Status of atmospheric particulate matter and black carbon concentration at Ashuganj in Brahmanbaria
| Autor: | Badiuzzaman Khan, Sumaya Baitun, Bilkis Ara Begum |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Air pollution
lcsh:S Carbon black Atmospheric dispersion modeling Particulates Seasonality medicine.disease_cause medicine.disease Reflectivity Atmospheric particulate matter PM2.5 PM10 Black Carbon Ambient air lcsh:Agriculture Environmental chemistry medicine Environmental science Air quality index |
| Zdroj: | Journal of the Bangladesh Agricultural University, Vol 16, Iss 2, Pp 232-236 (2018) |
| ISSN: | 2408-8684 1810-3030 |
| Popis: | Atmospheric particulate matter (PM) samples (both PM 10 and PM 2.5 ) were collected simultaneously from Midland Power Company Limited at Ashuganj, in Brahmanbaria to monitor the seasonal fluctuations of particulate matter and black carbon (BC) concentrations from air samples. Total eight samples were collected from January 2016 to December 2017 using two Air Metrics MiniVol samplers and the quantity of PM 2.5 and PM 10 was detected by weighing the filters before and after exposure. The concentration of PM (PM 2.5 and PM 10 ) and BC were analyzed at the laboratory of Chemistry Division, Atomic Energy Centre, Dhaka . The black carbon concentration from both PM 2.5 and PM 10 samples were also determined by reflectance measurement. The concentrations of PM 2.5 varied from 12.2–145 μgm −3 where mean value was 67.09 μgm −3 . The mean concentration of PM 10 was 103.64 μgm −3 whereas the concentration ranged from 20.5–220 μgm −3 . The ratios of PM 2.5 /PM 10 fluctuated during different seasons, winter showed higher concentration and summer showed relatively lower concentration for both PM 2.5 and PM 10 . Atmospheric dispersion due to increased wind speeds and wider mixing layer heights are recognized to be responsible for the lower PM concentrations in warmer months. The concentrations of BC in PM 2.5 also varied from 2.44–33.4 μgm −3 and BC in PM 10 varied from 4.51–57.2 μgm −3 , respectively. The concentrations of particulate matter exceeded the Bangladesh National Ambient Air Quality Standard. J. Bangladesh Agril. Univ. 16(2): 232-236, August 2018 romij 16.00 Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:8.0pt; mso-para-margin-left:0in; line-height:107%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri",sans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} |
| Databáze: | OpenAIRE |
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