Geochemical, mineralogical and magnetic characteristics of vertical dust deposition in urban environment

Péter Sipos, E. Márton, Zoltán May, Tibor Németh, Viktória Kovács Kis

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Studies on composition and distribution of dust deposition are necessary for the risk assessment of dust to atmospheric quality. We studied the vertical distribution pattern of dust and metal (Cu, Fe, Pb, Zn) deposition up to 33 m height in urban environment. Integrated geochemical, mineralogical and magnetic study of the seasonally sampled dust helped to specify our knowledge on the use of magnetic susceptibility for tracking its deposition. Harmful dust and metal deposition may occur even at great heights and at the low-traffic side of buildings. Re-suspension of local surface materials dominates the dust deposition primarily in summer and spring due to weather conditions, and it may overwrite the influence of recent anthropogenic activities on dust composition. The accepted air-flow models should be modified by taking the local conditions (weather, morphology, etc.) into account. All studied metals showed strong enrichment in the dust and could be characterized by similar vertical deposition pattern to dust. The total susceptibility was found to be much more useful proxy for tracking dust and metal deposition than mass-specific susceptibility. Using the former, potential errors arising from sampling practice of settled dust could be eliminated. The most important heavy-metal-bearing phases were iron oxides and clay minerals. Their different behavior during the dust deposition is reflected by the vertical metal distribution patterns. Clay minerals originate primarily from re-suspension and may be one of the most important sources of potentially mobile heavy metals in such materials.

Original languageEnglish
Pages (from-to)905-914
Number of pages10
JournalEnvironmental Earth Sciences
Volume72
Issue number3
DOIs
Publication statusPublished - 2014

Fingerprint

dust
Dust
Metals
metals
metal
clay minerals
Heavy Metals
Clay minerals
resuspension
Heavy metals
clay mineral
Suspensions
heavy metals
Bearings (structural)
weather
Oxide minerals
heavy metal
oxide, hydroxide, and oxyhydroxide minerals
iron oxides
magnetic susceptibility

Keywords

  • Dust re-suspension
  • Heavy metals
  • Total susceptibility
  • Urban dust
  • Vertical metal deposition

ASJC Scopus subject areas

  • Soil Science
  • Environmental Chemistry
  • Water Science and Technology
  • Pollution
  • Global and Planetary Change
  • Geology
  • Earth-Surface Processes

Cite this

Geochemical, mineralogical and magnetic characteristics of vertical dust deposition in urban environment. / Sipos, Péter; Márton, E.; May, Zoltán; Németh, Tibor; Kovács Kis, Viktória.

In: Environmental Earth Sciences, Vol. 72, No. 3, 2014, p. 905-914.

Research output: Contribution to journalArticle

Sipos, Péter ; Márton, E. ; May, Zoltán ; Németh, Tibor ; Kovács Kis, Viktória. / Geochemical, mineralogical and magnetic characteristics of vertical dust deposition in urban environment. In: Environmental Earth Sciences. 2014 ; Vol. 72, No. 3. pp. 905-914.
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