Seasonal Chemical Characteristics of Atmospheric Aerosol Particles and its Light Extinction Coefficients over Pune, India

Pipal, Atar Singh; Tiwari, Suresh; Satsangi, P. Gursumeeran

doi:10.4209/aaqr.2015.08.0529

Cited by 8 publications

(3 citation statements)

References 66 publications

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“…A ratio of 6-8 is reported over northwestern India (viz., Ahmedabad, Mount Abu) and northern India (viz., Allahabad, Hisar) whereas a ratio less than 3 (Mumbai) is detected over western India and eastern India (viz., Bhubaneswar). Annual mean of the ratio of OC to EC obtained in the present study is 1.5 to 2 times higher than the ratios reported in Chatterjee et al (2012) and Panda et al (2016) over eastern India while this ratio is 2 times lower than the ratio reported over northern, northwestern and western India (Rengarajan et al, 2007;Ram et al, 2008;Rastogi and Sarin, 2009;Tiwari et al, 2013;Safai et al, 2014, Pipal et al, 2016. Inferences referred from the above studies showing a high OC to EC ratio is attributed to the predominance of biomass burning over the specific regions (Rengarajan et al, 2007;Ram et al, 2008;Rastogi and Sarin, 2009;Rastogi et al, 2015).…”

Section: Characteristics Of Organic and Elemental Carbonaceous Aerosol Fractionscontrasting

confidence: 61%

Chemical Characterization of Fine Atmospheric Particles of Water-Soluble Ions and Carbonaceous Species in a Tropical Urban Atmosphere over the Eastern Indo-Gangetic Plain

Priyadharshini

Verma

Chatterjee

et al. 2019

Aerosol Air Qual. Res.

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Ambient fine aerosols and their sources were evaluated in an eastern Indian megacity, Kolkata (KOL), from September 2010 to August 2011. A submicron aerosol sampler (SAS) with two stage stacked filter units (SFU) was devised for simultaneous but discrete collection of water-soluble inorganic ions (WSII) and carbonaceous aerosols (CA; elemental carbon (EC) and organic carbon (OC)). Characteristics of the WSII and CA were identified using ion chromatography and an OC-EC analyzer, respectively, adopting the Interagency Monitoring of PROtected Visual Environments (IMPROVE-A) protocol. The mean annual concentrations of the WSII showed a predominance of cations ( anions), consisting of Ca 2+ , Mg 2+ , and Na + (Cl -, NO 3 -, and SO 4 2-), with secondary aerosols (NH 4 + , NO 3 -, and SO 4 2-) and Ca 2+ each constituting 25% and 30%, respectively, of the total WSII (T WSII ). The highest mean monthly concentration of SO 4 2and NO 3 was observed during the winter month of February and the summer months of March and May, respectively. A pronounced peak in the monthly mean for the non-sea salt-K + (nss-K + ) concentration was noticed during October and April, implying the strong influence of biomass burning emissions during these months. Among the sea salt (SS), anthropogenic (AN), and dust (DT) sources of the T WSII , a predominant contribution from DT in August and from AN in November, April, and May was inferred. The mean annual concentration of OC was three times higher than that of EC, with 43% of it being secondary OC. Whereas the major sources of OC were inferred to be paved dust, coal combustion, and biomass burning, those of EC were industrial and motor-vehicle non-exhaust emissions, coal combustion, and motor vehicle exhaust.

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Section: Characteristics Of Organic and Elemental Carbonaceous Aerosol Fractionscontrasting

confidence: 61%

Chemical Characterization of Fine Atmospheric Particles of Water-Soluble Ions and Carbonaceous Species in a Tropical Urban Atmosphere over the Eastern Indo-Gangetic Plain

Priyadharshini

Verma

Chatterjee

et al. 2019

Aerosol Air Qual. Res.

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“…Present OC and EC concentrations of PM 2.5 were similar to those measured in Xiamen-Putian, Tianjin-China, Hong Kong and Seoul (27) (28)(29). Whereas, OC and EC concentration was lower than the Indian cities, those measured in the Indo Gangetic Plain (30), Jabalpur & Udaipur (31), Agra (32), Delhi(33) and Pune(34). WSOC is one of the major components of the total watersoluble composition of atmospheric aerosols, contributing to the number density of cloud condensation nuclei (CCN).…”

supporting

confidence: 69%

Pollution characteristics of organic, elemental carbon and water soluble organic carbon in PM2.5 a Tropical City Tiruchirappalli, Tamil Nadu, India

Marimuthu¹,

Sihabudeen²,

Wu³

et al. 2019

IJSRBS

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Airborne particulate matter has now become an issue in the global environment. In this study, the atmospheric PM 2.5 , organic carbon (OC), elemental carbon (EC) and water-soluble organic carbon (WSOC) were measured in the urban city of Tiruchirappalli, Tamil Nadu, India. The annual average concentration of PM 2.5 was observed in 76.1 μg/m 3 , Similarly, the seasonal average of PM 2.5 were 49.4 μg/m 3 in summer, 73.3μg/m 3 in Pre-monsoon, 86.1 μg/m 3 in winter and 87.9 μg/m -3 during monsoon respectively. The present study found that the annual average concentrations of PM 2.5 in Tiruchirappalli was significantly higher than the limit of 40 μg/m 3 prescribed in the National Ambient Air Quality Standards (Indian-NAAQS) and 10 μg/m 3 of that of the World Health Organization (WHO). While, the annual concentrations of OC, EC and WSOC were 8.9 μg/m 3 , 4.1 μg/m 3 and 3.1 μg/m 3 respectively. On seasonal average, the OC and EC concentrations ranked in the order of monsoon> winter>pre-monsoon > summer, which could be attributed to the combined effects of changes in local emissions and seasonal meteorological conditions. The secondary organic carbon (SOC) estimated by EC-tracer method was the highest in pre-monsoon (7.94 μg/m 3 ) followed by monsoon (6.60 μg/m 3 ), winter (6.04 μg/m 3 ) and summer (4.57 μg/m 3 ). Overall, results revealed that the mass concentration of PM2.5 bound carbonaceous fractions, and their contributions were varies by seasons. This study provides baseline information that can be exploited for policy formulation and mitigation strategies to control air pollution in south Indian urban cities.

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“…Pune is a major Information Technology (IT) hub along with automotive (domestic and international) manufacturing units. Several large and small scale glass, sugar, and forging industries also contribute to the growing criteria pollutant concentration at Pune [50]. The contribution of CO and NO 2 among the criteria pollutants, attributed to by sugar factories and heavy textiles industries in Solapur, led the MPI towards the mitigation category.…”

Section: Assessment Of Prioritized Air Quality Managementmentioning

confidence: 99%

Identification of Critical Locations for Improvement of Air Quality Developing a Prioritized Clean Air Assessment Tool (PCAT)

et al. 2023

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Fourteen Indian cities, including urban and rural locations, were chosen for the present study across India, with unhealthy air quality based on National Air Quality Index (NAQI > 100). However, it was found that NAQI values over the locations are driven by the undifferentiated mass concentration of particulate matter (PM, both PM10 and PM2.5) than other criteria pollutants. The PM2.5 and PM10 concentration during the winter violated the National Ambient Air Quality Standards (NAAQS) of India by two to five times at six urban locations, with the mean daily PM2.5 concentration averaged over the month; the the largest being at Patna (353 µg m−3) during the winter and lowest at Bengaluru (27 µg m−3) during the summer. The analysis of chemical species, in general, indicated NO2 (SO2, CO) as having a 25% to 70% (16% to 50%, 16% to 85%) increase in concentration from the summer to winter, which is adequately reflected in higher fuzzy scores during the winter. Thus, to provide a realistic approach to air quality management, the present study focuses on identifying priority-based locations requiring immediate mitigation measures by developing a Prioritized Clean Air Assessment Tool (PCAT). The tool utilizes a fuzzy-based algorithm to incorporate the cumulative effect of all six criteria pollutants, taking into consideration the severity of their expected health implications. Using PCAT, Delhi and Varanasi cities are identified for prioritized mitigation considering the NAAQS of India, unlike all cities (except Bengaluru) during the winter and nine out of fourteen cities during the summer, considering the NAQI. Using more stringent WHO guideline values in PCAT, six cities out of fourteen were identified requiring immediate mitigation during the winter and summer months; locations such as Solapur and Patna are identified to need season-specific mitigation measures during the summer and winter, respectively. The tool is simplistic, user-friendly, and quickly evaluates multiple locations simultaneously to provide priority sites.

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Seasonal Chemical Characteristics of Atmospheric Aerosol Particles and its Light Extinction Coefficients over Pune, India

Cited by 8 publications

References 66 publications

Chemical Characterization of Fine Atmospheric Particles of Water-Soluble Ions and Carbonaceous Species in a Tropical Urban Atmosphere over the Eastern Indo-Gangetic Plain

Chemical Characterization of Fine Atmospheric Particles of Water-Soluble Ions and Carbonaceous Species in a Tropical Urban Atmosphere over the Eastern Indo-Gangetic Plain

Pollution characteristics of organic, elemental carbon and water soluble organic carbon in PM2.5 a Tropical City Tiruchirappalli, Tamil Nadu, India

Identification of Critical Locations for Improvement of Air Quality Developing a Prioritized Clean Air Assessment Tool (PCAT)

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