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Assessment of Heavy Metals and Color as Indicators of Contamination in Street Dust of a City in SE Spain: Influence of Traffic Intensity and Sampling Location

Author

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  • Pura Marín Sanleandro

    (Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain)

  • Antonio Sánchez Navarro

    (Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain)

  • Elvira Díaz-Pereira

    (Soil and Water Conservation Research Group, CEBAS-CSIC, 30100 Murcia, Spain)

  • Francisco Bautista Zuñiga

    (University Laboratory of Environmental Geophysics (LUGA), Center for Research in Environmental Geography, National Autonomous University of Mexico, 58190 Morelia, Mexico)

  • Miriam Romero Muñoz

    (Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain)

  • María José Delgado Iniesta

    (Department of Agricultural Chemistry, Geology and Pedology, Faculty of Chemistry, University of Murcia, 30100 Murcia, Spain)

Abstract

In the present work, a sampling grid of the urban core of the city of Murcia (South East Spain) was designed in order to analyze street dust, focusing on the contents of the heavy metals Cd, Cr, Cu, Ni, Pb, and Zn and their relationships with the color of the sample, the traffic pattern, and the location where they were sampled (sidewalks, ledges, and roads). The characterization of the samples was carried out by X-ray diffraction and scanning electron microscopy, whereas the heavy metals were extracted by acid digestion and determined by inductively coupled plasma mass spectrometry. The concentration (mg/kg) in urban dust of the city of Murcia was highest for Zn (653), followed by Cu (201) > Pb (177) > Cr (117) > Ni (51) >> Cd (0.5). The color expounded statistically significant differences with regard to the heavy metals, including the pollutant load. The same pattern was found when the classification variable was the traffic intensity, except in the case of Ni. The areas with a higher risk of contamination by heavy metals in the urban dust are the ledges of narrow city center streets with moderate traffic, where Zn and Pb seem to accumulate most greatly.

Suggested Citation

  • Pura Marín Sanleandro & Antonio Sánchez Navarro & Elvira Díaz-Pereira & Francisco Bautista Zuñiga & Miriam Romero Muñoz & María José Delgado Iniesta, 2018. "Assessment of Heavy Metals and Color as Indicators of Contamination in Street Dust of a City in SE Spain: Influence of Traffic Intensity and Sampling Location," Sustainability, MDPI, vol. 10(11), pages 1-14, November.
  • Handle: RePEc:gam:jsusta:v:10:y:2018:i:11:p:4105-:d:181553
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    References listed on IDEAS

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    1. Nasser M. Hamdan & Hussain Alawadhi & Najeh Jisrawi & Mohamed Shameer, 2018. "Characterization of Fine Particulate Matter in Sharjah, United Arab Emirates Using Complementary Experimental Techniques," Sustainability, MDPI, vol. 10(4), pages 1-17, April.
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    Cited by:

    1. María José Delgado-Iniesta & Pura Marín-Sanleandro & Elvira Díaz-Pereira & Francisco Bautista & Miriam Romero-Muñoz & Antonio Sánchez-Navarro, 2022. "Estimation of Ecological and Human Health Risks Posed by Heavy Metals in Street Dust of Madrid City (Spain)," IJERPH, MDPI, vol. 19(9), pages 1-16, April.
    2. Fuyao Chen & Yongjun Yang & Jiaxin Mi & Run Liu & Huping Hou & Shaoliang Zhang, 2019. "Effects of Vegetation Pattern and Spontaneous Succession on Remediation of Potential Toxic Metal-Polluted Soil in Mine Dumps," Sustainability, MDPI, vol. 11(2), pages 1-13, January.

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