Abstract:
:It is difficult to determine the deposition levels of gaseous polycyclic aromatic hydrocarbons (PAHs), as even atmospheric PAHs mainly exist in the gas phase. Gaseous PAH fluxes across the air-water interface were measured in Merinos, Bursa, Turkey. Direct gaseous fluxes of PAHs were measured intermittently for the period August 2004 through May 2005 when there was no precipitation. A modified water surface sampler (WSS), including a filter holder and an XAD-2 resin column, was employed to collect the flux samples. Average gaseous PAH flux into the WSS, determined by analyzing the XAD-2 resin column, was 31,068 +/- 16,035 ng m(-2) d(-1). This flux value was about 90% of the total (gaseous + particulate) PAH flux, which may indicate that gas exchange is a major removal mechanism for atmospheric PAHs in our sampling site. Variations in gas exchange fluxes likely resulted from changes in both meteorological conditions and concentrations whose level depends on many parameters including fuel characteristics and strength, combustion types, and their efficiencies. Vapor phase PAH fluxes were divided by ambient air concentrations measured with a high volume sampler to calculate overall gas phase PAH mass transfer coefficients (MTCs) (K(G)). The calculated average PAH MTC was 0.38 +/- 0.17 cm s(-1). The average MTC is comparable with ones calculated using a similar configuration of a WSS.
journal_name
Arch Environ Contam Toxicoljournal_title
Archives of environmental contamination and toxicologyauthors
Tasdemir Y,Esen Fdoi
10.1007/s00244-007-9096-zsubject
Has Abstractpub_date
2008-08-01 00:00:00pages
191-8issue
2eissn
0090-4341issn
1432-0703journal_volume
55pub_type
杂志文章abstract::Secondary effects of a single dose of the insecticide Dursban 4E (active ingredient chlorpyrifos) were studied in indoor experimental freshwater ecosystems intended to mimic drainage ditches. Two experiments were performed, one in which all model ecosystems were dominated by the macrophyte Elodea muttallii, and one us...
journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
doi:10.1007/BF00203801
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journal_title:Archives of environmental contamination and toxicology
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doi:10.1007/s00244-002-0267-7
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
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journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
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journal_title:Archives of environmental contamination and toxicology
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journal_title:Archives of environmental contamination and toxicology
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更新日期:2020-02-01 00:00:00
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journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
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更新日期:1998-07-01 00:00:00
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journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
doi:10.1007/s00244-016-0358-5
更新日期:2017-07-01 00:00:00
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journal_title:Archives of environmental contamination and toxicology
pub_type: 杂志文章
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更新日期:1997-08-01 00:00:00