Ambient Aerosols in Iraq and Afghanistan: Size, Concentration and Elemental and Biological Composition
Air in Iraq and Afghanistan has high concentrations of ambient aerosols. An ongoing study, started in February 2008 in Baghdad, Iraq, and later expanded to two sites in Afghanistan, is continuously collecting aerosols in eight size fractions less than 10 microns in aerodynamic diameter to quantify human exposure to the respirable fraction of these aerosols. These samples are being collected using an eight-stage DRUM aerosol impactor. The samples are analyzed with 1.5-hour resolution for aerosol mass concentration by beta gauge and elemental composition for 28 specific elements between sodium and uranium by synchrotron x-ray fluorescence. Also, select samples have been analyzed for the presence of markers for live cells, dead cells, and spores using a spectrofluorometer and viable biological species through culturing and identification. The results of these analyses show high concentrations of elements such as lead, aluminum and magnesium and the presence of pathogenic bacteria, such as bacillus cereus and paenibacillus thiaminolyticus, in the ambient aerosol.
Bioaerosol Human Health Aerosol Impactor Composition
Catherine F Cahill Thomas A Cahill Linda S Powers Walther R Ellis
Geophysical Institute and Department of Chemistry,University of Alaska Fairbanks,Fairbanks,AK 99775, DELTA Group,Department of Chemical Engineering and Materials Science,University of California,Davis, Department of Electrical and Computer Engineering,University of Arizona,Tucson,AZ 85721,USA Department of Biomedical Engineering,University of Arizona,Tucson,AZ 85721,USA
国际会议
西安
英文
19-26
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）