Document Type : Original Article
Authors
Office of Supervision and Monitoring, Department of Environment Semnan Provience, Iran
Abstract
Air pollution is one of the most important environmental problems in the last century that threatens human health. The purpose of this study is to investigate the average concentration of air pollutants, to detect the trend of pollutants change pattern, to identify high-risk months, air pollution index and the impact of neighboring provinces on the air of Semnan province in 1399. In this study, the data of air pollution measuring stations in the west of Semnan province were examined. Monthly changes of pollutants in the west of Semnan province showed that the maximum monthly of most pollutants occurs in the cold season. The maximum concentration of cold months is caused by various factors such as increasing atmospheric stability, temperature inversions, decreasing surface wind speed and using more heat sources. Vehicles also have less fuel combustion in cold conditions. In addition, a significant part of this pollution is accumulated from neighboring provinces due to wind and geographical location within the province and causes changes in air quality in the province. Also, population increase, public fleet wear, high traffic of urban vehicles, industrial use, dust centers and geographical location are also factors affecting air pollution in the west of Semnan province.
Keywords
- Air Pollution Measuring Stations
- Index Pollutants
- General Department of Environmental Protection
- Semnan Province
Main Subjects
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