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Abstract

Results of testing air quality in the vicinity of Gliwice transport routes arc presented in the paper. Assessment of air contamination with nitrogen dioxide from motor transport, for typical conditions dominating in big cities of high transit movement without any ring roads was the studies objective. Presented results will be used in the future to determine the impact of opening the ring road on air quality in the city. In the studies, the passive method of sampling, with further application of spectrophotometric technique to determine nitrogen dioxide concentration, was used. Average annual nitrogen dioxide concentrations were based on average daily concentrations measured from July 2004 to June 2005 at 16 measuring points. As they meet conditions for random distribution of measuring days and cover the measuring time, they were treated as average concentrations of nitrogen dioxide in a calendar year and were compared with a permissible concentration to make an assessment of air quality..
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Authors and Affiliations

Magdalena Żak
Anna Loster
Barbara Kozielska
Edyta Melaniuk-Wolny
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Abstract

Thirteen fractions of ambient dust were investigated in Zabrze, a typical urban area in the central part of Upper Silesia (Poland), during a heating season. Fifteen PAH and Cr, Mn, Co, Ni, As, Se, Cd, Pb contents of each fraction were determined. The dust was sampled with use of a cascade impactor and chemically analyzed with an energy dispersive X-ray fluorescence spectrometer (PANalytical Epsilon 5) and a gas chromatograph with a flame ionisation detector (Perkin Elmer Clarus 500). The concentrations of PM1 and the PM1-related PAH and elements were much higher than the ones of the coarse dust (PM2.5-10) and the substances contained in it. The concentrations of total PAH and carcinogenic PAH were very high (the concentrations of PM1-, PM2.5-, and PM10-related BaP were 16.08, 19.19, 19.32 ng m-3, respectively). The municipal emission, resulted mainly from hard coal combustion processes, appeared to be the main factor affecting the air quality in Zabrze in winter.

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Authors and Affiliations

Wioletta Rogula-Kozłowska
Barbara Kozielska
Krzysztof Klejnowski
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Abstract

Polycyclic aromatic hydrocarbons (PAI-ls) are persistent organic pollutants, ubiquitous in the whole environment. They are relatively well known and are still of interest due to their well documented carcinogenic and mutagenie properties. In ambient air of urban regions they mostly occur as adsorbed to particles of suspended dust. The richest in these compounds and therefore most hazardous to humans, fraction of dust is the fraction of the finest particles. The paper presents results of investigations of dust sampled with use of an impactor Dekati PM10 in Zabrze, a site typical of Upper Silesian conditions. While sampling, the impactor segregates sampled particles into four fractions by their aerodynamic diameters. Sixteen PAHs were determined in each fraction chromatographically. PAH content in the fraction of the finest particles, i.e. in PM1, was of particular interest.
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Authors and Affiliations

Krzysztof Klejnowski
Barbara Kozielska
Andrzej Krasa
Wioletta Rogula-Kozłowska
ORCID: ORCID

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