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Magnetic nanoparticles: An indicator of health risks related to anthropogenic airborne particulate matter.
Kermenidou, M; Balcells, Ll; Martinez-Boubeta, C; Chatziavramidis, A; Konstantinidis, I; Samaras, T; Sarigiannis, D; Simeonidis, K.
Afiliação
  • Kermenidou M; Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
  • Balcells L; Institut de Ciència de Materials de Barcelona, CSIC, 08193 Bellaterra, Spain.
  • Martinez-Boubeta C; Ecoresources P.C., Giannitson-Santaroza Str. 15-17, 54627 Thessaloniki, Greece.
  • Chatziavramidis A; 2nd Academic Otorhinolaryngology Department, General Hospital Papageorgiou, Aristotle University of Thessaloniki, 56403 Thessaloniki, Greece.
  • Konstantinidis I; 2nd Academic Otorhinolaryngology Department, General Hospital Papageorgiou, Aristotle University of Thessaloniki, 56403 Thessaloniki, Greece.
  • Samaras T; Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
  • Sarigiannis D; Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
  • Simeonidis K; Ecoresources P.C., Giannitson-Santaroza Str. 15-17, 54627 Thessaloniki, Greece; Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece. Electronic address: ksime@physics.auth.gr.
Environ Pollut ; 271: 116309, 2021 Feb 15.
Article em En | MEDLINE | ID: mdl-33387781
ABSTRACT
Due to their small dimensions, airborne particles are able to penetrate through inhalation into many human organs, from the lungs to the cardiovascular system and the brain, which can threaten our health. This work establishes a novel approach of collecting quantitative data regarding the fraction, the composition and the size distribution of combustion-emitted particulate matter through the magnetic characterization and analysis of samples received by common air pollution monitoring. To this end, SQUID magnetometry measurements were carried out for samples from urban and suburban areas in Thessaloniki, the second largest city of Greece, taking into consideration the seasonal and weekly variation of airborne particles levels as determined by occurring traffic and meteorological conditions. The level of estimated magnetically-responding atmospheric particulate matter was at least 0.5 % wt. of the collected samples, mostly being present in the form of ultrafine particles with nuclei sizes of approximately 14 nm and their aggregates. The estimated quantities of magnetic particulate matter show maximum values during autumn months (0.8 % wt.) when increased commuting takes place, appearing higher in the city center by up to 50% than those in suburban areas. In combination with high-resolution transmission electron imaging and elemental analysis, it was found that Fe3O4 and similar ferrites, some of them attached to heavy metals (Co, Cr), are the dominant magnetic contributors arising from anthropogenic high-temperature processes, e.g. due to traffic emissions. Importantly, nasal cytologic samples collected from residents of both central and suburban areas showed same pattern in what concerns magnetic behavior, thus verifying the critical role of nanosized magnetic particles in the assessment of air pollution threats. Despite the inherent statistical limitations of our study, such findings also indicate the potential transmission of infectious pathogens by means of pollution-derived nanoparticles into the respiratory system of the human body.
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Texto completo: 1 Coleções: 01-internacional Contexto em Saúde: 2_ODS3 Base de dados: MEDLINE Assunto principal: Poluentes Atmosféricos / Poluição do Ar / Nanopartículas de Magnetita Tipo de estudo: Etiology_studies / Risk_factors_studies Limite: Humans País/Região como assunto: Europa Idioma: En Revista: Environ Pollut Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Contexto em Saúde: 2_ODS3 Base de dados: MEDLINE Assunto principal: Poluentes Atmosféricos / Poluição do Ar / Nanopartículas de Magnetita Tipo de estudo: Etiology_studies / Risk_factors_studies Limite: Humans País/Região como assunto: Europa Idioma: En Revista: Environ Pollut Ano de publicação: 2021 Tipo de documento: Article