Experimental Investigation and Numerical Analysis of Propagation Process for Snow Cover Pollution Near a Major Highway
V. F. Raputa1, V. V. Kokovkin2, S. V. Morozov3
1 Institute of Computational Mathematics and Mathematical Geophysics, Siberian Branch of the Russian Academy of Sciences
2 Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences
3 Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences
raputa@sscc.ru
Keywords: motor transport, snow cover, aerosol pollution, chemical composition, polyaromatic hydrocarbons, lead, numerical modelling
Pages: 61-68
Abstract
Snow samples have been taken from ten points according to a special route at a distance of 150 m from the Sovetskoye highway of the Novosibirsk City, in February 2008. The studies on this object are being carried out by the authors for more than 10 years running. With the use of two sample preparation schemes, the major inorganic and organic components of automobile emission chemical composition were determined. The analysis of data concerning almost all the parameters under investigation indicates monotonously decreasing pollutant concentrations with an increase in the distance from the road. A model with a small number of parameters has been developed to estimate the precipitation of a polydisperse contaminant resulting from a linear source. Approbation of the model constructed has been performed using route observations data for snow cover aerosol pollution with polyaromatic hydrocarbons, macro components and heavy metals. Considerable composition heterogeneity of the precipitating aerosol contaminants has been demonstrated. A high level of PAH concentration in the snow was revealed both in the vicinity of and at a long distance from the road, which indicates considerable atmospheric pollution with fine-dispersed components.
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