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Heavy metals and polycyclic aromatic hydrocarbons: Pollution and ecological risk assessment in street dust of Tehran

机译：重金属和多环芳烃：德黑兰街头粉尘的污染和生态风险评估

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摘要

50 street dust samples from four major streets in eastern and southern Tehran, the capital of Iran, were analyzed for metal pollution (Cu, Cr, Pb, Ni, Cd, Zn, Fe, Mn and Li). Hakanson's method was used to determine the Risk Index (Rl) and ecological risks. Amongst these samples, 21 were also analyzed for polycyclic aromatic hydrocarbons (PAHs). Correlation, cluster and principal component analyses identified probable natural and anthropogenic sources of contaminants. The dust had elevated concentrations of Pb, Cd, Cu, Cr, Ni, Zn, Fe and PAHs. Enrichment factors of Cu, Pb, Cd and Zn showed that the dust is extremely enriched in these metals. Multivariate statistical analyses revealed that Cu, Pb, Zn, Fe and PAHs and, to a lesser extent, Cr and Ni have common anthropogenic sources. While Mn and Li were identified to have natural sources, Cd may have different anthropogenic origins. All samples demonstrated high ecological risk. Traffic and related activities, petrogenic and pyrogenic sources are likely to be the main anthropogenic sources of heavy metals and PAHs in Tehran dust.
机译：分析了伊朗首都德黑兰东部和南部四个主要街道的50个街道灰尘样品的金属污染（铜，铬，铅，镍，镉，锌，铁，锰和锂）。 Hakanson的方法用于确定风险指数（R1）和生态风险。在这些样品中，还对21个样品的多环芳烃（PAH）进行了分析。相关性，聚类和主成分分析确定了可能的自然和人为污染源。灰尘中的Pb，Cd，Cu，Cr，Ni，Zn，Fe和PAHs浓度升高。 Cu，Pb，Cd和Zn的富集因子表明，这些金属中的粉尘极富。多元统计分析表明，铜，铅，锌，铁和多环芳烃以及少量的铬和镍是常见的人为来源。虽然确定了锰和锂的天然来源，但镉可能有不同的人为来源。所有样品均显示出高生态风险。交通和相关活动，成因和热源可能是德黑兰粉尘中重金属和多环芳烃的主要人为来源。

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  • 来源
    《Journal of Hazardous Materials》 |2012年第15期|p.9-17|共9页
  • 作者

    Mohsen Saeedi; Loretta Y. Li; Mahdiyeh Salmanzadeh;

  • 作者单位

    Environmental Research Laboratory, School of Civil Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran,Department of Civil Engineering, The University of British Columbia, 6250 Applied Science Lane, Vancouver, British Columbia V6T 1Z4, Canada;

    Department of Civil Engineering, The University of British Columbia, 6250 Applied Science Lane, Vancouver, British Columbia V6T 1Z4, Canada;

    Environmental Research Laboratory, School of Civil Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);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

    street dust; heavy metal; PAH; ecological risk; multivariate analysis;

    机译：街道灰尘重金属;PAH;生态风险;多元分析;

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