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- W2378719576 abstract "Atmospheric PM_(10) samples in Changping of Beijing in the four seasons were collected from 2004～2006.The composition and concentrations of polycyclic aromatic hydrocarbons(PAHs) were analyzed with ultrasonic extraction-GC/MS method.The total concentrations of 18 PAHs in the past four seasons of three years ranged from 21.64～656.39,31.94～164.33 and 7.294～209.3ng/m~3 respectively.The total concentrations of carcinogenic Benzo(a)pyrene(BaP) ranged from 2.69～36.95,1.44～6.6 and 0.256～8.625ng/m~3 respectively.The trend of BaP had a negative correlation with the total contrations of PAHs.The concentrations of PAHs rank as winterautumn spring summer.The reson due to the strong sunniness bringing on the photolysis and cleanliness by rain in summer,while coal consumption was larger in winter than other seasons.It's suggested that the PAHs of atmospheric samples PM_(10) would be from the mixed source of coal combustion and vehicle exhaust by skeleton map and other sources has less contribution." @default.
- W2378719576 created "2016-06-24" @default.
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- W2378719576 date "2008-01-01" @default.
- W2378719576 modified "2023-09-27" @default.
- W2378719576 title "The Concentrations and Variation Trends of Polycyclic Aromatic Hydrocarbons in the Ambient PM_(10) in Changping of Beiing" @default.
- W2378719576 hasPublicationYear "2008" @default.
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