Level and Contamination Assessment of Environmentally Sensitive Elements in Smaller than 100 μm Street Dust Particles from Xining, China
| Autor: | Ni Zhao, Shigang Chao, Xinwei Lu |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Pollution
China street dust Health Toxicology and Mutagenesis media_common.quotation_subject Air pollution Fluorescence spectrometry lcsh:Medicine chemistry.chemical_element enrichment factor Street dust medicine.disease_cause Article Arsenic contamination assessment Air Pollution Metals Heavy environmentally sensitive elements medicine Cities media_common lcsh:R Mean value Public Health Environmental and Occupational Health Dust Contamination chemistry Environmental chemistry Environmental science Enrichment factor |
| Zdroj: | International Journal of Environmental Research and Public Health International Journal of Environmental Research and Public Health, Vol 11, Iss 3, Pp 2536-2549 (2014) International Journal of Environmental Research and Public Health; Volume 11; Issue 3; Pages: 2536-2549 |
| ISSN: | 1660-4601 |
| DOI: | 10.3390/ijerph110302536 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|