DOI: 10.1016/j.atmosenv.2015.09.017
Scopus记录号: 2-s2.0-84942062503
论文题名: Stable isotopes of lead and strontium as tracers of sources of airborne particulate matter in Kyrgyzstan
作者: Dewan N ; , Majestic B ; J ; , Ketterer M ; E ; , Miller-Schulze J ; P ; , Shafer M ; M ; , Schauer J ; J ; , Solomon P ; A ; , Artamonova M ; , Chen B ; B ; , Imashev S ; A ; , Carmichael G ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 120 起始页码: 438
结束页码: 446
语种: 英语
英文关键词: Air pollution
; Aral Sea
; Central Asia
; Dust
; Lead (Pb) isotopes
; Long-range transport
; PM10
; Sediments
; Soils
; Strontium (Sr) isotopes
Scopus关键词: Air pollution
; Air quality
; Arid regions
; Atmospheric movements
; Dust
; Flood control
; Isotopes
; Landforms
; Sediments
; Soils
; Airborne particulate matters
; Anthropogenic sources
; Aral Sea
; Central Asia
; Elemental compositions
; Lead stable isotopes
; Long range transport
; Particulate Matter
; Strontium
; lead
; stable isotope
; strontium
; air quality
; anthropogenic source
; atmospheric pollution
; dust
; isotopic composition
; isotopic ratio
; lead isotope
; long range transport
; particulate matter
; pollutant transport
; stable isotope
; strontium isotope
; suspended sediment
; tracer
; air quality
; Article
; Kyrgyzstan
; particulate matter
; priority journal
; sea
; sediment
; Aral Sea
; Central Asia
; Kyrgyzstan
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: Central Asia is dominated by an arid climate and desert-like conditions, leading to the potential for long-range transport of desert dust within and out of the region. Of particular interest is the Aral Sea, which has receded in size largely due to water diversion. As a result, newly exposed sediments are resuspended by wind and thus, may be a potential new source of particulate matter within the region. Here, strontium and lead stable isotope ratios are employed along with detailed elemental composition, to explore the contribution of long-range transport of Aral Sea sediments, as well as other potential sources of dust, within Central Asia. Ambient PM10 samples were collected during dust and non-dust events from mid-2008 to mid-2009 at two sites in Kyrgyzstan located ~1200 and 1500 km ESE of the Aral Sea. Aral Sea sediments and local Kyrgyzstan soils were resuspended and sized to PM10. The Aral Sea sediments have an average 87Sr/86Sr ratio of 0.70992. In contrast, the Sr isotope ratio in local soils exhibits an average ratio of 0.71579. Ambient PM10 collected in Kyrgyzstan has an average 87Sr/86Sr ratio of 0.71177, falling between the values of these two potential sources and indicating a complex mixture of contributing sources. At both sites, airborne Sr isotope ratios measured during dust events were similar, suggesting that Aral Sea sediments only minimally affect air quality in Kyrgyzstan. Elemental analysis and Pb isotope ratios supported this finding. While the Pb isotopes and elemental data both indicate an anthropogenic source, long-range dust transport from other deserts inside and outside the region cannot be ruled out as sources of PM10 in Central Asia. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81513
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Department of Chemistry and Biochemistry, University of Denver, Denver, CO, United States; Department of Chemistry, Metropolitan State University of Denver, 1201 5th Street, Denver, CO, United States; Department of Chemistry, California State University, 6000 J Street, Sacramento, CA, United States; Wisconsin State Laboratory of Hygiene, 2601 Agriculture Drive, Madison, WI, United States; University of Wisconsin, 660 North Park St, Madison, WI, United States; U.S. EPA, Office of Research and Development, Las Vegas, NV, United States; Institute of Atmospheric Physics, Moscow, Russian Federation; Kyrgyz-Russian Slavic University, 44 Kievskaya Street, Bishkek, Kyrgyzstan; Department of Chemical and Biochemical Engineering, The University of Iowa, Iowa City, IA, United States
Recommended Citation:
Dewan N,, Majestic B,J,et al. Stable isotopes of lead and strontium as tracers of sources of airborne particulate matter in Kyrgyzstan[J]. Atmospheric Environment,2015-01-01,120