Separation and Tracing of Anthropogenic Magnetite Nanoparticles in the Urban Atmosphere
Citations Over TimeTop 12% of 2020 papers
Abstract
Nanosized magnetite is a highly toxic material due to its strong ability to generate reactive oxygen species in vivo, and the presence of magnetite NPs in the brain has been linked with aging and neurodegenerative diseases such as Alzheimer's disease. Recently, magnetite pollution nanoparticles (NPs) were found to be present in the human brain, heart, and blood, which raises great concerns about the health risks of airborne magnetite NPs. Here, we report the abundant presence and chemical multifingerprints (including high-resolution structural and elemental fingerprints) of magnetite NPs in the urban atmosphere. We establish a methodology for high-efficiency retrieving and accurate quantification of airborne magnetite NPs. We report the occurrence levels (annual mean concentration 75.5 ± 33.2 ng m-3 in Beijing with clear season variations) and the pollution characteristics of airborne magnetite NPs. Based on the chemical multifingerprints of the NPs, we identify and estimate the contributions of the major emission sources for airborne magnetite NPs. We also give an assessment of human exposure risks of airborne magnetite NPs. Our findings support the identification of airborne magnetite NPs as a threat to human health.
Related Papers
- → Multifunctional magnetite and silica–magnetite nanoparticles: Synthesis, surface activation and applications in life sciences(2005)215 cited
- → Separation and Tracing of Anthropogenic Magnetite Nanoparticles in the Urban Atmosphere(2020)80 cited
- → Removal of heavy metal cations by biogenic magnetite nanoparticles produced in Fe(III)-reducing microbial enrichment cultures(2013)60 cited
- New hybrid materials on the basis of magnetite and magnetite-gold nanoparticles for biomedical application(2016)
- → Synthesis, Characterization and Application of Chitosan Coated Magnetite Nanoparticles in Drug Delivery(2020)