• Balvinder Talwar
• Avinash Bharati

Particulate matter (PM) is one of the most common air pollution entities and is known to have significant impacts on environment and human health. PM exposure is commonly monitored as mass concentration of PM10 or PM2.5, although increasing toxicity with decreasing aerodynamic diameter has been reported. Particulate matter whose aerodynamic diameter is less than1µm is called PM1 (submicron particulate matter). Up till now, there is huge number of investigations performed to evaluate mass concentrations and chemical profiles of ambient PM2.5/PM10 particles. There are only few reports on source apportionment studies of PM1. Data on levels and speciation of PM1 all over the world is very scarce. Ambient air monitoring needs to be supplemented by studies to quantify the contribution made by different sources and to assess the impacts on damage cost (including public health consequences) in order to prioritize the cost-effective interventions. Present review highlights mass concentration of PM1 with their possible sources, signifying the need for establishing standards for PM1.

Aerosol, PM1, PAH, Source apportionment, Water soluble inorganic ions.

"PM1 AS TOXIC AIR POLLUTANT: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.757-761, May-2018, Available :http://www.jetir.org/papers/JETIR18IC134.pdf

"PM1 AS TOXIC AIR POLLUTANT: A REVIEW", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp757-761, May-2018, Available at : http://www.jetir.org/papers/JETIR18IC134.pdf