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Associations of Trace Gases and Meteorological Parameters and Particulate Matter with Ozone under Smog Conditions | ||
Pollution | ||
مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 15 اسفند 1403 | ||
نوع مقاله: Original Research Paper | ||
شناسه دیجیتال (DOI): 10.22059/poll.2025.383221.2585 | ||
نویسندگان | ||
Nishi Srivastava* 1؛ Apurba Tewari2؛ Anik Das2 | ||
1Birla Institute of Technology, Mesra, Ranchi | ||
2Department of Physics Birla Institute of Technology, Mesra Ranchi 835215, India | ||
چکیده | ||
This work investigated the connection between O3 and other pollutants and meteorological conditions during a smog episode in Delhi. Ozone concentrations varied from site to site (150~269µg/m3). A significant negative correlation has been observed between O3 and its precursor gases. Wind speed showed a positive correlation, but high wind usually dilutes the pollutant concentrations. Thus, a positive correlation with wind speed represents ozone transport from other locations to observational sites. The high ratio of PM2.5 to PM10 indicates a predominance of human involvement. Toluene and benzene ratios(T/B) are estimated to understand the nature of emission sources and the lifetime of pollution. The analysis of the benzene and toluene fractions indicates anthropogenic air masses' dominance. Very high T/B values at several sites indicated that benzene was emitted from vehicular emission while toluene was from point sources. Ozone formation potential analysis showed that toluene and p-xylene are the prime contributors to ozone. | ||
کلیدواژهها | ||
Air Pollution؛ Smog؛ Ozone؛ VOC؛ Trace Gases | ||
آمار تعداد مشاهده مقاله: 80 |