Size Distributions of Polycyclic Aromatic Hydrocarbons—gas/Particle Partitioning to Urban Aerosols

Venkataraman, Chandra; Thomas, Salimol; Kulkarni, Pramod

doi:10.1016/s0021-8502(98)00761-7

Cited by 128 publications

(93 citation statements)

References 34 publications

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“…On the other hand, volatile PAHs (3 rings) tend to distribute not only in the (fine) aerosol particles, but also in (coarse) runoff particles (Hoffman et al, 1984;Lee et al, 2005;Takada et al, 1990;Venkataraman et al, 1999). Consistently, Simpson et al (1998) and Oen et al, (2006) pointed out that less volatile PAHs tend to be enriched in fine particles while volatile PAHs tend to distribute in coarse particles in coastal sediment.…”

Section: Seasonal Variation Mechanisms Of the Fluxes Of Pahsmentioning

confidence: 70%

“…Hydrocarbons (PAHs) in Lake Biwa, Japan Although PAHs occur naturally, high levels of them are emitted by combustion process by cars, trucks, wood burning, coal fired plant, and waste incinerators in both gas and aerosol phase (Khalili et al, 1995;Venkataraman et al, 1999;Yamasaki et al, 1982). PAHs are also concentrated in petroleum, lubricants and crank case oil (Kimbrough and Dickhut, 2006), and leakage of them results in PAHs contamination in the environment.…”

Section: Seasonal Deposition Fluxes Of Polycyclic Aromaticmentioning

confidence: 99%

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Seasonal Deposition Fluxes of Polycyclic Aromatic Hydrocarbons (PAHs) in Lake Biwa, Japan

Tamamura

Satō

Ota

et al. 2008

Water Air Soil Pollut

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Section: Seasonal Variation Mechanisms Of the Fluxes Of Pahsmentioning

confidence: 70%

Section: Seasonal Deposition Fluxes Of Polycyclic Aromaticmentioning

confidence: 99%

Seasonal Deposition Fluxes of Polycyclic Aromatic Hydrocarbons (PAHs) in Lake Biwa, Japan

Tamamura

Satō

Ota

et al. 2008

Water Air Soil Pollut

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“…HPLC/UV detection was performed following methods previously used for the detection of PAHs in environmental samples (Venkataraman et al, 1999;Oanh et al, 2000;Dionex, 2003) with appropriate modifications. A portion of the extract (25 µL) was injected into a UPS C-18 reversed phase column (5 μm, 4.6-mm diameter, 250-mm length) with guard column.…”

Section: High Performance Liquid Chromatography (Hplc) Analysismentioning

confidence: 99%

Effects of Moisture Content and Burning Period on Concentration of Smoke Particles and Particle-Bound Polycyclic Aromatic Hydrocarbons from Rubber-Wood Combustion

Chomanee

Tekasakul

et al. 2009

Aerosol Air Qual. Res.

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Physical and chemical characteristics of particles from rubber-wood combustion in a natural rubber sheet smoking process were studied. Experimental parameters include wood moisture content and wood-burning period. The size distribution of smoke particles was measured by using an 8-stage Andersen air sampler. Total smoke particle concentration was determined by collecting particles using a modified high volume sampler. Polycyclic Aromatic Hydrocarbons (PAHs) were extracted with Benzene-Ethanol by using ultrasonic technique and analyzed by HPLC/UV detection. Results show that the size distribution of smoke particles is single-mode in which the mass median aerodynamic diameter (MMAD) is 0.68 μm and the average smoke concentration is 15.806 mg/m 3 . This is equivalent to a mass emission to workplace of 4.33 kg/month/room. The smoke particle concentration and associated PAH concentration clearly depend on the wood moisture content and burning period. The highest PAH concentration and smoke particle concentrations were found to be 60.59 to 118.06 μg/m 3 and 23.35 to 47.54 mg/m 3 , respectively, for a wood moisture content of 37.4 to 73.6% d.b. (dry basis) at the initial period. Smoke particle-bound PAHs are dominated by 4-6 ring PAH compounds that contribute to more than 60% of the total PAHs.

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“…Another possible explanation for the larger particle size in winter than summer is that the droplet-mode PAHs in winter came from mixing (or absorption) of PAHs and other soluble pollutants after cloud processing. Venkataraman et al (1999) explained that droplet-mode particles are likely to contain more aerosol water than condensation-mode particles, and this could result in higher absorption of PAHs into droplet-mode particles. Venkataraman et al (1999) also suggested that the absorption into droplet mode for lower-MW PAH compounds, which have smaller octanol-water partitioning coefficients, were higher than that for higher-MW PAHs.…”

Section: Pah Size Distributionmentioning

confidence: 99%

“…Venkataraman et al (1999) explained that droplet-mode particles are likely to contain more aerosol water than condensation-mode particles, and this could result in higher absorption of PAHs into droplet-mode particles. Venkataraman et al (1999) also suggested that the absorption into droplet mode for lower-MW PAH compounds, which have smaller octanol-water partitioning coefficients, were higher than that for higher-MW PAHs. However, this MW dependency was not shown in this study as shown in Fig.…”

Section: Pah Size Distributionmentioning

confidence: 99%

Seasonal variation of particle size distributions of PAHs at Seoul, Korea

Lee

Shin

Bae

et al. 2008

Air Qual Atmos Health

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The atmospheric size distributions of particulate polycyclic aromatic hydrocarbons (PAHs) up to 10 μm in diameter were measured at Seoul in the summer and winter of 2003. The concentrations of total PAHs were from 4.32 to 5.48 ng m −3 in summer and from 25.6 to 35.9 ng m −3 in winter, respectively. Majority of the PAHs concentrations were found on fine particles (D p <2.1 μm). The size distributions of individual PAH compounds were bimodal with the peaks in the 0.43-0.65-and 4.7-5.8-μm range in summer. In winter, those were unimodal or weakly bimodal with the peaks in the 0.65-1.1-and 4.7-5.8-μm range. The seasonal variation of the peak size range in the fine mode might be caused by longer residence time in the air in winter. Based on the previously reported source diagnostic ratios of PAHs for the major emission sources, it was suggested that vehicles were the major source of PAH in summer, while coal-related emissions and firewood fire were the major sources in winter for fine particles. The seasonal variation of the peak size ranges in the fine particles had not shown noticeable effect on the dry deposition fluxes. However, it might affect the optical properties of the atmosphere.

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Size Distributions of Polycyclic Aromatic Hydrocarbons—gas/Particle Partitioning to Urban Aerosols

Cited by 128 publications

References 34 publications

Seasonal Deposition Fluxes of Polycyclic Aromatic Hydrocarbons (PAHs) in Lake Biwa, Japan

Seasonal Deposition Fluxes of Polycyclic Aromatic Hydrocarbons (PAHs) in Lake Biwa, Japan

Effects of Moisture Content and Burning Period on Concentration of Smoke Particles and Particle-Bound Polycyclic Aromatic Hydrocarbons from Rubber-Wood Combustion

Seasonal variation of particle size distributions of PAHs at Seoul, Korea

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