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Soil heavy metal pollution in the urban-rural transitional area: a case study of Hangzhou city, China

机译：城市农村过渡地区土壤重金属污染 - 以杭州市杭州市为例

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A total of 74 surface soil samples (0-20cm) were collected from the urban-rural transitional area of Hangzhou city, China, and the contents of total metals (As, Cu, Co, Cd, Cr, Hg, Mn, Ni, Pb and Zn) were determined. The combination of multivriate statistical and geostatistical methods successfully separated the contaminating elements (As, Cd, Cu, Hg, Pb and Zn) from the uncontaminated elements (Co, Cr, Ni and Mn). A significant correlation was found between the uncontaminated elements and the total Al <,2>O<,3>, Fe<,2>O<,3>, and SiO<,2> in soils, indicating the source of these elements was largely controlled by soil-forming factors. On the other hand, those contaminating elements showed relatively weaker correlation and higher spatial variability, indicating that the abundance and spatial distribution of the elements were mostly affected by anthropic inputs. Through the pollution evaluation, it was found 69.2% of the study area suffers from moderate or severe pollution problems.
机译：从杭州市市，中国城乡的城乡过渡地区和总金属的内容收集了74种表面土样品（0-20cm）（如，Cu，Co，Cd，Cr，Hg，Mn，Ni，确定了Pb和Zn。多改性统计和地质统计学方法的组合成功地将污染元素（AS，Cd，Cu，Hg，Pb和Zn）与未污染的元素（Co，Cr，Ni和Mn）分离。在未受污染的元素和土壤中的未污染元素和总Al <，2> O <，3，3,2，Fe <，2> O 3，3>和SiO <，2>之间发现了显着的相关性，表明这些元素的来源是基本上受土壤形成因素控制。另一方面，这些污染元件表明，这些污染元件的相关性和更高的空间变异性，表明元件的丰度和空间分布主要受到人类投入的影响。通过污染评价，发现69.2％的研究区受到中度或严重的污染问题。

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