A Characterization and Cell Toxicity Assessment of Particulate Pollutants from Road Traffic Sites in Kano State, Nigeria - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Atmosphere Année : 2022

A Characterization and Cell Toxicity Assessment of Particulate Pollutants from Road Traffic Sites in Kano State, Nigeria

Aishatu Sadiq
  • Fonction : Auteur
Adina-Nicoleta Lazar
  • Fonction : Auteur
Imam Bello
  • Fonction : Auteur
Samson Salam
  • Fonction : Auteur
Aisha Faruk
  • Fonction : Auteur
Mitchell Alao
Mickaël Catinon
  • Fonction : Auteur
  • PersonId : 922934
Michel Vincent
  • Fonction : Auteur

Résumé

Emerging African countries are characterized by explosive population growth and urbanization, which threaten environmental sustainability. This study comparatively characterized ambient aerosols and assessed cytotoxicity to facilitate improving health and environmental policy. Twenty-four air samples were collected at high and low-density traffic sites in Kano State using polysulfone and stainless steel filters attached to an automated pump. The physico-chemical properties of particulate matter were determined using scanning electron microscopy and energy dispersive X-ray analysis (SEM-EDX). In vitro, their potential toxicity was assessed using macrophages and cell fixation with staining. Results showed 51.7% of particles as PM2.5, with the highest particle concentration in mixed sites (urban and industrial). Particle classification into four groups by elemental composition and structure showed: sand particles (Si, Al, Fe, Ca, Mg, K, Na, Mo, Sr, Zr) 30–51%; other fibers 0–3%; other particles (Si, Fe, S, Mo, Zn, and other metals) 22–40%; and silicone-based fibres 23–34%. The abundant elements are: Si, Al, Ca, Ce, Ti, Fe, Cl, Pb, and Mn. The lowest viability on cytotoxicity assessment was recorded in mixed site M2. The majority of households were located within 50 m of air sampling sites. Proximity to traffic sites worsens health, as evidenced in cytotoxicity findings. We recommend improved urban planning and intensification of emissions control.

Dates et versions

hal-03767453 , version 1 (01-09-2022)

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Citer

Aishatu Sadiq, Salah Khardi, Adina-Nicoleta Lazar, Imam Bello, Samson Salam, et al.. A Characterization and Cell Toxicity Assessment of Particulate Pollutants from Road Traffic Sites in Kano State, Nigeria. Atmosphere, 2022, 13 (1), pp.80. ⟨10.3390/atmos13010080⟩. ⟨hal-03767453⟩
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