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Atmospheric BTEX and carbonyls during summer seasons of 2008–2010 in Beijing

Abstract : The atmospheric concentrations of carbonyls and BTEX (benzene, toluene, ethylbenzene, m,p-xylene and o-xylene) were measured simultaneously in summers of Beijing from year 2008 to 2010. The total concentrations of formaldehyde, acetaldehyde and acetone in the consecutive summers, which were 33.4 μg m−3, 36.7 μg m−3 and 48.6 μg m−3, respectively, were much lower than those reported in the summers of 2005 (58.4 μg m−3) and 2006 (77.4 μg m−3). The concentrations of BTEX in the summers were 16 μg m−3, 21.5 μg m−3 and 15.4 μg m−3, respectively. The maximal contributions of photochemical reactions to atmospheric formaldehyde and acetaldehyde in the summers were estimated to be around 47.6–60.3%. The average ozone formation potentials (OFPs) for carbonyls and BTEX as well as carbon monoxide in summer of Beijing were calculated as 166.1 μg m−3, 65.4 μg m−3 and 100.8 μg m−3, respectively.
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Submitted on : Thursday, September 3, 2015 - 11:06:06 AM
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Yujie Zhang, Yujing Mu, Peng Liang, Zhu Xu, Junfeng Liu, et al.. Atmospheric BTEX and carbonyls during summer seasons of 2008–2010 in Beijing. Atmospheric environment, Elsevier, 2012, 59, pp.186-191. ⟨10.1016/j.atmosenv.2012.06.030⟩. ⟨insu-01192641⟩



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