Analysis of Black Carbon Concentrations in PM2.5-10 and PM2.5 Fractions by MABI Instrument in Two Urban Areas of Dakar, Senegal:: Science Publishing Group

Analysis of Black Carbon Concentrations in PM_2.5-10and PM_2.5 Fractions by MABI Instrument in Two Urban Areas of Dakar, Senegal

Alassane Traore¹, Moustapha Kebe¹, Malick Sow¹, Vasiliki Vasilatou², Ababacar Sadikhe Ndao¹, Konstantinos Eleftheriadis²

¹Faculty des Sciences et Techniques, University Cheikh Anta Diop Dakar, Dakar, Senegal

²Environmental Radioactivity & Aerosol technology for Atmospheric and Climate Impact N. C. S. R. Demokritos, Agia Paraskevi, Attiki, Greece

International Journal of Atmospheric and Oceanic Sciences, Volume 7, Issue 2, December 2023

Pages: 23-30

Received: Aug. 29, 2023

Accepted: Sep. 19, 2023

Published: Oct. 08, 2023

DOI: 10.11648/j.ijaos.20230702.11

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Abstract

Black carbon (BC) is a particular pollutant that absorbs visible light and can intervene in the climatic change with irradiance. The sources of BC emissions are known, such as incomplete combustion of fossil fuels and biomass burning. Our study focuses on two sites Hlm and Yoff in Dakar, Senegal in order to determine the mass absorption coefficient of BC in our polycarbonate nucleopore filters from November 2018 to October 2019 so as to collect PM_2.5and PM_2.5-10we face in our two study sites using MABI instrument. In addition, we investigate the source apportionment of black carbon in PM2.5 fraction. We observe that the mass absorption coefficient of PM_2.5is higher than that of PM_2.5-10. The average concentration of BC at Hlm and Yoff were 1.85 ± 0.37 and 2.69 ± 0.54 μg.m⁻³ respectively, whereas the average concentrations of BC_BB were 0.003 ± 0.0007 and 0.08 ± 0.01 μg.m⁻³, respectively and for BC_FFwere 1.85 ± 0.37 and 2.61 ± 0.53μg.m⁻³. The BC from at Yoff has two compounds with 2.97% of Biomass burning and 97, 03% of Fossil fuels in contrast to Hlm site the black carbon was mainly composed of fossil fuels in Dakar, the fossil fuels are mainly source of the black carbon.

Keywords

BC, BC_FF, BC_BB, PM, MABI

To cite this article

Alassane Traore, Moustapha Kebe, Malick Sow, Vasiliki Vasilatou, Ababacar Sadikhe Ndao, et al. (2023). Analysis of Black Carbon Concentrations in PM2.5-10 and PM2.5 Fractions by MABI Instrument in Two Urban Areas of Dakar, Senegal. International Journal of Atmospheric and Oceanic Sciences, 7(2), 23-30. https://doi.org/10.11648/j.ijaos.20230702.11

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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