Search Results - "Aggarwal, Shankar G"

A Technical Overview on Beta-Attenuation Method for the Monitoring of Particulate Matter in Ambient Air by Shukla, Kritika, Aggarwal, Shankar G.

“…Beta-attenuation technique is one of the widely used real-time technique for ambient particulate matter (PM) measurements since it allows continuous…”
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Investigation of the tracers for plastic-enriched waste burning aerosols by Kumar, Sudhanshu, Aggarwal, Shankar G., Gupta, Prabhat K., Kawamura, Kimitaka

“…To better identify the tracers for open-waste burning (OWB) aerosols, we have conducted aerosol sampling at 2 landfill sites, i.e., Okhla and Bhalswa in New…”
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Molecular distributions and stable carbon isotopic compositions of dicarboxylic acids and related compounds in aerosols from Sapporo, Japan: Implications for photochemical aging during long-range atmospheric transport by Aggarwal, Shankar G., Kawamura, Kimitaka

“…Molecular and stable carbon isotopic (δ13C value) compositions of dicarboxylic acids, ketoacids, and dicarbonyls in aerosol samples (i.e., total suspended…”
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Dicarboxylic acids and water-soluble organic carbon in aerosols in New Delhi, India, in winter: Characteristics and formation processes by Miyazaki, Yuzo, Aggarwal, Shankar G., Singh, Khem, Gupta, Prabhat K., Kawamura, Kimitaka

“…Day‐ and nighttime aerosol samples were collected at an urban site in New Delhi, India, in winter 2006–2007. They were studied for low molecular weight…”
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Size distributions of n-alkanes, fatty acids and fatty alcohols in springtime aerosols from New Delhi, India by Kang, Mingjie, Fu, Pingqing, Aggarwal, Shankar G., Kumar, Sudhanshu, Zhao, Ye, Sun, Yele, Wang, Zifa

“…Size-segregated aerosol samples were collected in New Delhi, India from March 6 to April 6, 2012. Homologous series of n-alkanes (C19C33), n-fatty acids…”
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Theoretical and Experimental Evaluation of a Compact Aerosol Wind Tunnel and its Application for Performance Investigation of Particulate Matter Instruments by Patel, Prashant, Aggarwal, Shankar G.

“…In this study, we developed a compact low-speed wind tunnel. First, we computationally analysed the flow quality of different wall shapes for the contraction…”
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Comparison of abundances, compositions and sources of elements, inorganic ions and organic compounds in atmospheric aerosols from Xi'an and New Delhi, two megacities in China and India by Li, Jianjun, Wang, Gehui, Aggarwal, Shankar G., Huang, Yao, Ren, Yanqin, Zhou, Bianhong, Singh, Khem, Gupta, Prabhat K., Cao, Junji, Zhang, Rong

“…Wintertime TSP samples collected in the two megacities of Xi'an, China and New Delhi, India were analyzed for elements, inorganic ions, carbonaceous species…”
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Molecular Markers of Secondary Organic Aerosol in Mumbai, India by Fu, Pingqing, Aggarwal, Shankar G, Chen, Jing, Li, Jie, Sun, Yele, Wang, Zifa, Chen, Huansheng, Liao, Hong, Ding, Aijun, Umarji, G. S, Patil, R. S, Chen, Qi, Kawamura, Kimitaka

“…Biogenic secondary organic aerosols (SOA) are generally considered to be more abundant in summer than in winter. Here, polar organic marker compounds in urban…”
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Measurement of Black Carbon in Delhi: Evidences of Regional Transport, Meteorology and Local Sources for Pollution Episodes by Malik, Arpit, Aggarwal, Shankar G., Ohata, Sho, Mori, Tatsuhiro, Kondo, Yutaka, Sinha, Puna Ram, Patel, Prashant, Kumar, Baban, Singh, Khem, Soni, Daya, Koike, Makoto

“…Measurement of particulate matter (PM) constituent such as black carbon (BC) over urban sites is critically important owing to its adverse health and climate…”
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Hygroscopic Properties of Water-Soluble Counterpart of Ultrafine Particles from Agriculture Crop-Residue Burning in Patiala, Northwestern India by Alang, Ashmeet Kaur, Aggarwal, Shankar G., Singh, Khem, Johri, Prabha, Agarwal, Ravinder, Kawamura, Kimitaka

“…To determine the link between hygroscopicity and the constituent chemical composition of real biomass-burning atmospheric particles, we collected and analyzed…”
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Comparisons of GC-Measured Carboxylic Acids and AMS m/z 44 Signals: Contributions of Organic Acids to m/z 44 Signals in Remote Aerosols from Okinawa Island by Kunwar, Bhagawati, Torii, Kazuhiro, Aggarwal, Shankar G., Takami, Akinori, Kawamura, Kimitaka

“…An intercomparison study was conducted to evaluate the contributions of carboxylic acids to m/z 44 (COO+) signals obtained by an on-line aerosol mass…”
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Size-segregated measurements of cloud condensation nucleus activity and hygroscopic growth for aerosols at Cape Hedo, Japan, in spring 2008 by Mochida, Michihiro, Nishita-Hara, Chiharu, Kitamori, Yasuyuki, Aggarwal, Shankar G., Kawamura, Kimitaka, Miura, Kazuhiko, Takami, Akinori

“…Size‐segregated measurements of cloud condensation nucleus (CCN) activity and hygroscopic growth were performed simultaneously for sulfate‐rich aerosols at…”
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On the techniques and standards of particulate matter sampling by Patel, Prashant, Aggarwal, Shankar G.

“…Air pollution and its limits are regulated by the environmental protection agency of an individual country according to their National Ambient Air Quality…”
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Time-resolved variations in the distributions of inorganic ions, carbonaceous components, dicarboxylic acids and related compounds in atmospheric aerosols from Sapporo, northern Japan during summertime by Pavuluri, Chandra Mouli, Kawamura, Kimitaka, Kikuta, Motomi, Tachibana, Eri, Aggarwal, Shankar G

“…To better understand time-resolved variations of water-soluble organic aerosols in the atmosphere, we collected atmospheric particles (TSP) every 3 h during…”
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Comparative measurement of CO2, CH4 and CO at two traffic interjunctions having inflated vehicular flow in Delhi by Komal, Soni, Daya, Singh, Khem, Aggarwal, Shankar G.

“…Vehicular emissions are considered one of the major anthropogenic sources of greenhouse gases and poor air quality in metropolitan cities. This study aims to…”
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A case study for in-house method validation of gas chromatography technique using class-1 calibration gas mixtures for greenhouse gases monitoring by Komal, Soni, Daya, Aggarwal, Shankar G.

“…In this study, analytical method validation has been done for the measurement of carbon dioxide/nitrogen (CO 2 /N 2 ) and methane/nitrogen (CH 4 /N 2 )…”
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Water-soluble dicarboxylic acids, oxoacids and α-dicarbonyls in the tropical aerosols in coastal megacity Mumbai: molecular characteristics and formation processes by Alang, Ashmeet Kaur, Aggarwal, Shankar G., Singh, Khem, Soni, Daya, Kawamura, Kimitaka

“…Daytime and nighttime PM 10 samples were collected during summer (June) and winter (February) at a representative urban site in Mumbai, located on the western…”
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Thermophoretic Deposition of Particles in Laminar and Turbulent Tube Flows by Tsai, Chuen-Jinn, Lin, Jyh-Shyan, Aggarwal, Shankar G., Chen, Da-Ren

“…Thermophoretic deposition of aerosol particles (particle diameter ranges from 0.038 to 0.498 μm) was measured in a tube (1.18 m long, 0.43 cm inner diameter,…”
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Atmospheric Brown Carbon: Sources, Optical Properties, and Chromophore Composition by Alang, Ashmeet Kaur, Aggarwal, Shankar G.

“…Brown carbon (BrC) constitutes a significant portion of organic carbon (OC) and exerts a substantial influence on air quality, atmospheric chemical processes,…”
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Theoretical and field evaluation of a PM2.5 high-volume impactor inlet design by Patel, Prashant, Aggarwal, Shankar G., Tsai, Chuen-Jinn, Okuda, Tomoaki

“…A PM2.5 high-volume impactor (HVI) sampler is developed, which has a flow rate of 1130 L per minute (lpm) (1.13 m3/min) and in it, the filter size used is of…”
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