The impact of seasonal varied human activity on characteristics and sources of heavy metals in metropolitan road dusts

The Science of the Total Environment
Cong MenZhenyao Shen

Abstract

Due to significant human activity, road dust is becoming contaminated by heavy metals in many cities. To comprehensively investigate the variation of contamination level and sources of heavy metals in road dust, 10 heavy metals in road dust samples from Beijing, China, in both summer and winter, were evaluated by spatial analysis using geographic information system (GIS) mapping technology and the positive matrix factorization (PMF) Model. Although the concentrations of some heavy metals between summer and winter had similarities, the differences of others and spatial distributions of heavy metals between summer and winter were considerable. The mean concentrations of As, Cd, Cr, Cu, and Fe were lower in winter, while those of Hg, Mn, Ni, Pb, and Zn were higher. According to the values of the Pollution Index (PI) and Nemerow Integrated Pollution Index (NIPI), there were no obvious differences between summer and winter, but the range between different sites in winter was nearly twice that of summer. Based on the PMF model, four sources of heavy metals in the dust samples were identified. Although the types of sources were consistent, the relative contributions of each source differed between summer and winter. Non-exhaust vehicl...Continue Reading

Citations

Oct 11, 2019·Environmental Science and Pollution Research International·Lili BaoZhongren Nan
Feb 18, 2020·Environmental Geochemistry and Health·Simon R N CheneryMichael J Watts
Apr 29, 2020·Archives of Environmental Contamination and Toxicology·Ibrahim H AlsohaimiNayef S Almuaikel
Oct 20, 2019·International Journal of Environmental Research and Public Health·Maja RadziemskaMartin Brtnicky
Nov 22, 2020·Environmental Science and Pollution Research International·Ruipeng TongXiaoyi Yang
Feb 16, 2021·Journal of Hazardous Materials·Zdzisław M MigaszewskiArtur Michalik
Jan 31, 2021·Environmental Science and Pollution Research International·Xing WangWeihong Chen
Mar 28, 2021·Environmental Science and Pollution Research International·M Safiur RahmanNarottam Saha
May 14, 2021·Ecotoxicology and Environmental Safety·Yanan LiJinglong Tang
Jun 3, 2021·International Journal of Environmental Research and Public Health·Giovanni GalloGabriella Fiorentino

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