EFFECTS OF ATMOSPHERIC DUST ON SOILS IN INDUSTRIAL ZONES
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    Abstract:

    Samples of airborne dust and soils around the two steel factories in Nanjing were collected and their element concentrations were analyzed by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and their magnetic susceptibility determined by magnetic susceptibility analyzer.Results indicate that the deposition flux around the two steel factories was 190 t km-2a-1 and 407 t km-2a-1,respectively and the annual accumulation in soil surface due to dust deposition could reach up to 0.3 mm,which is an important contribution to soil formation in a long run.The contents of Al,K,Na,Ti,and V in the dust were lower than that in the surface soils,but Ca,Fe,Zn,Mn,Pb and Cu were much higher.The magnetic susceptibility (MS) of the surface soils was over 100×10-8m3kg-1 except that in the paddy field,and the MS of the roof dust was much higher than that of the surface soils.MS decreased sharply with depth in the several centimeters of soils around the factories,indicating an obvious surface enrichment of magnetic materials and heavy metals.The study reveals that the dust from industrial sources has a strong impact on the soils around,by causing enrichment of heavy metals in the soil surface and sharp rise in magnetic susceptibility.

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Ni Liujian, Zhang Ganlin, Yang Jinling, Ruan Xinling, Zhao Wenjun, Zhao Yuguo, Zhou Lixiang. EFFECTS OF ATMOSPHERIC DUST ON SOILS IN INDUSTRIAL ZONES[J]. Acta Pedologica Sinica,2007,44(4):637-642.

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History
  • Received:April 13,2006
  • Revised:September 11,2006
  • Adopted:
  • Online: February 25,2013
  • Published: