DOI: 10.1016/j.atmosenv.2014.08.005
Scopus记录号: 2-s2.0-84906503282
论文题名: Airborne endotoxin in fine particulate matter in Beijing
作者: Guan T ; , Yao M ; , Wang J ; , Fang Y ; , Hu S ; , Wang Y ; , Dutta A ; , Yang J ; , Wu Y ; , Hu M ; , Zhu T
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 97 起始页码: 35
结束页码: 42
语种: 英语
英文关键词: Chemical components
; Endotoxin
; Fine particulate matter
; Gaseous pollutants
; Meteorological factors
; Oxidative potential
Scopus关键词: Chemical component
; Endotoxin
; Fine particulate matter
; Gaseous pollutants
; Meteorological factors
; Oxidative potential
; arsenic
; cobalt
; dithiothreitol
; endotoxin
; fluoride ion
; magnesium ion
; nitrogen oxide
; phosphorus
; potassium ion
; reactive oxygen metabolite
; silicon dioxide
; sodium ion
; sulfur dioxide
; zinc
; aerosol composition
; atmospheric pollution
; concentration (composition)
; health impact
; particulate matter
; redox potential
; toxin
; air pollution
; air sampling
; Article
; China
; concentration (parameters)
; controlled study
; humidity
; meteorology
; oxidation reduction potential
; particulate matter
; spring
; temperature
; winter
; Beijing [China]
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Endotoxin is an important biological component of particulate matter (PM) which, upon inhalation, can induce adverse health effects, and also possibly complicate the diseases in combination with other pollutants. From 1 March 2012 to 27 February 2013 we collected air samples using quartz filters daily for the quantification of airborne endotoxin and also fine PM (PM2.5) in Beijing, China. The geometric means for endotoxin concentration and the fraction of endotoxin in PM were 0.65EU/m3 (range: 0.10-75.02) and 10.25EU/mg PM2.5 (range: 0.38-1627.29), respectively. The endotoxin concentrations were shown to vary greatly with seasons, typically with high values in the spring and winter seasons. Temperature and relative humidity, as well as concentrations of sulfur dioxide and nitrogen oxides were found to be significantly correlated with airborne endotoxin concentrations (p<0.05). Additionally, positive correlations were also detected between endotoxin concentrations and natural sources of Na+, K+, Mg2+, and F-, while negative correlations were observed between endotoxin concentrations and anthropogenic sources of P, Co, Zn, As, and Tl. Oxidative potential analysis revealed that endotoxin concentrations were positively correlated with reactive oxygen species (ROS), but not dithiothreitol (DTT) of PM. This study provided the first continuous time series of airborne endotoxin concentrations in Beijing, and identifies its potential associations with atmospheric factors. The information developed here can assist in the assessment of health effects of air pollution in Beijing. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80584
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Centre for Environment and Health, Peking University, Beijing, China
Recommended Citation:
Guan T,, Yao M,, Wang J,et al. Airborne endotoxin in fine particulate matter in Beijing[J]. Atmospheric Environment,2014-01-01,97