Soil heavy metal contamination related to roasted stone coal slag: a study based on geostatistical and multivariate analyses
| Autor: | De’an Li, Jiaming Wang, Jianguo Jiang, Tianran Li |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pollution
Soil test Health Toxicology and Mutagenesis media_common.quotation_subject 0211 other engineering and technologies chemistry.chemical_element 02 engineering and technology Zinc Manganese 010501 environmental sciences 01 natural sciences Mining Chromium Metals Heavy Soil Pollutants Environmental Chemistry 0105 earth and related environmental sciences media_common 021110 strategic defence & security studies Chemistry Metallurgy Slag General Medicine Contamination Coal Environmental chemistry visual_art Multivariate Analysis Soil water visual_art.visual_art_medium Environmental Monitoring |
| Zdroj: | Environmental Science and Pollution Research. 23:14405-14413 |
| ISSN: | 1614-7499 0944-1344 |
| Popis: | Soil was examined for vanadium (V) and related metal contamination near a stone coal mine in Hubei Province, China. In total, 92 surface and vertical (0-200 cm) soil samples were collected from the site. A handheld X-ray fluorescence spectrometer was used for in situ analysis of the soil concentrations of heavy metals, including V, chromium (Cr), copper (Cu), manganese (Mn), zinc (Zn), and lead (Pb). The mean concentrations of these metals were 931, 721, 279, 223, 163, and 11 mg/kg, respectively. Based on the Chinese Environmental Quality Standard for Soils guidelines, up to 88.0, 76.1, and 56.5 % of the soil samples had single factor pollution indices >3 for V, Cr, and Cu, respectively. Furthermore, 2.2 % of samples were slightly polluted with Zn, while there was no Mn or Pb contamination. GaussAmp curve fitting was performed based on the sample frequency distribution of the Nemerow pollution index. The fitted mean was 5.99, indicating severe pollution. The heavy metals were clustered into two groups, V/Cr/Cu/Zn and Mn/Pb, based on the spatial distributions, the Pearson correlation and principal component analyses. The positive correlations within the V/Cr/Cu/Zn group suggested that they originated from roasted stone coal slag. Finally, the negative correlation between the two groups was attributed to mechanical mixing of the slag and original soil. |
| Databáze: | OpenAIRE |
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