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Level and Contamination Assessment of Environmentally Sensitive Elements in Smaller than 100 μm Street Dust Particles from Xining, China

Author

Listed:
  • Ni Zhao

    (School of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, China)

  • Xinwei Lu

    (School of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, China)

  • Shigang Chao

    (School of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, China)

Abstract

Concentrations of the environmentally sensitive elements (ESEs) As, Co, Cu, Mn, Ni, Pb, V and Zn in smaller than 100 μm street dust particles from Xining were measured using X-ray fluorescence spectrometry and their contamination levels were assessed based on enrichment factor ( EF ), geoaccumulation index ( I geo ) and pollution load index ( PLI ). The concentrations of As, Co, Cu, Mn, Ni, Pb, V and Zn in smaller than 100 μm street dust particles from Xining are 0.1–0.8, 2.7–10.9, 0.7–5.2, 0.3–1.1, 0.6–2.5, 1.2–11.1, 0.7–1.3 and 0.4–2.9 times the background values of Qinghai soil, respectively. The calculated EF and I geo values reveal the order Co > Pb > Cu > Zn > V > Ni > Mn > As. The EF and I geo values of Co, Cu, Pb and Zn are higher indicating that there is considerable pollution by these elements in smaller than 100 μm street dust particles, especially for Co. The EF and I geo of Mn, Ni and V are lower and the assessment results indicate an absence of distinct Mn, Ni and V pollution in the studied samples. The mean value of PLI site is 1.14, indicating a slightly pollution in the whole city of Xining. The order of PLI area for the five tested districts is Center District (CD) > East District (ED) > West District (WD) > North District (ND) > South District (SD), showing that ESEs pollution in the South District is the lightest while it is the highest in the Central District.

Suggested Citation

  • Ni Zhao & Xinwei Lu & Shigang Chao, 2014. "Level and Contamination Assessment of Environmentally Sensitive Elements in Smaller than 100 μm Street Dust Particles from Xining, China," IJERPH, MDPI, vol. 11(3), pages 1-14, February.
    • Handle: RePEc:gam:jijerp:v:11:y:2014:i:3:p:2536-2549:d:33539
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    Cited by:

    1. Xiufeng Han & Xinwei Lu & Qinggeletu & Yongfu Wu, 2017. "Health Risks and Contamination Levels of Heavy Metals in Dusts from Parks and Squares of an Industrial City in Semi-Arid Area of China," IJERPH, MDPI, vol. 14(8), pages 1-12, August.

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