Spatial and temporal variation in magnetic properties of street dust in Lanzhou City, China

Guan Wang, Dun Sheng Xia*, Xiu Ming Liu, Fa Hu Chen, Ye Yu, Li Ping Yang, Jian Hui Chen, Ai Feng Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


Urban environmental problems are of increasing concern. Lanzhou is a large industrial city in Northwest China. Street dust samples representing different temporal and spatial scales were collected for magnetic properties study. Magnetic measurements indicate a high concentration of magnetic minerals in Lanzhou street dust, dominated by pseudo-single domain (PSD) magnetite. The concentration of magnetic materials is distinctly high in winter and spring, low in autumn. Similarly, higher concentrations associated with heavy industry, concentrated residential development, and vehicular traffic suggest mixed contributions of magnetic material from both anthropogenic and natural sources. xIf and SOFT% are effective magnetic parameters that denote seasonal differences among magnetic properties in street dust, convenient and economical methods for monitoring street dust pollution.

Original languageEnglish
Pages (from-to)1913-1923
Number of pages11
JournalChinese Science Bulletin
Issue number12
Publication statusPublished - Jun 2008
Externally publishedYes


  • Environmental magnetism
  • Lanzhou
  • Street dust
  • Urban pollution


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