Field estimates of polyurethane foam – air partition coefficients for hexachlorobenzene, alpha-hexachlorocyclohexane and bromoanisoles

Atmospheric Transport and Deposition of Bromoanisoles Along a Temperate to Arctic Gradient

“…The high air volumes sampled at Råö and Pallas resulted in extensive breakthrough of BAs from the PUF trap in many cases. We calculated the breakthrough volume ( V B , m 3 ) at the mean temperature of each sampling event from the PUF/air partition coefficients ( K PA , m 3 g –1 = C PUF / C A ) of 2,4-DiBA and 2,4,6-TriBA and the dimensions and density of the PUF trap. According to frontal chromatography theory, V B is the air volume at which the concentration of analyte in the trap effluent is 50% of the inlet concentration.…”

“…BAs volatilize from surface seawater , and are found in air over temperate and tropical oceans, ,− the Arctic Ocean, coastal Norway, ,, and the northern Baltic Sea. ,,, Limited information is available concerning migration of BAs away from open ocean and coastal areas. We have, however, found BAs at a site 60 km from northern Baltic where they may have originated or been carried from the North Atlantic across Norway and Sweden .…”

Sampling efficiency of a polyurethane foam air sampler: Effect of temperature

“…Given the substantial temperature differentials between polar and non-polar regions, it is important to study the effect of temperature on the sampling of POPs. So far, few studies have been carried out to quantify the impact of temperature on the breakthrough behavior of adsorption columns [ 30 , 33 ].…”

Toxicidade equivalente da atmosfera por dioxinas, furanos e bifenilas policloradas,com uso de duas técnicas de coleta, passiva e ativa

“…Basicamente, a acumulação de massa no disco de PUF ocorre pela transferência de massa através da interface PUF-ar. O coeficiente de transferência de massa (k) total é determinado por coeficientes de massa individuais (SHOEIB e HARNER, 2002): (BIDLEMAN et al, 2016;PARNIS et al, 2016; e métodos computacionais têm sido empregados (STENZEL et al, 2014;PARNIS et al, 2015;ABDOLLAHI et al, 2017).…”