In this study the road dusts (RDs) <1,000 μm from Maanshan City, China were characterized from the prospects of size fractionated pollution by heavy metals (HMs). Particulates with size <75 μm, 75–125 μm, 125–250 μm, 250–500 μm and 500–1,000 μm averagely accounted for 35.7±11.7%, 14.6±11.0%, 25.3±12.5%, 11.6±8.8% and 12.8±12.9% of the total weight, respectively. This result implies the gravimetric percentage was overall declined with increasing granular size, following gamma distribution function (p < 0.001). It was observed that the highest contents of Zn, Ni, Pb and Cd occurred with the fine RDs < 75 μm while Cu with these < 125 μm, suggesting HMs preferred to be associated with the fine particulates. Cu, Zn, Ni, Pb, Cr and Cd were present in RDs with bulk contents of 68±30 mg/kg, 285±122 mg/kg, 23±16 mg/kg, 53±21 mg/kg, 432+297 mg/kg and 0.56±0.39 mg/kg, which resulted in geo-accumulation index (lgeo) values as -1.04, 2.35, -2.38, 0.38, 1.54 and 0.18, respectively. Hence, it can be concluded that the RDs had only been significantly polluted by Zn. Person correlation analysis suggests those HMs ubiquitously present in RDs had size-dependent sources.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Particle Size Dependent Heavy Metals in Road Dusts from Maanshan City, China


    Additional title:

    KSCE J Civ Eng


    Contributors:
    Niu, Siping (author) / Song, Xiaolong (author) / Yu, Jianghua (author) / Wang, Xuan (author) / Liana, Jianjun (author)

    Published in:

    Publication date :

    2020-05-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    The shock wave ignition of dusts

    SICHEL, M. / BAEK, S. W. / KAUFFMAN, C. W. et al. | AIAA | 1985


    Heavy metals pollution of the road shoulders quantity, harmfulness, charakteristics

    Krieger, B. / Breitenstein, J. / Polish Road and Bridge Research Institute| German Road and Transportation Research Associations | British Library Conference Proceedings | 1993


    The shock wave ignition of dusts

    SICHEL, M. / BAEK, S. / KAUFFMAN, C. et al. | AIAA | 1984