The Spatial Distribution, Contamination Status and Contributing Factors of Heavy Metals in Cropland Soils of Twelve Cities in Shandong Province, China
| Autor: | Aixia Jiang, Weina Xue, Jiemin Cheng, Yanbo Peng, Taiyu Chen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
chemistry.chemical_element Zinc 010501 environmental sciences Spatial distribution 01 natural sciences lcsh:Technology lcsh:Chemistry Chromium General Materials Science Instrumentation lcsh:QH301-705.5 0105 earth and related environmental sciences Fluid Flow and Transfer Processes Cadmium lcsh:T Process Chemistry and Technology General Engineering Soil classification Heavy metals industrial added value Contamination metal accumulation lcsh:QC1-999 Computer Science Applications chemistry lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Environmental chemistry Soil water Environmental science soil types cropland soils lcsh:Engineering (General). Civil engineering (General) lcsh:Physics |
| Zdroj: | Applied Sciences, Vol 10, Iss 6, p 1963 (2020) Applied Sciences Volume 10 Issue 6 |
| ISSN: | 2076-3417 |
| Popis: | The aims of this study were to analyze the spatial distributions of, contamination statuses of, and factors contributing to, heavy metals in cropland areas of different cities thus, 55 agricultural soils were collected from 12 cities of Shandong Province, China. Concentrations of copper (Cu), lead (Pb), cadmium (Cd), chromium (Cr), nickel (Ni) and zinc (Zn) were determined. Results showed that average contents of Cu, Pb, Cd, Cr, Ni and Zn were 24.13, 31.77, 0.16, 130.63, 22.13, and 71.19 mg· kg&minus 1, respectively, and Pb and Cd had similar spatial distributions in those cities. Specifically, contents of Cr in cities of Weifang, Weihai, Yantai and Zibo were significantly higher than it in other cities Weihai and Zibo also had significantly high contents of Zn. Moreover, concentrations of Cr in brown soils and cinnamon soils were significantly higher than that in fluvo-aquic soils, while other metals showed no significant differences among the soil types. Furthermore, Cu, Pb and Zn showed significant concentration decreases with respect to those measured in 2007. The correlation analysis and factor analysis indicated that the contamination of Pb and Cd was mainly caused by economic activities. In addition, the significantly correlated Cu/Ni/Zn and Pb/Cd indicated the inputs from different human activities, while Cr was prone to multiple sources. This study demonstrated that more attention should be given to the contamination by Cr, Pb and Cd, and that the management of human economic activities is vitally imperative for safety of surrounding cropland soils. |
| Databáze: | OpenAIRE |
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