Research of quality of water in a coastal part of the Neva Bay

Abstract

The article presents the results of hydrochemical studies of the coastal zone of the Neva Bay in the Lomonosov region. The southern part - the coast of the Gulf of Finland from the mouth of the Narva River to St. Petersburg - is one of the coastal regions of the country that are most densely populated. Due to this, littoral is subject to a strong anthropogenic load. The shallow waters of the southern part of the Neva Bay until recently remained poorly understood. In 2016, according to the data of the NW MHME, the concentration of phenols in the central part of the Neva Bay did not exceed the permissible level. In the shallow coastal zone, such studies have not been conducted. The concentration of phenol and potential sources of pollution were determined. At the control point, concentrations that stably do not exceed the regulatory values are observed, which on average amounted to 0.8 MPC. Throughout the period, the limit set by the standard was repeatedly exceeded. Extreme excesses were noticed in the Lomonosov harbor area, where the port «Lomonosov» is located. A significant part of the phenols is formed in reservoirs during the transformation of petroleum hydrocarbons. The article also compares the obtained data with data on other parts of the eastern part of the Gulf of Finland. At the end of the work, conclusions were drawn based on the results of the analyzed data.