed.
• Air concentrations are in good agreement with calculated proximity to source.
• Expanded uncertainty for PAH analysis complies to regulatory threshold value.
• PCB distribution shows fractionation along the transect.

2.5.2012

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