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Further insights into the composition, source, and toxicity of PAHs in size-resolved particulate matter in a megacity in China
Environmental toxicology and chemistry, 2015-03, Vol.34 (3), p.480-487
Shi, Guo-Liang
Zhou, Xiao-Yu
Jiang, Su-Yang
Tian, Ying-Ze
Liu, Gui-Rong
Feng, Yin-Chang
Chen, Gang
Liang, Yang-Ke-Xin
2015
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Shi, Guo-Liang
Zhou, Xiao-Yu
Jiang, Su-Yang
Tian, Ying-Ze
Liu, Gui-Rong
Feng, Yin-Chang
Chen, Gang
Liang, Yang-Ke-Xin
Titel
Further insights into the composition, source, and toxicity of PAHs in size-resolved particulate matter in a megacity in China
Ist Teil von
Environmental toxicology and chemistry, 2015-03, Vol.34 (3), p.480-487
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2015
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
Concentrations of particulate matter with an aerodynamic diameter less than 10 μm (PM10) and PM with an aerodynamic diameter less than 2.5 μm (PM2.5), and 16 polycyclic aromatic hydrocarbons (PAHs) were measured. The average concentrations of PM10 and PM2.5 reached 209.75 μg/m3 and 141.87 μg/m3, respectively, and those of ΣPAHs were 41.46 ng/m3 for PM10 and 36.77 ng/m3 for PM2.5. The mass ratio concentrations were 219.23 μg/g and 311.01 μg/g in PM10 and PM2.5, respectively. Three sources and their contributions for PAHs were obtained. For individual input mode, diesel exhaust contributed 46.77% (PM10) and 41.12% (PM2.5) for mass concentration and 48.69% (PM10) and 39.47% (PM2.5) for mass ratio concentration; gasoline exhaust contributed 31.02% (PM10) and 39.47% (PM2.5) for mass concentration and 28.95% (PM10) and 36.46% (PM2.5) for mass ratio concentration; and coal combustion contributed 22.22% (PM10) and 19.41% (PM2.5) for mass concentration and 22.36% (PM10) and 15.89% (PM2.5) for mass ratio concentration. For combined input mode, the same source categories were obtained. Source contributions to PM10 and PM2.5 were diesel exhaust (40.70% and 36.64%, respectively, for mass concentration; 49.19% and 38.47%, respectively, for mass ratio concentration), gasoline exhaust (35.09% and 38.47%, respectively, for mass concentration; 32.50% and 33.43%, respectively, for mass ratio concentration), and coal combustion (24.21% and 24.89%, respectively, for mass concentration; 18.31% and18.17%, respectively, for mass ratio concentration). Source risk assessment showed that vehicle emission was a significant contributor. The findings can help elucidate sources of PAHs and provide evidence supporting further applications of the Unmix model and additional studies about PAHs. Environ Toxicol Chem 2015;34:480–487. © 2014 SETAC
Sprache
Englisch
Identifikatoren
ISSN: 0730-7268
eISSN: 1552-8618
DOI: 10.1002/etc.2809
Titel-ID: cdi_proquest_miscellaneous_1669880831
Format
–
Schlagworte
Air Pollutants - analysis
,
Air Pollutants - chemistry
,
Air Pollutants - toxicity
,
Airborne particulates
,
Atmosphere - chemistry
,
China
,
Cities
,
Coal
,
Combustion
,
Diesel
,
Diesel engines
,
Diesel fuels
,
Emission analysis
,
Environmental Monitoring
,
Exhaust
,
Exhaust gases
,
Gasoline
,
Input modes
,
Mass ratios
,
Megacities
,
PAHs
,
Particle Size
,
Particulate emissions
,
Particulate matter
,
Particulate Matter - analysis
,
Particulate Matter - chemistry
,
Particulates
,
Pollution sources
,
Polycyclic aromatic hydrocarbons
,
Polycyclic Aromatic Hydrocarbons - analysis
,
Polycyclic Aromatic Hydrocarbons - chemistry
,
Polycyclic Aromatic Hydrocarbons - toxicity
,
Risk assessment
,
Source
,
Toxic equivalency (TEQ)
,
Toxicity
,
Toxicology
,
Unmix
,
Vehicle emissions
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