Free radical activity associated with the surface of particles: a unifying factor in determining biological activity?
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Summertime oxidative potential of atmospheric PM<inf>2.5</inf> over New Delhi: Effect of aerosol ageing
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2022, Journal of Environmental Sciences (China)Citation Excerpt :We did not determine the content of organic chemicals due to the limitations on the filter samples, which may lose many of the volatile organic chemicals after storage. However, the different components such as transition metals (iron) and organic chemicals (polycyclic aromatic hydrocarbon, PAHs) on PM2.5 could increase the production of free radicals and cause oxidative stress in lung tissues (Donaldson et al., 1996). Another metal residue found at a significantly higher amount in the PM2.5 samples was chromium (Cr).
The diurnal characteristics of PM-bound ROS and its influencing factors at urban ambient and roadside environments
2020, Atmospheric ResearchCitation Excerpt :This PM-induced ROS were identified as potential terminators of cellular macromolecules (DNA, lipids and proteins.) leading to respiratory, cardiovascular and neurodegenerative diseases (Becker et al., 2005; Donaldson et al., 1996; Landreman et al., 2008; Li et al., 2009; Nel, 2005; Oberdörster et al., 2005). The different components of PM such as black carbon and oxygenated organic aerosols are noted to have different fates and pathways while interacting with human physiological systems after inhalation exposure based on its solubility (Eiguren-Fernandez et al., 2010; Pakbin et al., 2011).