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首页> 外文期刊>Environmental engineering and management journal >COMPARISON OF SOURCES AND SPATIAL DISTRIBUTION OF HEAVY METALS AT TWO PERI-URBAN AREAS IN SOUTHWEST SHENYANG, CHINA
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COMPARISON OF SOURCES AND SPATIAL DISTRIBUTION OF HEAVY METALS AT TWO PERI-URBAN AREAS IN SOUTHWEST SHENYANG, CHINA

机译：沉阳西南两个围城区重金属来源及空间分布的比较

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摘要

To investigate the sources and spatial distribution of heavy metals in soil, samples were collected at two scales from the alluvial plains of Shenyang, China. Statistical analysis at small scale showed average concentrations of Cu, Pb, Zn, Ni, Cr and As of 36.76, 33.33,100.06, 37.98, 91.26, and 7.99 mg/kg, respectively. Corresponding large-scale concentrations were 34.11, 46.38, 82.44, 32.51, 83.77, and 24.06 mg/kg. At both scales, Ni and Cr were mainly controlled by parent materials and Pb by anthropogenic activities. The main sources of Cu, Zn and As varied with scale. To describe the spatial structure of heavy metals, geostatistical analysis and geographic information systems were used to visualize and compare levels in different areas at both scales. The samples at small scales were located in the region of strong variation at large scale, indicating that the sampling strategy is appropriate for obtaining more reliable interpolation results. Health risk assessment based on 95th percentile concentrations of total elemental concentrations indicated that noncancer effect and cancer effect of children and adults were acceptable at the two different scales.
机译：为了探讨土壤中重金属的来源和空间分布，来自中国沉阳海拔的两种尺度的样品。小规模的统计分析显示了Cu，Pb，Zn，Ni，Cr的平均浓度，分别为36.76,33.3.3,100.06,37.98,91.26和7.99 mg / kg。相应的大规模浓度为34.11,46.38,82.44,32.51,83.77和24.06 mg / kg。在两种尺度上，Ni和Cr主要由母材料和PB通过人为活动控制。 Cu，Zn的主要来源和尺度变化。为了描述重金属的空间结构，地统计分析和地理信息系统用于可视化和比较两个尺度不同区域的水平。小鳞片上的样品位于大规模的强变化区域中，表明采样策略适合获得更可靠的内插结果。基于第95百分位数的总元素浓度的健康风险评估表明，在两种不同的尺度上可以接受儿童和成人的非癌症效应和癌症作用。

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