Title Kritulių taršos tyrimas Šiaulių mieste /
Translation of Title Research on pollution in precipitation in Šiauliai.
Authors Eivienė, Rasa ; Tričys, Vaclovas
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Is Part of Jaunųjų mokslininkų darbai.. Šiauliai : Šiaulių universiteto leidykla. 2011, Nr. 3, p.119-124.. ISSN 1648-8776
Keywords [eng] precipitation ; pollution ; pH ; electrical conductivity ; total nitrogen ; total phosphorus ; chlorides ; suspended substances
Abstract [eng] The aim of the work is to investigate the pollution in precipitation in the city of Šiauliai. Precipitation quality was studied in different parts of the city of Šiauliai. Analyses of pH, electrical conductivity, total nitrogen, total phosphorus, bichromatic oxidation, chlorides, suspended and dissolved substances were carried out. The data presented are from analyses from four different periods of precipitation: 3 March 2011 – snow was taken from the ground on the day of snowfall; 10 March 2011 – snow was taken from the ground seven days after the snowfall (which occurred on March 3); 2 May 2011 – falling snow was collected directly into containers; 15 May 2011 – rainwater was collected directly into containers. It was found that the pollutant concentrations in precipitation in different areas of the city of Šiauliai are pretty well in line with the general trends of air pollution in the city. The most contaminated precipitation is at the city centre – at intersection of Draugystės Avenue and Dubijos Street and Pabaliai, Pramonės and Serbentų streets intersection district. Precipitation pH ranged from 5.8 to 7.7. The lowest value was found in rainfall in the southern district. Comparing the rainfall from different periods, the most polluted was snow taken from the ground seven days after snowfall: it was contaminated with chlorides and suspended materials. The highest concentrations of total nitrogen and bichromatic oxidation were found in the snow collected directly into containers.
Published Šiauliai : Šiaulių universiteto leidykla
Type Journal article
Language Lithuanian
Publication date 2011