Spatial Patterns of Potentially Hazardous Metals in Soils of Lin’an City, Southeastern China

Shiying Yu, Zhoulun Chen, Keli Zhao, Zhengqian Ye, Luyao Zhang, Jiaqi Dong, Yangfeng Shao, Chaosheng Zhang and Weijun Fu
Additional contact information
Shiying Yu: State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an 311300, China
Zhoulun Chen: State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an 311300, China
Keli Zhao: State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an 311300, China
Zhengqian Ye: Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental Sciences and Resources, Zhejiang A & F University, Lin’an 311300, China
Luyao Zhang: Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental Sciences and Resources, Zhejiang A & F University, Lin’an 311300, China
Jiaqi Dong: Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, School of Environmental Sciences and Resources, Zhejiang A & F University, Lin’an 311300, China
Yangfeng Shao: Technology Promotion Center of Agriculture and Forestry in Lin’an City, Hangzhou 311300, China
Chaosheng Zhang: International Network for Environment and Health, School of Geography and Archaeology & Ryan Institute, National University of Ireland, Galway, Ireland
Weijun Fu: State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Lin’an 311300, China

IJERPH, 2019, vol. 16, issue 2, 1-14

Abstract: Urban soils are strongly related to human health. In this study, Lin’an city was chosen as a typical small-scale city with which to study the spatial variation of potentially hazardous metals (PHMs) in urban soils and their potential ecological risks using multivariate analysis, geostatistics and GIS techniques. A total of 62 soil samples were collected from the study area. The results showed that the average concentrations of total soil Mn, Cu, Zn, Pb, Cr, Cd were 439.42, 42.23, 196.80, 62.55, 63.65, 0.22 mg·kg −1 , respectively. Compared with the background values and the environmental quality standards, these PHMs were accumulated in urban soils to some extent. The single potential ecological risk indices of PHMs indicated that Pb and Cd had relatively high ecological risks. The pH and most of the PHMs had significant correlations ( p < 0.05). The principle components analysis (PCA) showed that Pb, Zn and Cu had similar pollution sources related to the vehicles’ exhaust emission; Mn and Cr were mainly from the parent materials; while Cd was from the emission of industrial manufactories. The spatial structures and distributions of PHMs and their corresponding available fractions had strong/moderate spatial autocorrelation, which were influenced by human activities.

Keywords: urban soil; geostatistical analysis; potentially hazardous metals; spatial distribution; ecological risk (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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