Matisovs, Ivars

2015, Andris Skromulis, Matisovs, Ivars, Gotfrīds Noviks

Paper presents results of air ionization level measurements made in past 3 years in Rezekne city. The concentrations of positive and negative air ions with mobility factor k ≥ 0,4 cm2/V·s were obtained by portative air-ion counter “Sapfir-3M” (Russia) in 8 parts of the city thrice per day. The approximate interconnections among ionization and chemical and mechanical pollution of air were analyzed. The complex evaluation of long – term air pollution impact on different parts of city is carried out using methods of lichenoindication and air ion research.

2009, Gotfrīds Noviks, Teirumnieks, Edmunds, Natālija Lemešenoka, Matisovs, Ivars, Teirumnieka, Ērika, Ziedonis Miklašēvičs

Brownfields (contaminated or degraded territories) significantly pollutes environment, form derelict landscapes and affects people’s security and health. Formation of these sites depends on many factors such as bad industrial practise and economy, inadequate legislation, wastewater and waste management etc. Inventory and evaluation of these sites in Latvia is carried out according to Regulations issued by the Latvia Cabinet of Ministers. The sites are characterised with parameters which differs from accepted in the other European countries. For example, primary classification indicator in Latvia is a degree of ground and soil pollution in these fields and as a secondary factor – presence of destroyed and abandoned buildings. The paper presents the results of investigation the situation on brownfields in Latvia, especially in Rezekne city, analyses the reasons of their formation and develops recommendations for intensification revitalization process of brownfields.