Aim: To evaluate data of air quality in the year 2004 in Düzce by days, hours and seasons. Method: In this study, sulfur dioxide, particulate matter levels, wind speed and wind direction values of Düzce city center obtained from the web page of Ministry of Envoriment and Planning between 1 January -31 December 2014 were studied. Data were examined by on the time of hours, days, days of the week, months and seasons. Results: Annual average PM10 was 106,42±102 μg/m3 , SO2 concentration was 6,15±5,39 μg/m3. Winter PM10 and SO2 measurements were significantly higher than summer season. Wind speed in the summer season had a higher average than the winter season. Highest average PM10 was at November 189,4 ± 171,8 μg/m3. The lowest PM10 was at June 58,0±24,5 μg/m3. The highest average wind speed was at June, the lowest average wind speed is at December. PM10 and SO2 measurements were positively correlated with wind direction, shows a negative correlation with wind speed. The highest PM10 measurements in the summer season were on Thursdays, in the winter season on Wednesdays. The lowest PM10 measurements both in two seasons were on Sundays. Average PM10 was significantly higher on weekdays than weekends. The highest PM10 value of 146,6 ± 131,3 μg/m3 was measured at 23.00. The lowest PM10 value of 73,8±55,9 μg/m3 was measured at 15.00. Conclusion: There is air pollution in Düzce both in the summer and winter. Continuous monitoring of the emissions of existing establishments in the industrial pollution control should be provided. The high PM10 measurements in the evening may be due to traffic during the day and fuel use for heating purposes. Widespread use of natural gas and creating socially conscious individual measures can be effective in reducing air pollution.
Key words: Air pollution, Particulate Matter , Seasonal Variation. Article Language: Turkish English
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