Attributes of aerosol bound water soluble ions and carbon, and their relationships with AOD over the Brahmaputra Valley

In-Depth Analysis of Physicochemical Properties of Particulate Matter (PM10, PM2.5 and PM1) and Its Characterization through FTIR, XRD and SEM–EDX Techniques in the Foothills of the Hindu Kush Region of Northern Pakistan

“…Concentration of carbon in the ambient environment is because of incomplete burning of fuels and biomass [71]. The finding of C along with K and S is the sign of soot particles, its production sources include agricultural burning, wood burning and the burning of organic fuels such as biomass, diesel, coal and oil [72,73]. Carbonaceous particles have diverse morphologies.…”

“…In PM 2.5 , the recorded elements were O, C, Si, B, Ca, Al, N, Fe, Mg, S, Na, K and Mo, whereas in the samples of PM 10 , we noted C, O, Si, Na, Cl, Al, K, Fe, Ca and Mg. Our analysis indicates that C and O are greater in percentage. The finding of potassium (K), sulfur (S) and carbon (C) in the atmosphere was due to biomass burning, diesel generators, vehicular emissions, waste incineration, wood burning or agricultural burning in household activities and brick kiln activities in the surrounding areas [72,92,93]. The detection of other elements such as oxygen (O), iron (Fe), silicon (Si), magnesium (Mg), calcium (Ca) and sodium (Na) was due to clay minerals caused by dust re-suspension (wind blowing, vehicular trafficking and building construction) [55,94].…”

Ambient ozone over mid-Brahmaputra Valley, India: effects of local emissions and atmospheric transport on the photostationary state

“…The wind directions with respect to high ozone and the direction with respect to high NO 2 were found to be different, which may be inferred as transport of O 3 to the site. There are previous reports that during the winter and pre-monsoon seasons, the region receives air mass trajectories that originated and/ or passed over the IGP (Bhuyan et al, 2016;Deka et al, 2020) and bring high pollutant concentrations to the region (Ommi et al, 2017;Rahman et al, 2020). The HYSPLIT air mass trajectories reaching the site were weighted with the concentrations of O 3 , and the CWTs were computed (Fig.…”

Meteorological Influence and Chemical Compositions of Atmospheric Particulate Matters in an Indian Urban Area

“…Combustion of coal and oils in various anthropogenic activities such as brick kilns, cement factories, petroleum oil refineries, tea processing industries, vehicular emissions, and biomass burning in the locality and remote aerosols from the Indo-Gangetic plain, mainland India, west India, and other parts of Asia are the important sources of anthropogenic carbonaceous aerosol in this area. − Several satellite-based studies were performed in NER India; , however, proper ground-based observation and physicochemical characterization of the ambient particulate matters and their relationship with local as well as regional meteorology have not been conducted at a significant level. Bhuyan et al , studied some of the chemical properties of PM 10 and source apportionment reporting the contributions from biomass burning, coal burning, petroleum refining, vehicular emission, and crustal dust in this region. Long-range transport and meteorology could also play a major role in the total load of aerosol in the region. , In the present study, the advanced-level physico-chemical analysis of PM 2.5 is performed in order to understand the main chemical components during winter high-loading in the Jorhat urban area of NER, and thereby determining the source contributions of these components and the impacts of meteorological conditions.…”

“…9−11 Several satellite-based studies were performed in NER India; 11,12 however, proper ground-based observation and physicochemical characterization of the ambient particulate matters and their relationship with local as well as regional meteorology have not been conducted at a significant level. Bhuyan et al 13,14 studied some of the chemical properties of PM 10 and source apportionment reporting the contributions from biomass burning, coal burning, petroleum refining, vehicular emission, and crustal dust in this region. Longrange transport and meteorology could also play a major role in the total load of aerosol in the region.…”