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首页> 外文期刊>Ecotoxicology and Environmental Safety >Spatial characteristics of heavy metal contamination and potential human health risk assessment of urban soils: A case study from an urban region of South India
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Spatial characteristics of heavy metal contamination and potential human health risk assessment of urban soils: A case study from an urban region of South India

机译：城市土壤重金属污染及潜在人体健康风险评估的空间特征 - 以南印度城市地区为例

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摘要

Due to the rapid development of urbanization, the contamination of heavy metals in urban soils has become one of the major concerns of environmental and risk to humans. The main objective was to determine the contamination of six heavy metals in 25 urban soils and also to evaluate the associated health risk via diverse indices for adults and children. The mean concentration of Pb (47.48 mg/kg), Cr (43.24 mg/kg), Cu (40.64 mg/kg), Zn (34.68 mg/kg), Co (16.54 mg/kg), and Ni (7.55 mg/kg) exceeded the geochemical background values. Pb and Zn were closely attributed to traffic sources. Geo-accumulation index (I-geo) showed that Pb and Co in the soils were at the moderately pollution level, while 4% of soil samples were moderately polluted to heavily pollution levels by Cu. Enrichment factor (EF) showed that soils presented minor to severe anthropogenic pollution levels in the investigated region. The heavy metals to the non-carcinogenic risk of humans in the investigated region are absolutely from Cr and Pb, while the carcinogenic risk is controlled by Cr, and the remaining metals pose no possible risk to the local people. Specially, children had larger health risks in terms of non-carcinogenic risks than adults which may be related to their behavioral and physiological characteristics.
机译：由于城市化的快速发展，城市土壤中重金属的污染成为环境和风险对人类的主要问题之一。主要目标是确定25个城市土壤中六个重金属的污染，并通过对成年人和儿童的不同指数评估相关的健康风险。 Pb（47.48mg / kg），Cr（43.24mg / kg），Cu（40.64mg / kg），Zn（34.68mg / kg），Co（16.54mg / kg）和Ni（7.55mg / kg）超过地球化学背景值。 PB和Zn密切归因于交通源。地质累积指数（I-Geo）表明，土壤中的PB和CO在中等污染水平，而4％的土壤样品被CU适度地污染到严重的污染水平。富集因子（EF）表明，土壤在调查区呈现给严重的人为污染水平。对研究区域中人类的非致癌风险的重金属绝对来自CR和Pb，而致癌风险由CR控制，剩余的金属对当地人提供可能的风险。特别是，在非致癌风险方面的健康风险比成年人可能与其行为和生理特征有关。

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  • 来源
    《Ecotoxicology and Environmental Safety》 |2020年第5期|110406.1-110406.8|共8页
  • 作者

    Adimalla Narsimha; Chen Jie; Qian Hui;

  • 作者单位

    Changan Univ Sch Environm Sci & Engn 126 Yanta Rd Xian 710054 Peoples R China|Changan Univ Key Lab Subsurface Hydrol & Ecol Effects Arid Reg Minist Educ 126 Yanta Rd Xian 710054 Peoples R China;

    Changan Univ Sch Environm Sci & Engn 126 Yanta Rd Xian 710054 Peoples R China|Changan Univ Key Lab Subsurface Hydrol & Ecol Effects Arid Reg Minist Educ 126 Yanta Rd Xian 710054 Peoples R China;

    Changan Univ Sch Environm Sci & Engn 126 Yanta Rd Xian 710054 Peoples R China|Changan Univ Key Lab Subsurface Hydrol & Ecol Effects Arid Reg Minist Educ 126 Yanta Rd Xian 710054 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Heavy metals; Risk assessment; Geo-accumulation index (I-geo); Enrichment factor (EF); South India;

    机译：重金属;风险评估;地地层累积指数（I-Geo）;浓缩因子（EF）;印度南部;

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