Determination of dry deposition velocity of polycyclic aromatic hydrocarbons under the sub-tropical climate and its implication for regional cycling

Dotel, Jagdish; Gong, Ping; Wang, Xiaoping; Pokhrel, Balram; Wang, Chuanfei; Nawab, Javed

doi:10.1016/j.envpol.2020.114143

Cited by 9 publications

(4 citation statements)

References 66 publications

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“…This trend is consistent with several observations from previous PAH-oriented studies [ 11 , 22 ]. In Gdynia, deposition fluxes of PAHs were similar to the values registered in Kathmandu, Nepal (281 ng m −2 day −1 for Σ 15 PAHs) [ 23 ] and Mottola, Italy (211 ng m −2 day −1 for Σ 7 PAHs) [ 15 ]. However, the annual mean PAH deposition flux in this study was much lower than values observed in other urban and industrial areas of Europe [ 15 ] and Asia [ 17 ].…”

Section: Resultssupporting

confidence: 63%

Atmospheric Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) in the Coastal Urban Environment of Poland: Sources and Transport Patterns

Siudek

2022

IJERPH

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This study combines an interseasonal variation of deposition profiles of fine-particulate-bound polycyclic aromatic hydrocarbons (PM2.5-bound PAHs) with source apportionment analysis. Comprehensive measurements were conducted in four representative periods of 2019 in the coastal urban region of the Baltic Sea in Poland. The mean daily deposition flux of Σ13PAHs was 229 ng m−2 day−1, which was lower than in other urban/industrial sites of Europe and Asia. The seasonal PAHs distribution exhibited a clear U-shaped pattern, reaching maximum values in January and December and the minimum in June. A strong influence of local/regional anthropogenic emissions and meteorological factors (precipitation, ambient temperature, wind regimes) was observed. The contribution of medium molecular weight PAHs (fluoranthene, pyrene, benzo(a)anthracene, chrysene) to the total sum of PAHs deposition fluxes increased from 24% in spring to 38% in summer, as a result of photochemistry, urban traffic, and shipping emissions. The highest contribution of 5- and 6-ring PAHs occurred primarily in autumn (55%), followed by winter (39%), spring (35%), and summer (26%). Benzo(a)pyrene (human carcinogenic compound) had a relatively high deposition flux in winter, which was almost 14 and 20 times higher than the values registered in spring and summer, respectively. The FLEXTRA dispersion model was used to study potential pollution regions for PM2.5-bound PAHs and to investigate changes in the PAH deposition regime in different seasons. This study reveals that the winter contribution of PAHs was mostly impacted by local urban activities (i.e., residential heating and coal-fired power plants). Winter PAH deposition fluxes were particularly associated with atmospheric particles transported from surrounding areas and industrially impacted regions of SE–S–SW Poland and Europe.

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Section: Resultssupporting

confidence: 63%

Atmospheric Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) in the Coastal Urban Environment of Poland: Sources and Transport Patterns

Siudek

2022

IJERPH

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“…However, this open design also results in less wind sheltering than in the double bowl housing, which should make the SR of the PAS-DD even more dependent on variations in wind speed than those of the PUF-PAS. The PAS-DD has been used in combination with the PUF-PAS to determine dry deposition uxes and velocities of PAHs in two Nepalese cities 159 and to study the dry deposition of pesticides. 160 A number of modied versions of the original PUF-PAS 24 have been presented specically for use indoors.…”

Section: D23 Samplers Based On Polydimethyl Siloxane (Pdms)mentioning

confidence: 99%

Passive air sampling for semi-volatile organic chemicals

Wania

Shunthirasingham

2020

Environ. Sci.: Processes Impacts

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“…Chemical-air equivalency models can be used to determine ambient PAH concentrations in the air. However, ambient temperature, humidity, and air flow in the post-fire scene may affect the deposition, aerosolization, and partitioning of PAHs ( Dotel et al, 2020 ; Newman et al, 2011 ). The models used in the present study were validated for 25 °C and 50% relative humidity, but specific temperature, humidity, and ventilation parameters were not recorded for post-fire scene investigations, and may have been substantially different.…”

Section: Discussionmentioning

confidence: 99%

Characterization of fire investigators’ polyaromatic hydrocarbon exposures using silicone wristbands

Bakali,

Baum,

Louzado-Feliciano

et al. 2024

Ecotoxicology and Environmental Safety

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Determination of dry deposition velocity of polycyclic aromatic hydrocarbons under the sub-tropical climate and its implication for regional cycling

Cited by 9 publications

References 66 publications

Atmospheric Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) in the Coastal Urban Environment of Poland: Sources and Transport Patterns

Atmospheric Deposition of Polycyclic Aromatic Hydrocarbons (PAHs) in the Coastal Urban Environment of Poland: Sources and Transport Patterns

Passive air sampling for semi-volatile organic chemicals

Characterization of fire investigators’ polyaromatic hydrocarbon exposures using silicone wristbands

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