Oxidative Potential of Metal-Containing Nanoparticles in Coal Fly Ash Generated from Coal-Fired Power Plants in China.

ABSTRACT: The overwhelming magnitude of coal-fired power plants has caused an inevitable release of metal-containing nanoparticles (MNPs) into the atmosphere, which may be inhaled into the respiratory system and cause oxidative stress. In this study, MNPs and oxidative potential (OP) were analyzed in <1 μm fractions of 56 coal fly ashes collected from Chinese CFPPs. The particle number concentrations (PNCs) of Fe- and Ti-containing NPs, as the dominant MNPs in CFAs, were in the range of 1.5 × 10⁹ to 9.4 × 10¹⁰ and 6.4 × 10⁸ to 4.1 × 10¹⁰ particles/mg, with average particle sizes of 87 and 89 nm, respectively. Average OP values of <1 μm fractions were 1.4-2.2 nmol AA min^-1 μg^-1 for three simulated lung fluids, which were 2-3 orders of

SUBMITTER: Xu M 

PROVIDER: S-EPMC11504612 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature