首页|Impact of industrial and traffic changes on atmospheric dust and trace element deposition in Didouche Mourad, Algeria

Impact of industrial and traffic changes on atmospheric dust and trace element deposition in Didouche Mourad, Algeria

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Given the critical environmental and health implications of atmospheric deposition, this study examined thelong-term variations in atmospheric dust and trace element deposition in Didouche Mourad, Algeria, from 21/6/2002–20/6/2003 (P1) to 21/12/2017–20/12/2018 (P2), a period marked by significant industrial and infrastructuralchanges. Using a network of 10 sampling sites, we conducted two-year-long measurement campaignsto quantify the deposition rates of dust and seven trace elements (Pb, Mn, Cr, Ni, Cu, Co, and Cd). We used acombination of techniques, including spatiotemporal analysis and enrichment factor calculations, to understandhow local changes affect air quality. The results showed a substantial reduction in the average cross-sitedeposition rates between the two periods: dust (61 %), Co (98 %), Cd (97 %), Pb (90 %), Mn (76 %), Cu(62 %), Ni (51 %), and Cr (50 %). This improvement was attributed to specific interventions, including new roadconstruction and upgraded industrial filtration systems. Shifts in seasonal deposition patterns were observed,with elevated levels in summer and autumn during 2002–2003, changing to peaks in summer and winter in2017–2018. Four main pollution sources were identified through PCA for each period: agricultural activity (P1), soil dust (P2), Saharan dust (P1, P2), vehicular emissions (P1), cement plant (P2), and industrial processes (P1, P2). This study provides crucial insights into the long-term effectiveness of air quality management strategies in industrial areas and offers a model for assessing and mitigating atmospheric pollution in similar global settings. The comprehensive approach and extended timeframe of this study significantly contribute to our understanding of the complex dynamics of atmospheric deposition in evolving urban-industrial environments.

Dust deposition ratesSpatiotemporal depositionTrace metalsSource identificationPrincipal component analysis

Mokhtar Bouziane、Ahmed Terrouche、Lamri Naidja、Hocine Ali-Khodja、Zhongwei Huang

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Laboratory of Pollution and Water Treatment, Department of Chemistry, Faculty of Exact Sciences, University of Mentouri Brothers-Constantine 1, Constantine 25017,Algeria||Faculty of Technology-BP 166, Mohamed Boudief M’sila, 28000, Algeria

Laboratory of Pollution and Water Treatment, Department of Chemistry, Faculty of Exact Sciences, University of Mentouri Brothers-Constantine 1, Constantine 25017,Algeria||University Abb`es Laghrour Khenchela, BP 1252, Route de Batna, Khenchela 40004, Algeria

Laboratory of Pollution and Water Treatment, Department of Chemistry, Faculty of Exact Sciences, University of Mentouri Brothers-Constantine 1, Constantine 25017,Algeria||Centre de Recherche en Sciences Pharmaceutiques, Nouvelle Ville Ali Mendjli, Zone d’activit´es ZAM, Constantine, Algeria

Laboratory of Pollution and Water Treatment, Department of Chemistry, Faculty of Exact Sciences, University of Mentouri Brothers-Constantine 1, Constantine 25017,Algeria

Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, Gansu 730000, China

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2025

10.1016/j.jhazmat.2025.138014

Journal of hazardous materials

Journal of hazardous materials

SCI
ISSN：0304-3894
年,卷(期)：2025.492(Jul.15)