Temporal variability of the elemental composition in urban street dust.
Urban Street dust is recognized as a source of urban air and runoff degradation. This paper takes a preliminary step toward a better understanding of temporal variability in street dust chemistry and of the controlling mechanisms. Street dust samples, collected over four seasons in the city of Hamilton, Canada, show a variability dependent on element and source-anthropogenic sources exhibiting the greatest temporal variability. In addition, elements attributed to common sources exhibit similar temporal patterns. The use of 'generic' or even one-time samples may seriously misrepresent the elemental make-up of urban street dust. Based on the samples collected in this study, a number of questions/insights are posed to further the study of street dust temporal variability.
Atmospheric Science Division, Air Quality Unit, Illinois State Water Survey, 2204 Griffith Dr., 61820, Champaign, IL, USA.
S J
SJ
Vermette
K N
KN
Irvine
J J
JJ
Drake