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Published: 2024-06-03
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DOI: https://doi.org/10.53747/nst.v13i4.450
Issue
Vol. 13 No. 4 (2023)
Section
Articles
How to Cite
Vuong, T. B., Ha , L. A., Mai , D. K., & Nguyen , H. T. . (2024). Characteristics of fine dust pollution PM₂.₅ in Hanoi in 2021. Nuclear Science and Technology, 13(4), 1-10. https://doi.org/10.53747/nst.v13i4.450

Characteristics of fine dust pollution PM₂.₅ in Hanoi in 2021

Thu Bac Vuong1, Ha Lan Anh2, Mai Dinh Kien2, Nguyen Huyen Trang 2
1 INST_VINATOM
2 Institute for Nuclear Science & Technique (INST)

Main Article Content

Abstract

Fine particulate matter (PM2.5) is one of the most dangerous pollutions in the atmosphere in the Hanoi capital. PM2.5 fine dust pollution characteristics in Hanoi in the duration from 5/2021 to 3/2022 have been studied. The concentration of main chemical elements (such as As, Br, Ca, Cd, Ce, Cl, Cu, Fe, K, Mn, Pb, S, Sr, Ti, Zn, Zr…), main water-soluble ions (such as Na+, NH4+, K+, Mg2+, Ca2+, SO42-, Cl-, NO3-, F-, NO2-) and black carbon (BC) in the PM2.5 sample have been analyzed. The average PM2.5 fine dust concentration was (78.09 ± 51.71) µg/m3 and ranged from 17.55 to 271.39 µg/m3. PM2.5 tends to increase and is about 3.12 times larger than Who Air Quality Guidelines 2005 (25 µg/m3 for PM2.5 24h). The average PM2.5 concentration in the rainy season from 5/2021 to 9/2021 was (51.97 ± 16.40) µg/m3. This value for the dry season from 10/2021 to 3/2022 was (104.70 ± 61.19) µg/m3. It is much higher than that in the rainy season about 2.01 times. The major contributors were the secondary components such as NH4+, SO42-, NO3- and BC... The main pollution contribution sources and the potential pollution areas map have been identified. This research shows a worrying picture of fine dust PM2.5 in Hanoi in the studying duration.

Article Details

Author Biographies

Ha Lan Anh, Institute for Nuclear Science & Technique (INST)

179 Hoang Quoc Viet, Nghia Do, Cau Giay, Ha Noi

Mai Dinh Kien, Institute for Nuclear Science & Technique (INST)

179 Hoang Quoc Viet, Nghia Do, Cau Giay, Ha Noi

Nguyen Huyen Trang , Institute for Nuclear Science & Technique (INST)

179 Hoang Quoc Viet, Nghia Do, Cau Giay, Ha Noi

Keywords

PM2.5 fine dust in Hanoi 2021, major chemical elements and ions concentrations, main pollution sources, PSCF maps

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