Heavy metals and trace elements in atmospheric fall-out: Their relationship with topsoil and wheat element composition

被引:136
作者
Bermudez, Gonzalo M. A. [1 ,2 ]
Jasan, Raquel [3 ]
Pla, Rita [3 ]
Pignata, Maria L. [1 ,2 ]
机构
[1] Univ Nacl Cordoba, Catedra Quim Gen, Fac Ciencias Exactas Fis & Nat, RA-5000 Cordoba, Argentina
[2] Consejo Nacl Invest Cient & Tecn, Inst Multidisciplinario Biol Vegetal IMBIV, RA-1033 Buenos Aires, DF, Argentina
[3] Comis Nacl Energia Atom CAE, Ezeiza, Argentina
关键词
Bulk deposition; Cement plant; Industrial incinerator; Triticum aestivum L; Argentina; RAMALINA-CELASTRI; DEPOSITION; POLLUTION; ARGENTINA; CADMIUM; SOILS; CITY; CD; VARIABILITY; TILLANDSIA;
D O I
10.1016/j.jhazmat.2012.02.023
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The objectives of this study were to determine the average concentrations and deposition rates of 28 elements in atmospheric bulk deposition and to elucidate associations among topsoil, bulk deposition and wheat element composition. The fluxes of arsenic (As), copper (Cu), lead (Pb) and zinc (Zn) deposition in Cordoba were higher than in other agro-ecosystems, which reflects both natural (geochemistry and topsoil removal) and anthropogenic sources. High lanthanide, uranium (U) and thorium (Th) concentrations revealed the impact of an open cast uranium mine. The highest enrichment factors (EF) were those of Cu, Pb, Zn and nickel (Ni), with calcium (Ca) being the most prominent in the surroundings of a cement plant. Industries and the transport of airborne urban pollutants were the main anthropogenic sources for Ca, Cu, Ni, Pb, Zn, cadmium (Cd), iron (Fe), manganese (Mn) and antimony (Sb). The concentrations of metals in wheat grain were predicted using the topsoil and atmospheric fall-out composition with R-2 = 0.90, with the latter being the best explanatory variable. The present study highlights the potential health hazards of wheat consumption (Environmental Protection Agency) by the assessment of heavy metals in bulk atmospheric deposition. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:447 / 456
页数:10
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