Journal
ENVIRONMENTAL EARTH SCIENCES
Volume 73, Issue 5, Pages 2319-2327Publisher
SPRINGER
DOI: 10.1007/s12665-014-3578-x
Keywords
Dust; Heavy metal; Source; Principal component analysis; Xining; China
Funding
- National Natural Science Foundation of China [41271510]
- Fundamental Research Funds for the Central University [GK201305008]
Ask authors/readers for more resources
Concentrations of Co, Cr, Cu, Mn, Ni, Pb, V and Zn in less than 100 mu m particles of street dust from Xining, China were measured by wavelength dispersive X-ray fluorescence spectrometry. Correlation analysis, principal component analysis and cluster analysis were used to identify the potential sources of heavy metals in smaller than 100 mu m dust. The results showed that the mean concentrations of Co, Cr, Cu, Mn, Ni, Pb, V and Zn in the studied samples were 50.0, 576.8, 40.8, 408.8, 22.6, 52.9, 57.1 and 108.9 mg kg(-1), which were 5.0, 8.2, 1.8, 0.7, 0.8, 2.5, 0.8 and 1.4 times the corresponding background value of Qinghai soil, respectively. Compared with Qinghai soil, Co, Cr, Cu, Pb and Zn presented accumulation with different degrees in smaller than 100 mu m dust of Xining, especially Cr and Co which were markedly enriched, whereas Mn, Ni and V were deficient. Four main sources were identified based on the results of correlation analysis, principal component analysis and cluster analysis. Ni, V and Cr originated from nature (local soil) and industrial sources (steel plant, metal processing factory, coal power plant). Cu, Pb and Zn mainly derived from traffic source. Mn and Co mainly originated from local soil and construction sources (coating material and paint, etc.), respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available