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- W2139764411 abstract "Abstract Concentrations of particulate matter with an aerodynamic diameter less than 10 μm (PM 10 ) and PM with an aerodynamic diameter less than 2.5 μm (PM 2.5 ), and 16 polycyclic aromatic hydrocarbons (PAHs) were measured. The average concentrations of PM 10 and PM 2.5 reached 209.75 μg/m 3 and 141.87 μg/m 3 , respectively, and those of ΣPAHs were 41.46 ng/m 3 for PM 10 and 36.77 ng/m 3 for PM 2.5 . The mass ratio concentrations were 219.23 μg/g and 311.01 μg/g in PM 10 and PM 2.5 , respectively. Three sources and their contributions for PAHs were obtained. For individual input mode, diesel exhaust contributed 46.77% (PM 10 ) and 41.12% (PM 2.5 ) for mass concentration and 48.69% (PM 10 ) and 39.47% (PM 2.5 ) for mass ratio concentration; gasoline exhaust contributed 31.02% (PM 10 ) and 39.47% (PM 2.5 ) for mass concentration and 28.95% (PM 10 ) and 36.46% (PM 2.5 ) for mass ratio concentration; and coal combustion contributed 22.22% (PM 10 ) and 19.41% (PM 2.5 ) for mass concentration and 22.36% (PM 10 ) and 15.89% (PM 2.5 ) for mass ratio concentration. For combined input mode, the same source categories were obtained. Source contributions to PM 10 and PM 2.5 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" @default.
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- W2139764411 date "2015-02-02" @default.
- W2139764411 modified "2023-10-16" @default.
- W2139764411 title "Further insights into the composition, source, and toxicity of PAHs in size-resolved particulate matter in a megacity in China" @default.
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- W2139764411 doi "https://doi.org/10.1002/etc.2809" @default.
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