Polycyclic aromatic hydrocarbons (PAHs) in road dust collected from Quang Ninh: Contamination levels and potential sources

Nguyen Thuy Ngoc, Truong Thi Kim, Phan Thi Lan Anh, Duong Hong Anh, Phung Thi Vi, Pham Hung Viet

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Published Mar 30, 2021
DOI: https://doi.org/10.25073/2588-1140/vnunst.5151

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NGOC, Nguyen Thuy et al. Polycyclic aromatic hydrocarbons (PAHs) in road dust collected from Quang Ninh: Contamination levels and potential sources. VNU Journal of Science: Natural Sciences and Technology, [S.l.], v. 37, n. 1, mar. 2021. ISSN 2588-1140. Available at: <https://js.vnu.edu.vn/NST/article/view/5151>. Date accessed: 18 dec. 2024. doi: https://doi.org/10.25073/2588-1140/vnunst.5151.
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Issue
Vol 37 No 1
Section
Original Articles

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Abstract

Twenty road dust samples were collected from Ha Long and Cam Pha cities in Quang Ninh province for analysis of polycyclic aromatic hydrocarbons (PAHs) on the USEPA priority pollutant list. Total concentrations of sixteen PAHs in road dust samples of Ha Long and Cam Pha ranged from 232 - 593 ng/g d.w (average: 399 ng/g d.w) and 297 - 1624 ng/g d.w (average: 780 ng/g d.w), respectively. Proportitions of invididiuals were decreased in the order Phe (21% ± 13%) > Pyr (12% ± 6%) > Nap~Fluth (11% ± 6%) > BbF (10% ± 8%), suggesting the similar composition of analyzed PAHs in road dust at two cities. Based on the common diagnostic ratios for the identification of PAHs emission sources, the Fluth/(Fluth+Pyr) ratio (average: 0.43, range: 0.29-0.60), the BaA/(BaA+Chr) ratio (average: 0.30, range: 0.08-0.38), the IcdP/(IcdP+BghiP) ratio (average: 0.30, range: 0.22-0.46) and the BaP/BghiP ratio (average: 0.47 < 0.9) indicated that emissions from traffic activities may be the important sources of PAHs in Quang Ninh.

Keywords: road dust, PAHs, GC/MS, Quang Ninh

References

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