Associations of Trace Gases and Meteorological Parameters and Particulate Matter with Ozone under Smog Conditions | ||
| Pollution | ||
| دوره 11، شماره 3، پاییز 2025، صفحه 758-780 اصل مقاله (7.44 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2025.383221.2585 | ||
| نویسندگان | ||
| Nishi Srivastava* ؛ Apurba Tewari؛ Anik Das | ||
| Department 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 | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 626 تعداد دریافت فایل اصل مقاله: 509 |
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