Morphology, aspect ratio, and surface elemental composition of primary aerosol particles at urban region of India.

The PM and PM particles were characterized in terms of morphology (size and shape) and surface elemental composition at two different (traffic and industrial) locations in urban region of India and further linked to different morphological defining parameters. The overall PM and PM showed significant daily variability indicating higher PM as compared to PM. PM/PM ratio was found to be 0.

Revisiting the atmospheric particles: Connecting lines and changing paradigms.

Historically, the atmospheric particles constitute the most primitive and recent class of air pollutants. The science of atmospheric particles erupted more than a century ago covering more than four decades of size, with past few years experiencing major advancements on both theoretic and data-based observational grounds. More recently, the plausible recognition between particulate matter (PM) and the diffusion of the COVID-19 pandemic has led to the accretion of interest in particle science.

Assessing effectiveness of air purifiers (HEPA) for controlling indoor particulate pollution.

The present study deals with an evaluation of the air purifier's effectiveness in reducing the concentration of different sized particulate matter (PM) and ions in the real-world indoor environment. Two types of air purifiers (API and APII) mainly equipped with High-Efficiency Particulate Air (HEPA) filters that differed in other specifications were employed in general indoor air and the presence of an external source (candles and incense). The gravimetric sampling of PM was carried out by SKC Cascade Impactor and further samples were analyzed for determining ions' concentration while real-time monitoring of different sized PM was done through Grimm Aerosol Spectrometer (1.

Particle size dynamics and risk implication of atmospheric aerosols in South-Asian subcontinent.

Presented here are size-resolved aerosol measurements conducted using cascade impactor set at breathing zone in indoor-outdoor residential microenvironments. PM contributed about 64-80% of PM in which over 29% of mass was shared by PM Total PM concentration varied from 261 ± 22 μg/m (indoors) to 256 ± 64 μg/m (outdoors) annually; whilst summer and monsoon demonstrated 1.2- and 1.

Indoor-outdoor association of particulate matter and bounded elemental composition within coarse, quasi-accumulation and quasi-ultrafine ranges in residential areas of northern India.

Attempts have been made to comprehend size distribution pattern of Particulate Matter (PM) and associated elemental concentration within coarse (2.5-10μm), quasi-accumulation (q-Acc) (0.25-2.