scholarly journals Trend and Spatial Distribution of Air Particulate Matter Pollution in Dhaka City

1970 ◽  
Vol 34 (1) ◽  
pp. 33-48 ◽  
Author(s):  
Bilkis A Begum ◽  
Swapan K Biswas ◽  
M Nasiruddin
Keyword(s):  
Spatial Distribution ◽  
Particulate Matter ◽  
Fine Particles ◽  
Ambient Air ◽  
Quality Standard ◽  
Dhaka City ◽  
Air Particulate Matter ◽  
Air Particulate ◽  
Ambient Air Quality Standard ◽  
Academy Of Sciences

From the air particle (PM) collected from different locations of Dhaka city it has been foundthat about 30 - 50% of the PM10 mass (depending on location) is fine particles with aerodynamicdiameter less than 2.2 μm, which are mainly of anthropogenic origin and predominately fromtransport related sources. On the other hand, due to the meteorological reason and long-rangetransport during the wintertime, the PM concentrations remain much higher than the BangladeshNational Ambient Air Quality Standard (NAAQS).Key words: Spatial distribution; Air particulate matter; PollutionDOI: 10.3329/jbas.v34i1.5490Journal of Bangladesh Academy of Sciences, Vol.34, No.1, 33-48, 2010

scholarly journals Investigation of Sources of Particulate Matter from the Tajgaon Industrial Area, Dhaka

1970 ◽  
Vol 33 (1) ◽  
pp. 71-85 ◽  
Author(s):  
Bilkis A Begum ◽  
A Tazmin ◽  
KA Rabbani ◽  
Swapan K Biswas ◽  
M Nasiruddin
Keyword(s):  
Particulate Matter ◽  
Receptor Site ◽  
Ambient Air ◽  
Industrial Area ◽  
Quality Standard ◽  
Vehicular Emissions ◽  
Ambient Air Quality ◽  
Air Particulate ◽  
Ambient Air Quality Standard ◽  
Academy Of Sciences

Air particulate matter (PM) level and its constituents (black carbon, organic carbon and selected trace metals) were investigated from samples of a field campaign from Tajgaon Industrial area in Dhaka City.  The sampling was done from November 2006 to April 2007 using MiniVol Portable AirMetrics samplers. The samples were collected in two fractions of 0-2.5 µm and 0-10 µm sizes using two samplers simultaneously.  It has found that both PM10 and PM2.5 values were higher than the 24-h average Bangladesh national ambient air quality standard. From statistical analysis of the PM composition data coupled with reconstructed mass (RCM) technique, five major local sources could be identified those contributing to PM mass. Although PM samples were collected from an industrial area, vehicular emissions constituted the major source of air pollution and possibly some regional emission sources are also responsible for high PM2.5 and BC concentrations in Dhaka, especially during wintertime. It is also observed that PM2.5, PM10 and BC concentration levels at a receptor site largely depend on the meteorological conditions including rainfall, wind speed and wind direction. Key words: PM10, PM2.5, MiniVol sampler DOI: 10.3329/jbas.v33i1.2952 Journal of Bangladesh Academy of Sciences, Vol. 33, No. 1, 71-85, 2009

scholarly journals Involvement of TLR2 and TLR4 in inflammatory immune responses induced by fine and coarse ambient air particulate matter

2009 ◽  
Vol 86 (2) ◽  
pp. 303-312 ◽  
Author(s):  
Joanna Shoenfelt ◽  
Robert J. Mitkus ◽  
Rolf Zeisler ◽  
Rabia O. Spatz ◽  
Jan Powell ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Immune Responses ◽  
Ambient Air ◽  
Air Particulate Matter ◽  
Air Particulate
Sign in / Sign up

Export Citation Format

Share Document