...
首页> 外文期刊>International Journal of Environmental Research and Public Health >Spatial Distribution, Sources Apportionment and Health Risk of Metals in Topsoil in Beijing, China
【24h】

Spatial Distribution, Sources Apportionment and Health Risk of Metals in Topsoil in Beijing, China

机译:北京表层土壤金属的空间分布,来源分配及健康风险

获取原文
   

获取外文期刊封面封底 >>

       

摘要

In order to acquire the pollution feature and regularities of distribution of metals in the topsoil within the sixth ring road in Beijing, a total of 46 soil samples were collected, and the concentrations of twelve elements (Nickel, Ni, Lithium, Li, Vanadium, V, Cobalt, Co, Barium, Ba, Strontium, Sr, Chrome, Cr, Molybdenum, Mo, Copper, Cu, Cadmium, Cd, Zinc, Zn, Lead, Pb) were analyzed. Geostatistics and multivariate statistics were conducted to identify spatial distribution characteristics and sources. In addition, the health risk of the analyzed heavy metals to humans (adult) was evaluated by an U.S. Environmental Protection Agency health risk assessment model. The results indicate that these metals have notable variation in spatial scale. The concentration of Cr was high in the west and low in the east, while that of Mo was high in the north and low in the south. High concentrations of Cu, Cd, Zn, and Pb were found in the central part of the city. The average enrichment degree of Cd is 5.94, reaching the standard of significant enrichment. The accumulation of Cr, Mo, Cu, Cd, Zn, and Pb is influenced by anthropogenic activity, including vehicle exhaustion, coal burning, and industrial processes. Health risk assessment shows that both non-carcinogenic and carcinogenic risks of selected heavy metals are within the safety standard and the rank of the carcinogenic risk of the four heavy metals is Cr > Co > Ni > Cd.
机译:为了了解北京六环路表层土壤中金属的污染特征和分布规律,共采集了46个土壤样品,其中12种元素(镍,镍,锂,锂,钒,分析了V,钴,Co,钡,Ba,锶,Sr,铬,Cr,钼,Mo,铜,Cu,Cd,Cd,锌,Zn,铅,Pb)。进行了地统计学和多元统计以识别空间分布特征和来源。另外,通过美国环境保护署的健康风险评估模型评估了所分析的重金属对人类(成人)的健康风险。结果表明,这些金属在空间尺度上有明显的变化。 Cr的浓度在西部较高,在东部较低,而Mo的浓度在北部较高,在南部较低。在城市中心地区发现了高浓度的Cu,Cd,Zn和Pb。镉的平均富集度为5.94,达到显着富集的标准。 Cr,Mo,Cu,Cd,Zn和Pb的积累受人为活动的影响,包括车辆排气,燃煤和工业过程。健康风险评估表明,所选重金属的非致癌和致癌风险均在安全标准之内,四种重金属的致癌风险等级为Cr> Co> Ni> Cd。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号