DOI: 10.1016/j.atmosenv.2014.06.011
Scopus记录号: 2-s2.0-84902319359
论文题名: Measurements of size- and time-resolved elemental concentrations at a California dairy farm
作者: Zhao Y ; , Cliff S ; S ; , Wexler A ; S ; , Javed W ; , Perry K ; , Pan Y ; , Mitloehner F ; M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 773
结束页码: 781
语种: 英语
英文关键词: CAFO
; Dairy
; Elemental concentrations
; RDI sampler
; XRF
Scopus关键词: Aluminum
; Calcium
; Dairies
; Light sources
; Manganese
; Rain
; Silicon
; Titanium
; Zinc
; Airborne particulate matters
; CAFO
; Dry and wet conditions
; Elemental concentrations
; RDI sampler
; Rotating drum impactor
; Synchrotron x-ray fluorescences
; XRF
; Magnesium
; aluminum
; calcium
; chlorine
; copper
; ferrous ion
; magnesium
; manganese
; phosphorus
; potassium
; rain
; silicon
; sulfur
; titanium
; trace element
; zinc
; atmospheric pollution
; concentration (composition)
; dairy farming
; emission
; measurement method
; particle size
; pollutant source
; rainfall
; trace element
; X-ray fluorescence
; agriculture
; article
; dairy farm
; falling
; measurement
; particle size
; particulate matter
; priority journal
; rotating drum impactor sampler
; sampler
; synchrotron
; United States
; X ray fluorescence
; California
; United States
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: Airborne particulate matter with aerodynamic size less than 10μm was collected at a California dairy in fall 2006 using a Rotating Drum Impactor (RDI) sampler in 8 size ranges (i.e., 10-5, 5-2.5, 2.5-1.15, 1.15-0.75, 0.75-0.56, 0.56-0.34, 0.34-0.26, and 0.26-0.09μm). The RDI samples were analyzed using synchrotron X-ray Fluorescence (XRF) at the Advance Light Source (ALS), Lawrence National Berkeley Laboratory, to derive the concentrations of trace elements Mg, Al, Si, P, S, Cl, K, Ca, Ti, Cu, Fe, Mn, and Zn. During this study, periods of rainfall in early November provided an opportunity to isolate particle emission sources. After the rainfalls, elemental concentrations decreased by about 80% for Mg, Al, Si, and Ti, 70% for Fe and Mn, 65% for Cu, and 60% for K and Ca. By contrast, the concentrations of the elements P, S, Zn and Cl did not decrease as significantly as others. Therefore, it is very likely that the dairy drylot corrals could be a major source of the elements Mg, Al, Si, K, Ca, Ti, Cu, Fe, and Mn under dry condition, but not of elements P, S, Zn and Cl. Elements Mg, Al, Si, K, Ca, Ti, Cu, Fe, and Mn were correlated with each other under both dry and wet conditions (R2 ranging from 0.47 to 0.99), indicating that they had common emission sources. Highly correlated sub-groups of elements shifted from dry to wet conditions, R2>0.96 among elements Mg, Al, and Si, R2>0.93 among elements K, Ca, Ti, Cu, Fe, and Mn under dry condition, and R2>0.87 among elements Mg, Al, Si, Ti, Fe, and Mn under wet condition, possibly due to the change in emission sources. Size distribution of the observed elements revealed (1) a general trend that elemental concentrations increased with particle size except for S, which had a peak at 1.15μm and (2) a greater portion of coarse elements (2.5-10μm) than fine elements (less than 2.5μm) for all elements except for S and Zn under both dry and wet conditions. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81124
Appears in Collections: 气候变化事实与影响
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作者单位: Air Quality Research Center, University of California-Davis, One Shields Ave, Davis, CA 95616, United States; Institute of Soil and Environmental Sciences, University of Agriculture, Jail Road, Faisalabad, Pakistan; Department of Atmospheric Sciences, University of Utah, 135 S 1460 E, Salt Lake City, UT 84112, United States; Department of Animal Science, University of California-Davis, One Shields Ave, Davis, CA 95616, United States; Air Quality Research Center, University of California-Davis, One Shields Ave, Davis, CA, United States
Recommended Citation:
Zhao Y,, Cliff S,S,et al. Measurements of size- and time-resolved elemental concentrations at a California dairy farm[J]. Atmospheric Environment,2014-01-01,94