Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Airborne endotoxin in fine particulate matter in Beijing
https://orcid.org/0000-0002-7731-0803
https://orcid.org/0000-0002-9326-0148
Abstract 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 0.65 EU/m3 (range: 0.10–75.02) and 10.25 EU/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.
Highlights We provide the first 1-year continuous airborne endotoxin concentrations in China. Large variations in endotoxin concentration were observed. Ambient environmental factors were found to influence endotoxin concentrations. Chemical compositions of particles were associated with endotoxin concentrations. Endotoxin concentration was positively correlated with ROS, but not DTT.
Airborne endotoxin in fine particulate matter in Beijing
https://orcid.org/0000-0002-7731-0803
https://orcid.org/0000-0002-9326-0148
Abstract 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 0.65 EU/m3 (range: 0.10–75.02) and 10.25 EU/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.
Highlights We provide the first 1-year continuous airborne endotoxin concentrations in China. Large variations in endotoxin concentration were observed. Ambient environmental factors were found to influence endotoxin concentrations. Chemical compositions of particles were associated with endotoxin concentrations. Endotoxin concentration was positively correlated with ROS, but not DTT.
Airborne endotoxin in fine particulate matter in Beijing
https://orcid.org/0000-0002-7731-0803
https://orcid.org/0000-0002-9326-0148
Abstract 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 0.65 EU/m3 (range: 0.10–75.02) and 10.25 EU/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.
Highlights We provide the first 1-year continuous airborne endotoxin concentrations in China. Large variations in endotoxin concentration were observed. Ambient environmental factors were found to influence endotoxin concentrations. Chemical compositions of particles were associated with endotoxin concentrations. Endotoxin concentration was positively correlated with ROS, but not DTT.
Airborne endotoxin in fine particulate matter in Beijing
Guan, Tianjia (Autor:in) / Yao, Maosheng (Autor:in) / Wang, Junxia (Autor:in) / Fang, Yanhua (Autor:in) / Hu, Songhe (Autor:in) / Wang, Yan (Autor:in) / Dutta, Anindita (Autor:in) / Yang, Junnan (Autor:in) / Wu, Yusheng (Autor:in) / Hu, Min (Autor:in)
Atmospheric Environment ; 97 ; 35-42
01.08.2014
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Coarse particulate matter and airborne endotoxin within wood stove homes
| Wiley | 2013
Coarse particulate matter and airborne endotoxin within wood stove homes
| Online Contents | 2013
Source Apportionment of Airborne Fine Particulate Matter in an Underground Mine
| Taylor & Francis Verlag | 2003