Abstract

TAIWO, Adewale M.. Characteristics of particulate matter collected at an urban background site and a roadside site in Birmingham, United Kingdom. Atmósfera [online]. 2017, vol.30, n.4, pp.323-335. ISSN 0187-6236.  https://doi.org/10.20937/atm.2017.30.04.04.

This study was conducted to investigate the compositional characteristics of particulate matter (PM) collected both at an urban background site (Elms Road observational site, EROS) and a roadside site (Bristol Road observational site, BROS). PM samples were collected at the receptor sites between March 28 and April 11, 2012. Observed parameters included water-soluble ions (Cl-, NO- 3, SO4 2-, Na+, NH4 +, K+, Mg2+, Ca2+) and trace metals (V, Al, Cr, Mn, Fe, Zn, Cu, Sb, Ba, Pb). Results showed higher concentrations of NO- 3, NH4 +, Al and Fe at BROS than EROS regarding PM2.5; and Cl-, NO- 3, Na+, K+ and Fe regarding PM2.5-10, indicating roadside increments. The ionic and metal components of PM2.5 at EROS constituted 44 and 7% of the total measured PM mass, respectively. The proportions of these species were 46 and 8% at BROS. For PM2.5-10, water-soluble ions and trace metal components represented 42 and 12% at EROS, and 56 and 11% at BROS.

Keywords : Particulate matter; roadside increment; water-soluble ions; trace metals.

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