...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Geochemistry and Health >Heavy metals contamination in urban surface soils of Medak province, India, and its risk assessment and spatial distribution
【24h】

Heavy metals contamination in urban surface soils of Medak province, India, and its risk assessment and spatial distribution

机译：印度Medak省城市表层土壤中的重金属污染及其风险评估和空间分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The main purpose of the current study is to assess the contamination status, human health risk, and spatial distribution of heavy metals in the urban soils from the Medak province in India. For this purposes, a total of 40 urban surface soil samples were collected and analyzed seven heavy metals including chromium (Cr), copper (Cu), cadmium (Cd), arsenic (As), nickel (Ni), lead (Pb), and zinc (Zn). The results of the study showed that the concentration of Cr (81-751 mg/kg), Cu (2-180 mg/kg), Zn (25-108 mg/kg), Pb (5-77 mg/kg), Ni (1-50 mg/kg), As (0.4-14 mg/kg), and Cd (0.1-4.2 mg/kg), respectively, was found above their natural background values. The geo-accumulation index analysis indicated that except Zn, all other tested heavy metals had a range of moderately to heavily polluted/contaminated in the study region. Spatial distribution pattern analysis inferred that the soil heavy metal (Cu, Cr, Zn, and Ni) pollutions in western regions of Medak were relatively larger than that in central and eastern regions. The hazard index (HI) values for Cu, Cd, Zn, As, Pb, and Ni were below 1, implying that there is no non-carcinogenic risks exposure from these heavy metals in soil for children and adults in the study region. However, HI value for Cr ranged from 3.08E-01 to 2.86E+00 for children, implying that children were relatively vulnerable population than adults in the current study region. Comparatively speaking, 67.5% and 100% total carcinogenic risks for Cr values for adults and children were larger than the acceptable threshold value of 1.0E-04, indicating chromium poses the greatest carcinogenic risk in the study region.
机译：本研究的主要目的是评估印度Medak省城市土壤中的污染状况，人类健康风险以及重金属的空间分布。为此，总共收集了40个城市表层土壤样品，并分析了7种重金属，包括铬（Cr），铜（Cu），镉（Cd），砷（As），镍（Ni），铅（Pb），和锌（Zn）。研究结果表明，Cr（81-751 mg / kg），Cu（2-180 mg / kg），Zn（25-108 mg / kg），Pb（5-77 mg / kg），发现镍（1-50 mg / kg），砷（0.4-14 mg / kg）和镉（0.1-4.2 mg / kg）高于其自然本底值。地质累积指数分析表明，除锌以外，所有其他测试重金属在研究区域内均具有中等至重度污染/污染的范围。空间分布格局分析表明，Medak西部地区的土壤重金属（Cu，Cr，Zn和Ni）污染相对大于中部和东部地区。 Cu，Cd，Zn，As，Pb和Ni的危害指数（HI）值均低于1，这表明在研究区域中，儿童和成人的土壤中这些重金属均无非致癌风险。但是，儿童的Cr HI值范围为3.08E-01至2.86E + 00，这表明在当前研究区域中，儿童比成年人相对脆弱。相对而言，成人和儿童的Cr值的总致癌风险分别为67.5％和100％，高于可接受的阈值1.0E-04，表明铬是研究区域内最大的致癌风险。

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