2023
Is the oxidative potential of components of fine particulate matter surface-mediated?
BAUMANN, Karsten; Marco WIETZORECK; Pourya SHAHPOURY; Alexander FILIPPI; Stefanie HILDMANN et al.Základní údaje
Originální název
Is the oxidative potential of components of fine particulate matter surface-mediated?
Autoři
BAUMANN, Karsten; Marco WIETZORECK; Pourya SHAHPOURY; Alexander FILIPPI; Stefanie HILDMANN; Steven LELIEVELD; Thomas BERKEMEIER; Haijie TONG; Ulrich POESCHL a Gerhard LAMMEL
Vydání
Environmental Science and Pollution Research, HEIDELBERG (GERMANY), Springer, 2023, 0944-1344
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.800 v roce 2022
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/23:00132201
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Aerosol; Inhalation; Toxic quinones; Alveolar surfactant; Acellular assay
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 8. 11. 2023 20:03, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
Redox-active substances in fine particulate matter (PM) contribute to inhalation health risks through their potential to generate reactive oxygen species in epithelial lung lining fluid (ELF). The ELF's air-liquid interface (ALI) can play an important role in the phase transfer and multi-phase reactions of redox-active PM constituents. We investigated the influence of interfacial processes and properties by scrubbing of coated nano-particles with simulated ELF in a nebulizing mist chamber. Weakly water-soluble redox-active organics abundant in ambient fine PM were reproducibly loaded into ELF via ALI mixing. The resulting oxidative potential (OP) of selected quinones and other PAH derivatives were found to exceed the OP resulting from bulk mixing of the same amounts of redox-active substances and ELF. Our results indicate that the OP of PM components depends not only on the PM substance properties but also on the ELF interface properties and uptake mechanisms. OP measurements based on bulk mixing of phases may not represent the effective OP in the human lung.