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Level and contamination assessment of environmentally sensitive elements in smaller than 100 μm street dust particles from Xining, China.

Zhao N, Lu X, Chao S - Int J Environ Res Public Health (2014)

Bottom Line: The EF and Igeo 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 mean value of PLIsite is 1.14, indicating a slightly pollution in the whole city of Xining.The order of PLIarea 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.

View Article: PubMed Central - PubMed

Affiliation: School of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, China. zhaonikuaile@gmail.com.

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 (Igeo) 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 Igeo values reveal the order Co > Pb > Cu > Zn > V > Ni > Mn > As. The EF and Igeo 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 Igeo 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 PLIsite is 1.14, indicating a slightly pollution in the whole city of Xining. The order of PLIarea 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.

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Related in: MedlinePlus

Box-plots of PLI for ESEs in smaller than 100 μm street dust particles from Xining (ED: East District; WD: West District; SD: South District; ND: North District; CD: Central District; TD: Total District; *: extreme).
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ijerph-11-02536-f005: Box-plots of PLI for ESEs in smaller than 100 μm street dust particles from Xining (ED: East District; WD: West District; SD: South District; ND: North District; CD: Central District; TD: Total District; *: extreme).

Mentions: The calculated PLI values including eight ESEs (As, Co, Cu, Mn, Ni, Pb, V and Zn) in smaller than 100 μm street dust particles from Xining are summarized in Figure 5. According to Suresh et al. [52], PLI values equal to zero indicate perfection, a value of one indicates baseline levels of pollutants present and values above one indicate progressive deterioration. The extent of pollution increases with the increase in the numerical PLI value.


Level and contamination assessment of environmentally sensitive elements in smaller than 100 μm street dust particles from Xining, China.

Zhao N, Lu X, Chao S - Int J Environ Res Public Health (2014)

Box-plots of PLI for ESEs in smaller than 100 μm street dust particles from Xining (ED: East District; WD: West District; SD: South District; ND: North District; CD: Central District; TD: Total District; *: extreme).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3986991&req=5

ijerph-11-02536-f005: Box-plots of PLI for ESEs in smaller than 100 μm street dust particles from Xining (ED: East District; WD: West District; SD: South District; ND: North District; CD: Central District; TD: Total District; *: extreme).
Mentions: The calculated PLI values including eight ESEs (As, Co, Cu, Mn, Ni, Pb, V and Zn) in smaller than 100 μm street dust particles from Xining are summarized in Figure 5. According to Suresh et al. [52], PLI values equal to zero indicate perfection, a value of one indicates baseline levels of pollutants present and values above one indicate progressive deterioration. The extent of pollution increases with the increase in the numerical PLI value.

Bottom Line: The EF and Igeo 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 mean value of PLIsite is 1.14, indicating a slightly pollution in the whole city of Xining.The order of PLIarea 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.

View Article: PubMed Central - PubMed

Affiliation: School of Tourism and Environment, Shaanxi Normal University, Xi'an 710062, China. zhaonikuaile@gmail.com.

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 (Igeo) 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 Igeo values reveal the order Co > Pb > Cu > Zn > V > Ni > Mn > As. The EF and Igeo 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 Igeo 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 PLIsite is 1.14, indicating a slightly pollution in the whole city of Xining. The order of PLIarea 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.

Show MeSH
Related in: MedlinePlus