Oxidative Capacity of the PM 10 and PM 2.5 in Beijing During 2014 APEC

In order to evaluate the effect of the joint air pollution prevention and control program on the toxicity of the airborne particles in Beijing during the APEC conference, we collected the PM and PM (particulate matter with aerodynamic diameters of less than 10 μm and 2.5 μm respectively) from Octobe...

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Bibliographic Details
Published inHuanjing kexue Vol. 37; no. 10; p. 3708
Main Authors Guo, Qian, Shao, Long-Yi, Wang, Wen-Hua, Hou, Cong, Zhao, Cheng-Mei, Xing, Jiao-Ping, Ma, Shi-Min
Format Journal Article
LanguageChinese
Published China 08.10.2016
Subjects
exposure risk
APEC conference
PM2.5
plasmid scission assay
oxidative capacity
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Summary:In order to evaluate the effect of the joint air pollution prevention and control program on the toxicity of the airborne particles in Beijing during the APEC conference, we collected the PM and PM (particulate matter with aerodynamic diameters of less than 10 μm and 2.5 μm respectively) from October to December in the urban district of Beijing, and analyzed the oxidative capacity of the particles by plasmid scission assay. The results indicated that the oxidative capacity of PM was higher than that of PM during the APEC conference, and that the damage rate of supercoiled DNA by the samples increased with their experimental dose levels. The TD30 (toxic dose of PM causing 30% of plasmid DNA damage, unit: μg·mL ) was used to indicate the oxidative capacity and the lower TD30 values indicated higher oxidative capacity. The TD30 values of the PM samples before, during, and after APEC conference displayed a descending order of during APEC (November) >before APEC (October) >after APEC (December), which indicated a
ISSN:0250-3301