Evaluation of a Possibility to Identify Port Pollutants Trace in Klaipeda City Air Pollution Monitoring Stations
Keywords:Klaipeda port, air pollution, NOx and SO2 monitoring in city
AbstractAttempts are made to determine whether it is possible to identify fractions of air pollutants emitted in Klaipeda port in the data recorded in the city air monitoring station. Two components, SO2 and NOx , controlled aboard ship since 2006 were chosen for evaluation. To determine the port influence, a due account was taken of the location of monitoring stations. For this purpose the sectors where port pollutants could enter the samplers of air monitoring stations were identified. For the assessment of a potential impact the ratio between the number of hours, when the stations fixed some concentrations of NOx and SO2, and the number of hours when the port pollutants were able to reach monitoring stations was taken. Analysis was carried out in three periods of the year 2007 (the whole year, in February and in July) and in the intervals of 24 hours; at 02-04 night time, at 07-09 morning peak and at 16-18 evening peak. Analysis of SO2 concentration data has shown that in 2007, and especially in July, the port influence on the stations area is possible, in February it is vaguely probable. NOx concentration analysis has shown that the level of this component in all cases, except only in February, is formed by other sources (motor transport).
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