Polycyclic aromatic hydrocarbons in air on small spatial and temporal scales – II. Mass size distributions and gas-particle partitioning

Lammel, Gerhard; Klánová, Jana; Ilić, Predrag; Kohoutek, Jiří; Gasic, Bojan; Kovacić, Igor; Škrdlíková, Lenka

doi:10.1016/j.atmosenv.2010.08.001

Cited by 44 publications

(31 citation statements)

References 24 publications

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“…Similar to our study, Harada et al (2006) observed PFOS related to mid-size particles, however, the maximum PFOS mass fractions appears to be shifted to coarser particle sizes of roughly 2.5-5 lm (also note the different cut-off diameters in both studies). In contrast to PFOS, maximum mass fractions for other legacy persistent organic pollutants (POPs) such as polychlorinated dibenzo dioxins and -furans, polycyclic aromatic hydrocarbons, organochlorine pesticides or brominated diphenyl ethers were usually observed in particles smaller than 1.3 lm (Kaupp and McLachlan, 2000;Oh et al, 2002;Chrysikou et al, 2009;Lammel et al, 2010;Zhang et al, 2012).…”

Section: Pfas Particle-size Distributionmentioning

confidence: 93%

Particle-size distribution of airborne poly- and perfluorinated alkyl substances

et al. 2015

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Section: Pfas Particle-size Distributionmentioning

confidence: 93%

Particle-size distribution of airborne poly- and perfluorinated alkyl substances

et al. 2015

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“…where Cip and Cig are the concentration of the i-th compound in the particulate (p) and in the gaseous (g) phase, respectively, and TSP is the concentration of the total suspended particulate [84,85]. The phase partitioning may also be described by the fraction θ of a compound in the particulate phase:…”

Section: Pahs Gas/particle Partitioningmentioning

confidence: 99%

Chemical Composition of Aerosol over the Arctic Ocean from Summer ARctic EXpedition (AREX) 2011–2012 Cruises: Ions, Amines, Elemental Carbon, Organic Matter, Polycyclic Aromatic Hydrocarbons, n-Alkanes, Metals, and Rare Earth Elements

et al. 2019

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During the summers of 2011 and 2012, two scientific cruises were carried out over the Arctic Ocean aiming at the determination of the aerosol chemical composition in this pristine environment. First, mass spectrometry was applied to study the concentration and gas/particle partitioning of polycyclic aromatic hydrocarbons (PAHs) and n-alkanes. Experimental and modelled data of phase partitioning were compared: results demonstrated an equilibrium between gas and particle phase for PAHs, while n-alkanes showed a particle-oriented partitioning, due to the local marine origin of them, confirmed by the extremely low value of their carbon preference index. Moreover, the inorganic and organic ions (carboxylic acids and amines) concentrations, together with those of elemental carbon (EC) and organic matter (OM), were analyzed: 63% of aerosol was composed of ionic compounds (>90% from sea-salt) and the OM content was very high (30.5%; close to 29.0% of Cl − ) in agreement with n-alkanes' marine signature. Furthermore, the amines' (dimethylamine, trimethylamine, diethylamine) concentrations were 3.98 ± 1.21, 1.70 ± 0.82, and 1.06 ± 0.56 p.p.t.v., respectively, fully in keeping with concentration values used in the CLOUD (Cosmics Leaving OUtdoor Droplet)-chamber experiments to simulate the ambient nucleation rate in a H 2 SO 4 -DMA-H 2 O system, showing the amines' importance in polar regions to promote new particle formation. Finally, high resolution mass spectrometry was applied to determine trace elements, including Rare Earth Elements (REEs), highlighting the dominant natural versus anthropic inputs for trace metals (e.g., Fe, Mn, Ti vs. As, Cd, Ni) and possible signatures of such anthropic activity.

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“…S2 in the Supplement). θ is thought to be strongly influenced by temperature, and doubling per 13 K cooling was found in a Mediterranean environment (Lammel et al, 2010b) apart from PM composition. We refrain from an exploration of the vapour pressure (p 0 L ) dependence of θ (or K p ): a low time resolution implies lack of representativeness of the temperature measurement for the phase change (Pankow and Bidleman, 1992).…”

Section: Gas-particle Partitioningmentioning

confidence: 99%

Air–sea exchange and gas–particle partitioning of polycyclic aromatic hydrocarbons in the Mediterranean

et al. 2014

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Polycyclic aromatic hydrocarbon (PAH) concentration in air of the central and eastern Mediterranean in summer 2010 was 1.45 (0.30-3.25) ng m −3 (sum of 25 PAHs), with 8 (1-17) % in the particulate phase, almost exclusively associated with particles < 0.25 µm. The total deposition flux of particulate PAHs was 0.3-0.5 µ g m −2 yr −1 . The diffusive air-sea exchange fluxes of fluoranthene and pyrene were mostly found net-depositional or close to phase equilibrium, while retene was net-volatilisational in a large sea region. Regional fire activity records in combination with box model simulations suggest that seasonal depositional input of retene from biomass burning into the surface waters during summer is followed by an annual reversal of air-sea exchange, while interannual variability is dominated by the variability of the fire season. One-third of primary retene sources to the sea region in the period 2005-2010 returned to the atmosphere as secondary emissions from surface seawaters. It is concluded that future negative emission trends or interannual variability of regional sources may trigger the sea to become a secondary PAH source through reversal of diffusive air-sea exchange.Capsule: In late summer the seawater surface in the Mediterranean has turned into a temporary secondary source of PAH, obviously related to biomass burning in the region.Published by Copernicus Publications on behalf of the European Geosciences Union.

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Polycyclic aromatic hydrocarbons in air on small spatial and temporal scales – II. Mass size distributions and gas-particle partitioning

Cited by 44 publications

References 24 publications

Particle-size distribution of airborne poly- and perfluorinated alkyl substances

Particle-size distribution of airborne poly- and perfluorinated alkyl substances

Chemical Composition of Aerosol over the Arctic Ocean from Summer ARctic EXpedition (AREX) 2011–2012 Cruises: Ions, Amines, Elemental Carbon, Organic Matter, Polycyclic Aromatic Hydrocarbons, n-Alkanes, Metals, and Rare Earth Elements

Air–sea exchange and gas–particle partitioning of polycyclic aromatic hydrocarbons in the Mediterranean

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