Investigation of Environmental Air Pollution and Its Change Assessment in Šiauliai

Abstract

Air pollution is one of the main reasons of pulmonary diseases, malignant tumours, allergic and other chronic deceases. In 2003, with the help of a mobile laboratory, investigation on air pollution and its distribution in Ðiauliai city environment was accomplished. Measurements were performed once a month in exploratory positions deployed at 1 km intervals one from another. Average onetime annual pollutant concentration was measured, estimating one square kilometer. Concentration of CO in Ðiauliai surroundings varied from 0,5 mg/m³ to 5,8 mg/m³ or by 51 % of Ðiauliai area varied from 0,8 mg/m³ to 1,4 mg/m³. Concentration of NO 2 varied from 0,005 mg/m³ to 0,84 mg/m³ or by 57 % of the city area it varied from 0,010 mg/m³ to 0,020 mg/m³. Concentration of NO varied from 0,003 mg/m³ to 0,495 mg/m³. Concentration of SO 2 varied from 0,0015 mg/m³ to 0,012 mg/m³. Concentration of O 3 varied from 0,022 mg/m³ to 0,134 mg/m³. The total concentration of hydrocarbons varied from 1,5 ppm to 3,5 ppm. The highest level of pollution was observed in the central part of the city.

Study of consequent damage of metal pivotal structure on maintenance in polluted surroundings

“…At the time already is some actual data about pollute emissions, revealed in industry (Paulauskas, Klimas 2005;Vyzienė, Girgždys 2009), traffic (Lippa, Špakauskas 2002;Byčenkienė, Girgždienė 2006;Vaitiekūnas, Banaitytė 2007), agriculture (Butkus et al 2004), cattle-breeding (Kavolėlis, Bakutis 2004), forestry (Ozolinčius 2005;Gimbutaitė, Venckus 2008).…”

Variation of Pm10 Mass and Aerosol Number Concentrations in Šiauliai

“…A wide investigation and assessment of gaseous pollutants was performed in Šiauliai [17]. The authors showed that the highest pollution in the central part of the city was caused by motor-transport.…”