Influence of filling stations on the ecological condition of the atmosphere of urban agglomeration (on the example of Arkhangelsk)

Abstract

The article assesses the effect of filling stations on the content of polyaromatic hydrocarbons (PAHs) in the snow cover of urban agglomerations. Snow cover is a good depositing matrix of organic pollutants and serves as an indicator of the state of the atmosphere. During the work, snow samples were taken at about two filling stations - within the city limits and outside the city limits. The samples carried out a quantitative chemical analysis of 14 PAHs and their total concentration. It was determined that the total concentration of PAHs in the snow cover does not depend on the distance from the filling station, the pollution of the atmosphere of PAH occurs regardless of the economic activity of the filling station. The maximum total concentration of PAHs is 283 ng / kg at one of the points near the filling station located in the city. According to the results of the research, it can be concluded that the pollution of the atmosphere of Arkhangelsk occurs in places of traffic congestion and is significantly lower than other cities of Russia (13 times lower than in Moscow). 83% of polyaromatic hydrocarbons in the snow of Arkhangelsk account for phenanthrene, fluoranthene, pyrene, chrysene, benz(b)fluoranthene and naphthalene. Benz(a)pyrene is 4% of the total PAH content. In order to study the ecological status of areas, it is necessary to investigate a complex of 14 PAHs. The content of benz(a)pyrene and naphthalene in snow samples taken in the city of Arkhangelsk does not exceed the MPC.