Pollution Level and Source Analysis of Polybrominated Diphenyl  Ethers(PBDEs)from Atmospheric Matter PM2.5 in Beijing

Abstract

Abstract:

In January, September and October,2008, 9 PM_2.5 samples were collected concurrently at 5 contrasting sites. The mass concentrations of 14 Polybrominated Diphenyl Ethers (PBDEs) congeners were detected with isotope dilution and high resolution gas chromatography/high resolution mass spectrometry (HRGS/HRMS) based on US EPA-1614 method. The pollution level, spatial distribution and source of 14 PBDEs atmospheric matterPM_2.5 in Beijing were analyzed. The results show that the mass concentrations of PBDEs are in the range of 2.82~57.94 pg/m3 with mean value of 15.67 pg/m³, and the mass concentration of BDE-209 is in the range of 0.34~7.32 pg/m³. The mass concentration of PBDEs in PM_2.5 in winter is higher than that in autumn. Monomer distribution of PBDEs in PM_2.5 samples is different, and the mass concentrations of penta-BDE and hexa-BDE are higher than those of tetra-BDE and tri-BDE. The PBDEs pollution are generally from traffic, industrial fuel and fire retardant, the contribution to PBDEs pollution is fire retardant, industrial fuel and traffic in descending order.

Key words: PM_2.5 , polybrominated diphenyl ethers (PBDEs), monomer distribution, source analysis

CLC Number:

X513

YANG Xue, LIU Da-Meng, SUN Jun-Ling. Pollution Level and Source Analysis of Polybrominated Diphenyl Ethers(PBDEs)from Atmospheric Matter PM_2.5 in Beijing[J]. Geoscience, 2010, 24(2): 355-361.

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Pollution Level and Source Analysis of Polybrominated Diphenyl Ethers(PBDEs)from Atmospheric Matter PM_2.5 in Beijing

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